pucch_nr.c 91.2 KB
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/*
 * Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The OpenAirInterface Software Alliance licenses this file to You under
 * the OAI Public License, Version 1.1  (the "License"); you may not use this file
 * except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.openairinterface.org/?page_id=698
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *-------------------------------------------------------------------------------
 * For more information about the OpenAirInterface (OAI) Software Alliance:
 *      contact@openairinterface.org
 */

/*! \file PHY/NR_UE_TRANSPORT/pucch_nr.c
* \brief Top-level routines for generating and decoding the PUCCH physical channel
* \author A. Mico Pereperez
* \date 2018
* \version 0.1
* \company Eurecom
* \email: 
* \note
* \warning
*/
//#include "PHY/defs.h"
#include "PHY/impl_defs_nr.h"
#include "PHY/defs_nr_common.h"
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#include "PHY/defs_nr_UE.h"
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//#include "PHY/extern.h" 
//#include "LAYER2/MAC/extern.h"
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#include "PHY/NR_UE_TRANSPORT/pucch_nr.h"
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#include "PHY/NR_UE_TRANSPORT/nr_transport_proto_ue.h"
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#include "common/utils/LOG/log.h"
#include "common/utils/LOG/vcd_signal_dumper.h"
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#include "T.h"
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#ifdef NR_UNIT_TEST
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  #define DEBUG_PUCCH_TX
  #define DEBUG_NR_PUCCH_TX
#endif
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//#define ONE_OVER_SQRT2 23170 // 32767/sqrt(2) = 23170 (ONE_OVER_SQRT2)
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void nr_group_sequence_hopping (//pucch_GroupHopping_t ue->pucch_config_common_nr.puch_GroupHopping,
                                //uint8_t PUCCH_GroupHopping,
                                PHY_VARS_NR_UE *ue,
                                //uint32_t n_id,
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                                uint8_t n_hop,
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                                int nr_tti_tx,
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                                uint8_t *u,
                                uint8_t *v) {
/*
 * Implements TS 38.211 subclause 6.3.2.2.1 Group and sequence hopping
 * The following variables are set by higher layers:
 *    - PUCCH_GroupHopping:
 *    - n_id: higher-layer parameter hoppingId
 *    - n_hop: frequency hopping index
 *             if intra-slot frequency hopping is disabled by the higher-layer parameter PUCCH-frequency-hopping
 *                n_hop=0
 *             if frequency hopping is enabled by the higher-layer parameter PUCCH-frequency-hopping
 *                n_hop=0 for the first hop
 *                n_hop=1 for the second hop
 */
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  // depending on the value of the PUCCH_GroupHopping, we will obtain different values for u,v
  pucch_GroupHopping_t PUCCH_GroupHopping = ue->pucch_config_common_nr->pucch_GroupHopping; // from higher layers FIXME!!!
  // n_id defined as per TS 38.211 subclause 6.3.2.2.1 (is given by the higher-layer parameter hoppingId)
  // it is hoppingId from PUCCH-ConfigCommon:
  // Cell-Specific scrambling ID for group hoppping and sequence hopping if enabled
  // Corresponds to L1 parameter 'HoppingID' (see 38.211, section 6.3.2.2) BIT STRING (SIZE (10))
  uint16_t n_id = ue->pucch_config_common_nr->hoppingId; // from higher layers FIXME!!!


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  #ifdef DEBUG_NR_PUCCH_TX
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    // initialization to be removed
    PUCCH_GroupHopping=neither;
    n_id=10;
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    printf("\t\t [nr_group_sequence_hopping] initialization PUCCH_GroupHopping=%d, n_id=%d -> variable initializations TO BE REMOVED\n",PUCCH_GroupHopping,n_id);
  #endif
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  uint8_t f_ss=0,f_gh=0;
  *u=0;
  *v=0;
  uint32_t c_init = (1<<5)*floor(n_id/30)+(n_id%30); // we initialize c_init to calculate u,v
  uint32_t x1,s = lte_gold_generic(&x1, &c_init, 1); // TS 38.211 Subclause 5.2.1
  #ifdef DEBUG_NR_PUCCH_TX
    printf("\t\t [nr_group_sequence_hopping] calculating u,v -> ");
  #endif

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  if (PUCCH_GroupHopping == neither){ // PUCCH_GroupHopping 'neither'
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    f_ss = n_id%30;
  }
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  if (PUCCH_GroupHopping == enable){ // PUCCH_GroupHopping 'enabled'
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    for (int m=0; m<8; m++){
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      f_gh = f_gh + ((1<<m)*((uint8_t)((s>>(8*(2*nr_tti_tx+n_hop)+m))&1))); // Not sure we have to use nr_tti_tx FIXME!!!
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    }
    f_gh = f_gh%30;
    f_ss = n_id%30;
  }
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  if (PUCCH_GroupHopping == disable){ // PUCCH_GroupHopping 'disabled'
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    f_ss = n_id%30;
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    *v = (uint8_t)((s>>(2*nr_tti_tx+n_hop))&1); // Not sure we have to use nr_tti_tx FIXME!!!
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  }
  *u = (f_gh+f_ss)%30;
  #ifdef DEBUG_NR_PUCCH_TX
    printf("%d,%d\n",*u,*v);
  #endif
}
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double nr_cyclic_shift_hopping(PHY_VARS_NR_UE *ue,
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                               uint8_t m0,
                               uint8_t mcs,
                               uint8_t lnormal,
                               uint8_t lprime,
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                               int nr_tti_tx) {
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/*
 * Implements TS 38.211 subclause 6.3.2.2.2 Cyclic shift hopping
 *     - n_id: higher-layer parameter hoppingId
 *     - m0: provided by higher layer parameter PUCCH-F0-F1-initial-cyclic-shift of PUCCH-F0-resource-config
 *     - mcs: mcs=0 except for PUCCH format 0 when it depends on information to be transmitted according to TS 38.213 subclause 9.2
 *     - lnormal: lnormal is the OFDM symbol number in the PUCCH transmission where l=0 corresponds to the first OFDM symbol of the PUCCH transmission
 *     - lprime: lprime is the index of the OFDM symbol in the slot that corresponds to the first OFDM symbol of the PUCCH transmission in the slot given by [5, TS 38.213]
 */
  // alpha_init initialized to 2*PI/12=0.5235987756
  double alpha = 0.5235987756;
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  uint32_t c_init = ue->pucch_config_common_nr->hoppingId; // we initialize c_init again to calculate n_cs
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  #ifdef DEBUG_NR_PUCCH_TX
    // initialization to be removed
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    c_init=10;
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    printf("\t\t [nr_cyclic_shift_hopping] initialization c_init=%d -> variable initialization TO BE REMOVED\n",c_init);
  #endif
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  uint32_t x1,s = lte_gold_generic(&x1, &c_init, 1); // TS 38.211 Subclause 5.2.1
  uint8_t n_cs=0;
  #ifdef DEBUG_NR_PUCCH_TX
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    printf("\t\t [nr_cyclic_shift_hopping] calculating alpha (cyclic shift) using c_init=%d -> ",c_init);
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  #endif
  for (int m=0; m<8; m++){
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    // calculating n_cs (Not sure we have to use nr_tti_tx FIXME!!!)
    n_cs = n_cs+((1<<m)*((uint8_t)((s>>((14*8*nr_tti_tx) + 8*(lnormal+lprime) + m))&1)));
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  }
  alpha = (alpha * (double)((m0+mcs+n_cs)%12));
  #ifdef DEBUG_NR_PUCCH_TX
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    printf("n_cs=%d -> %lf\n",n_cs,alpha);
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  #endif
  return(alpha);
}
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void nr_generate_pucch0(PHY_VARS_NR_UE *ue,
                        int32_t **txdataF,
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                        NR_DL_FRAME_PARMS *frame_parms,
                        PUCCH_CONFIG_DEDICATED *pucch_config_dedicated,
                        int16_t amp,
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                        int nr_tti_tx,
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                        uint8_t m0,
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                        uint8_t mcs,
                        uint8_t nrofSymbols,
                        uint8_t startingSymbolIndex,
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                        uint16_t startingPRB) {
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  #ifdef DEBUG_NR_PUCCH_TX
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    printf("\t [nr_generate_pucch0] start function at slot(nr_tti_tx)=%d\n",nr_tti_tx);
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  #endif

  /*
   * Implement TS 38.211 Subclause 6.3.2.3.1 Sequence generation
   *
   */
  #ifdef DEBUG_NR_PUCCH_TX
    printf("\t [nr_generate_pucch0] sequence generation\n");
  #endif

  /*
   * Defining cyclic shift hopping TS 38.211 Subclause 6.3.2.2.2
   */
  // alpha is cyclic shift
  double alpha;
  // lnormal is the OFDM symbol number in the PUCCH transmission where l=0 corresponds to the first OFDM symbol of the PUCCH transmission
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  //uint8_t lnormal;
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  // lprime is the index of the OFDM symbol in the slot that corresponds to the first OFDM symbol of the PUCCH transmission in the slot given by [5, TS 38.213]
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  //uint8_t lprime;
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  // mcs is provided by TC 38.213 subclauses 9.2.3, 9.2.4, 9.2.5 FIXME!
  //uint8_t mcs;

  /*
   * in TS 38.213 Subclause 9.2.1 it is said that:
   * for PUCCH format 0 or PUCCH format 1, the index of the cyclic shift
   * is indicated by higher layer parameter PUCCH-F0-F1-initial-cyclic-shift
   */

  /*
   * Implementing TS 38.211 Subclause 6.3.2.3.1, the sequence x(n) shall be generated according to:
   * x(l*12+n) = r_u_v_alpha_delta(n)
   */
  // the value of u,v (delta always 0 for PUCCH) has to be calculated according to TS 38.211 Subclause 6.3.2.2.1
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  uint8_t u=0,v=0;//,delta=0;
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  // if frequency hopping is disabled by the higher-layer parameter PUCCH-frequency-hopping
  //              n_hop = 0
  // if frequency hopping is enabled by the higher-layer parameter PUCCH-frequency-hopping
  //              n_hop = 0 for first hop
  //              n_hop = 1 for second hop
  uint8_t n_hop = 0;
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  //uint8_t PUCCH_Frequency_Hopping; // from higher layers FIXME!!
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#ifdef DEBUG_NR_PUCCH_TX
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    printf("\t [nr_generate_pucch0] sequence generation: variable initialization for test\n");
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#endif
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  // x_n contains the sequence r_u_v_alpha_delta(n)
  int16_t x_n_re[24],x_n_im[24];
  // we proceed to calculate alpha according to TS 38.211 Subclause 6.3.2.2.2
  for (int l=0; l<nrofSymbols; l++){
    // if frequency hopping is enabled n_hop = 1 for second hop. Not sure frequency hopping concerns format 0. FIXME!!!
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    // if ((PUCCH_Frequency_Hopping == 1)&&(l == (nrofSymbols-1))) n_hop = 1;
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    nr_group_sequence_hopping(ue,n_hop,nr_tti_tx,&u,&v); // calculating u and v value
    alpha = nr_cyclic_shift_hopping(ue,m0,mcs,l,startingSymbolIndex,nr_tti_tx);
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    #ifdef DEBUG_NR_PUCCH_TX
      printf("\t [nr_generate_pucch0] sequence generation \tu=%d \tv=%d \talpha=%lf \t(for symbol l=%d)\n",u,v,alpha,l);
    #endif
    for (int n=0; n<12; n++){
      x_n_re[(12*l)+n] = (int16_t)(((((int32_t)(round(32767*cos(alpha*n))) * table_5_2_2_2_2_Re[u][n])>>15)
                                  - (((int32_t)(round(32767*sin(alpha*n))) * table_5_2_2_2_2_Im[u][n])>>15))); // Re part of base sequence shifted by alpha
      x_n_im[(12*l)+n] = (int16_t)(((((int32_t)(round(32767*cos(alpha*n))) * table_5_2_2_2_2_Im[u][n])>>15)
                                  + (((int32_t)(round(32767*sin(alpha*n))) * table_5_2_2_2_2_Re[u][n])>>15))); // Im part of base sequence shifted by alpha
      #ifdef DEBUG_NR_PUCCH_TX
        printf("\t [nr_generate_pucch0] sequence generation \tu=%d \tv=%d \talpha=%lf \tx_n(l=%d,n=%d)=(%d,%d)\n",
                u,v,alpha,l,n,x_n_re[(12*l)+n],x_n_im[(12*l)+n]);
      #endif
    }
  }
  /*
   * Implementing TS 38.211 Subclause 6.3.2.3.2 Mapping to physical resources FIXME!
   */
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  //int32_t *txptr;
  uint32_t re_offset=0;
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  for (int l=0; l<nrofSymbols; l++) {
    if ((startingPRB <  (frame_parms->N_RB_DL>>1)) && ((frame_parms->N_RB_DL & 1) == 0)) { // if number RBs in bandwidth is even and current PRB is lower band
      re_offset = ((l+startingSymbolIndex)*frame_parms->ofdm_symbol_size) + (12*startingPRB) + frame_parms->first_carrier_offset;
    }
    if ((startingPRB >= (frame_parms->N_RB_DL>>1)) && ((frame_parms->N_RB_DL & 1) == 0)) { // if number RBs in bandwidth is even and current PRB is upper band
      re_offset = ((l+startingSymbolIndex)*frame_parms->ofdm_symbol_size) + (12*(startingPRB-(frame_parms->N_RB_DL>>1)));
    }
    if ((startingPRB <  (frame_parms->N_RB_DL>>1)) && ((frame_parms->N_RB_DL & 1) == 1)) { // if number RBs in bandwidth is odd  and current PRB is lower band
      re_offset = ((l+startingSymbolIndex)*frame_parms->ofdm_symbol_size) + (12*startingPRB) + frame_parms->first_carrier_offset;
    }
    if ((startingPRB >  (frame_parms->N_RB_DL>>1)) && ((frame_parms->N_RB_DL & 1) == 1)) { // if number RBs in bandwidth is odd  and current PRB is upper band
      re_offset = ((l+startingSymbolIndex)*frame_parms->ofdm_symbol_size) + (12*(startingPRB-(frame_parms->N_RB_DL>>1))) + 6;
    }
    if ((startingPRB == (frame_parms->N_RB_DL>>1)) && ((frame_parms->N_RB_DL & 1) == 1)) { // if number RBs in bandwidth is odd  and current PRB contains DC
      re_offset = ((l+startingSymbolIndex)*frame_parms->ofdm_symbol_size) + (12*startingPRB) + frame_parms->first_carrier_offset;
    }
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    //txptr = &txdataF[0][re_offset];
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    for (int n=0; n<12; n++){
      if ((n==6) && (startingPRB == (frame_parms->N_RB_DL>>1)) && ((frame_parms->N_RB_DL & 1) == 1)) {
        // if number RBs in bandwidth is odd  and current PRB contains DC, we need to recalculate the offset when n=6 (for second half PRB)
        re_offset = ((l+startingSymbolIndex)*frame_parms->ofdm_symbol_size);
      }
      ((int16_t *)&txdataF[0][re_offset])[0] = (int16_t)(((int32_t)(amp) * x_n_re[(12*l)+n])>>15);
      ((int16_t *)&txdataF[0][re_offset])[1] = (int16_t)(((int32_t)(amp) * x_n_im[(12*l)+n])>>15);
      //((int16_t *)txptr[0][re_offset])[0] = (int16_t)((int32_t)amp * x_n_re[(12*l)+n])>>15;
      //((int16_t *)txptr[0][re_offset])[1] = (int16_t)((int32_t)amp * x_n_im[(12*l)+n])>>15;
      //txptr[re_offset] = (x_n_re[(12*l)+n]<<16) + x_n_im[(12*l)+n];
      #ifdef DEBUG_NR_PUCCH_TX
        printf("\t [nr_generate_pucch0] mapping to RE \t amp=%d \tofdm_symbol_size=%d \tN_RB_DL=%d \tfirst_carrier_offset=%d \ttxptr(%d)=(x_n(l=%d,n=%d)=(%d,%d))\n",
                amp,frame_parms->ofdm_symbol_size,frame_parms->N_RB_DL,frame_parms->first_carrier_offset,re_offset,
                l,n,((int16_t *)&txdataF[0][re_offset])[0],((int16_t *)&txdataF[0][re_offset])[1]);
      #endif
      re_offset++;
    }
  }
}
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void nr_generate_pucch1(PHY_VARS_NR_UE *ue,
                        int32_t **txdataF,
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                        NR_DL_FRAME_PARMS *frame_parms,
                        PUCCH_CONFIG_DEDICATED *pucch_config_dedicated,
                        uint64_t payload,
                        int16_t amp,
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                        int nr_tti_tx,
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                        uint8_t m0,
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                        uint8_t nrofSymbols,
                        uint8_t startingSymbolIndex,
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                        uint16_t startingPRB,
                        uint16_t startingPRB_intraSlotHopping,
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                        uint8_t timeDomainOCC,
                        uint8_t nr_bit) {
#ifdef DEBUG_NR_PUCCH_TX
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  printf("\t [nr_generate_pucch1] start function at slot(nr_tti_tx)=%d payload=%d m0=%d nrofSymbols=%d startingSymbolIndex=%d startingPRB=%d startingPRB_intraSlotHopping=%d timeDomainOCC=%d nr_bit=%d\n",
          nr_tti_tx,payload,m0,nrofSymbols,startingSymbolIndex,startingPRB,startingPRB_intraSlotHopping,timeDomainOCC,nr_bit);
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#endif

  /*
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   * Implement TS 38.211 Subclause 6.3.2.4.1 Sequence modulation
   *
   */
  // complex-valued symbol d_re, d_im containing complex-valued symbol d(0):
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  int16_t d_re=0, d_im=0;
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  if (nr_bit == 1) { // using BPSK if M_bit=1 according to TC 38.211 Subclause 5.1.2
    d_re = (payload&1)==0 ? (int16_t)(((int32_t)amp*ONE_OVER_SQRT2)>>15) : -(int16_t)(((int32_t)amp*ONE_OVER_SQRT2)>>15);
    d_im = (payload&1)==0 ? (int16_t)(((int32_t)amp*ONE_OVER_SQRT2)>>15) : -(int16_t)(((int32_t)amp*ONE_OVER_SQRT2)>>15);
  }
  if (nr_bit == 2) { // using QPSK if M_bit=2 according to TC 38.211 Subclause 5.1.2
    if (((payload&1)==0) && (((payload>>1)&1)==0)) {
      d_re =  (int16_t)(((int32_t)amp*ONE_OVER_SQRT2)>>15); // 32767/sqrt(2) = 23170 (ONE_OVER_SQRT2)
      d_im =  (int16_t)(((int32_t)amp*ONE_OVER_SQRT2)>>15);
    }
    if (((payload&1)==0) && (((payload>>1)&1)==1)) {
      d_re =  (int16_t)(((int32_t)amp*ONE_OVER_SQRT2)>>15);
      d_im = -(int16_t)(((int32_t)amp*ONE_OVER_SQRT2)>>15);
    }
    if (((payload&1)==1) && (((payload>>1)&1)==0)) {
      d_re = -(int16_t)(((int32_t)amp*ONE_OVER_SQRT2)>>15);
      d_im =  (int16_t)(((int32_t)amp*ONE_OVER_SQRT2)>>15);
    }
    if (((payload&1)==1) && (((payload>>1)&1)==1)) {
      d_re = -(int16_t)(((int32_t)amp*ONE_OVER_SQRT2)>>15);
      d_im = -(int16_t)(((int32_t)amp*ONE_OVER_SQRT2)>>15);
    }
  }
  #ifdef DEBUG_NR_PUCCH_TX
    printf("\t [nr_generate_pucch1] sequence modulation: payload=%x \tde_re=%d \tde_im=%d\n",payload,d_re,d_im);
  #endif

  /*
   * Defining cyclic shift hopping TS 38.211 Subclause 6.3.2.2.2
   */
  // alpha is cyclic shift
  double alpha;
  // lnormal is the OFDM symbol number in the PUCCH transmission where l=0 corresponds to the first OFDM symbol of the PUCCH transmission
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  //uint8_t lnormal = 0 ;
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  // lprime is the index of the OFDM symbol in the slot that corresponds to the first OFDM symbol of the PUCCH transmission in the slot given by [5, TS 38.213]
  uint8_t lprime = startingSymbolIndex;
  // mcs = 0 except for PUCCH format 0
  uint8_t mcs=0;
  // r_u_v_alpha_delta_re and r_u_v_alpha_delta_im tables containing the sequence y(n) for the PUCCH, when they are multiplied by d(0)
  // r_u_v_alpha_delta_dmrs_re and r_u_v_alpha_delta_dmrs_im tables containing the sequence for the DM-RS.
  int16_t r_u_v_alpha_delta_re[12],r_u_v_alpha_delta_im[12],r_u_v_alpha_delta_dmrs_re[12],r_u_v_alpha_delta_dmrs_im[12];
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  /*
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   * in TS 38.213 Subclause 9.2.1 it is said that:
   * for PUCCH format 0 or PUCCH format 1, the index of the cyclic shift
   * is indicated by higher layer parameter PUCCH-F0-F1-initial-cyclic-shift
   */

  /*
   * the complex-valued symbol d_0 shall be multiplied with a sequence r_u_v_alpha_delta(n): y(n) = d_0 * r_u_v_alpha_delta(n)
   */
  // the value of u,v (delta always 0 for PUCCH) has to be calculated according to TS 38.211 Subclause 6.3.2.2.1
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  uint8_t u=0,v=0;//,delta=0;
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  // if frequency hopping is disabled, intraSlotFrequencyHopping is not provided
  //              n_hop = 0
  // if frequency hopping is enabled,  intraSlotFrequencyHopping is     provided
  //              n_hop = 0 for first hop
  //              n_hop = 1 for second hop
  uint8_t n_hop = 0;
  // Intra-slot frequency hopping shall be assumed when the higher-layer parameter intraSlotFrequencyHopping is provided,
  // regardless of whether the frequency-hop distance is zero or not,
  // otherwise no intra-slot frequency hopping shall be assumed
  //uint8_t PUCCH_Frequency_Hopping = 0 ; // from higher layers
  uint8_t intraSlotFrequencyHopping = 0;
  if (startingPRB != startingPRB_intraSlotHopping){
    intraSlotFrequencyHopping=1;
  }
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#ifdef DEBUG_NR_PUCCH_TX
  printf("\t [nr_generate_pucch1] intraSlotFrequencyHopping = %d \n",intraSlotFrequencyHopping);
#endif
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/*
 * Implementing TS 38.211 Subclause 6.3.2.4.2 Mapping to physical resources
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 */
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  //int32_t *txptr;
  uint32_t re_offset=0;
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  int i=0;
  #define MAX_SIZE_Z 168 // this value has to be calculated from mprime*12*table_6_3_2_4_1_1_N_SF_mprime_PUCCH_1_noHop[pucch_symbol_length]+m*12+n
  int16_t z_re[MAX_SIZE_Z],z_im[MAX_SIZE_Z];
  int16_t z_dmrs_re[MAX_SIZE_Z],z_dmrs_im[MAX_SIZE_Z];

  for (int l=0; l<nrofSymbols; l++) {
    #ifdef DEBUG_NR_PUCCH_TX
      printf("\t [nr_generate_pucch1] for symbol l=%d, lprime=%d\n",
              l,lprime);
    #endif
    // y_n contains the complex value d multiplied by the sequence r_u_v
    int16_t y_n_re[12],y_n_im[12];
    if ((intraSlotFrequencyHopping == 1) && (l >= (int)floor(nrofSymbols/2))) n_hop = 1; // n_hop = 1 for second hop
    #ifdef DEBUG_NR_PUCCH_TX
      printf("\t [nr_generate_pucch1] entering function nr_group_sequence_hopping with n_hop=%d, nr_tti_tx=%d\n",
              n_hop,nr_tti_tx);
    #endif
    nr_group_sequence_hopping(ue,n_hop,nr_tti_tx,&u,&v); // calculating u and v value
    alpha = nr_cyclic_shift_hopping(ue,m0,mcs,l,lprime,nr_tti_tx);
    for (int n=0; n<12; n++){
      r_u_v_alpha_delta_re[n] = (int16_t)(((((int32_t)(round(32767*cos(alpha*n))) * table_5_2_2_2_2_Re[u][n])>>15)
                                         - (((int32_t)(round(32767*sin(alpha*n))) * table_5_2_2_2_2_Im[u][n])>>15))); // Re part of base sequence shifted by alpha
      r_u_v_alpha_delta_im[n] = (int16_t)(((((int32_t)(round(32767*cos(alpha*n))) * table_5_2_2_2_2_Im[u][n])>>15)
                                         + (((int32_t)(round(32767*sin(alpha*n))) * table_5_2_2_2_2_Re[u][n])>>15))); // Im part of base sequence shifted by alpha
      r_u_v_alpha_delta_dmrs_re[n] = (int16_t)(((((int32_t)(round(32767*cos(alpha*n))) * table_5_2_2_2_2_Re[u][n])>>15)
                                              - (((int32_t)(round(32767*sin(alpha*n))) * table_5_2_2_2_2_Im[u][n])>>15))); // Re part of DMRS base sequence shifted by alpha
      r_u_v_alpha_delta_dmrs_im[n] = (int16_t)(((((int32_t)(round(32767*cos(alpha*n))) * table_5_2_2_2_2_Im[u][n])>>15)
                                              + (((int32_t)(round(32767*sin(alpha*n))) * table_5_2_2_2_2_Re[u][n])>>15))); // Im part of DMRS base sequence shifted by alpha
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      r_u_v_alpha_delta_dmrs_re[n] = (int16_t)(((int32_t)(amp*r_u_v_alpha_delta_dmrs_re[n]))>>15);
      r_u_v_alpha_delta_dmrs_im[n] = (int16_t)(((int32_t)(amp*r_u_v_alpha_delta_dmrs_im[n]))>>15);
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      // PUCCH sequence = DM-RS sequence multiplied by d(0)
      y_n_re[n]               = (int16_t)(((((int32_t)(r_u_v_alpha_delta_re[n])*d_re)>>15)
                                         - (((int32_t)(r_u_v_alpha_delta_im[n])*d_im)>>15))); // Re part of y(n)
      y_n_im[n]               = (int16_t)(((((int32_t)(r_u_v_alpha_delta_re[n])*d_im)>>15)
                                         + (((int32_t)(r_u_v_alpha_delta_im[n])*d_re)>>15))); // Im part of y(n)
      #ifdef DEBUG_NR_PUCCH_TX
        printf("\t [nr_generate_pucch1] sequence generation \tu=%d \tv=%d \talpha=%lf \tr_u_v_alpha_delta[n=%d]=(%d,%d) \ty_n[n=%d]=(%d,%d)\n",
            u,v,alpha,n,r_u_v_alpha_delta_re[n],r_u_v_alpha_delta_im[n],n,y_n_re[n],y_n_im[n]);
      #endif
    }
    /*
     * The block of complex-valued symbols y(n) shall be block-wise spread with the orthogonal sequence wi(m)
     * (defined in table_6_3_2_4_1_2_Wi_Re and table_6_3_2_4_1_2_Wi_Im)
     * z(mprime*12*table_6_3_2_4_1_1_N_SF_mprime_PUCCH_1_noHop[pucch_symbol_length]+m*12+n)=wi(m)*y(n)
     *
     * The block of complex-valued symbols r_u_v_alpha_dmrs_delta(n) for DM-RS shall be block-wise spread with the orthogonal sequence wi(m)
     * (defined in table_6_3_2_4_1_2_Wi_Re and table_6_3_2_4_1_2_Wi_Im)
     * z(mprime*12*table_6_4_1_3_1_1_1_N_SF_mprime_PUCCH_1_noHop[pucch_symbol_length]+m*12+n)=wi(m)*y(n)
     *
     */
    // the orthogonal sequence index for wi(m) defined in TS 38.213 Subclause 9.2.1
    // the index of the orthogonal cover code is from a set determined as described in [4, TS 38.211]
    // and is indicated by higher layer parameter PUCCH-F1-time-domain-OCC
    // In the PUCCH_Config IE, the PUCCH-format1, timeDomainOCC field
    uint8_t w_index = timeDomainOCC;
    // N_SF_mprime_PUCCH_1 contains N_SF_mprime from table 6.3.2.4.1-1   (depending on number of PUCCH symbols nrofSymbols, mprime and intra-slot hopping enabled/disabled)
    uint8_t N_SF_mprime_PUCCH_1;
    // N_SF_mprime_PUCCH_1 contains N_SF_mprime from table 6.4.1.3.1.1-1 (depending on number of PUCCH symbols nrofSymbols, mprime and intra-slot hopping enabled/disabled)
    uint8_t N_SF_mprime_PUCCH_DMRS_1;
    // N_SF_mprime_PUCCH_1 contains N_SF_mprime from table 6.3.2.4.1-1   (depending on number of PUCCH symbols nrofSymbols, mprime=0 and intra-slot hopping enabled/disabled)
    uint8_t N_SF_mprime0_PUCCH_1;
    // N_SF_mprime_PUCCH_1 contains N_SF_mprime from table 6.4.1.3.1.1-1 (depending on number of PUCCH symbols nrofSymbols, mprime=0 and intra-slot hopping enabled/disabled)
    uint8_t N_SF_mprime0_PUCCH_DMRS_1;
    // mprime is 0 if no intra-slot hopping / mprime is {0,1} if intra-slot hopping
    uint8_t mprime = 0;
    if (intraSlotFrequencyHopping == 0) { // intra-slot hopping disabled
      #ifdef DEBUG_NR_PUCCH_TX
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        printf("\t [nr_generate_pucch1] block-wise spread with the orthogonal sequence wi(m) if intraSlotFrequencyHopping = %d, intra-slot hopping disabled\n",
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                intraSlotFrequencyHopping);
      #endif
      N_SF_mprime_PUCCH_1       =   table_6_3_2_4_1_1_N_SF_mprime_PUCCH_1_noHop[nrofSymbols-1]; // only if intra-slot hopping not enabled (PUCCH)
      N_SF_mprime_PUCCH_DMRS_1  = table_6_4_1_3_1_1_1_N_SF_mprime_PUCCH_1_noHop[nrofSymbols-1]; // only if intra-slot hopping not enabled (DM-RS)
      N_SF_mprime0_PUCCH_1      =   table_6_3_2_4_1_1_N_SF_mprime_PUCCH_1_noHop[nrofSymbols-1]; // only if intra-slot hopping not enabled mprime = 0 (PUCCH)
      N_SF_mprime0_PUCCH_DMRS_1 = table_6_4_1_3_1_1_1_N_SF_mprime_PUCCH_1_noHop[nrofSymbols-1]; // only if intra-slot hopping not enabled mprime = 0 (DM-RS)
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      #ifdef DEBUG_NR_PUCCH_TX
        printf("\t [nr_generate_pucch1] w_index = %d, N_SF_mprime_PUCCH_1 = %d, N_SF_mprime_PUCCH_DMRS_1 = %d, N_SF_mprime0_PUCCH_1 = %d, N_SF_mprime0_PUCCH_DMRS_1 = %d\n",
                 w_index, N_SF_mprime_PUCCH_1,N_SF_mprime_PUCCH_DMRS_1,N_SF_mprime0_PUCCH_1,N_SF_mprime0_PUCCH_DMRS_1);
      #endif
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      for (int m=0; m < N_SF_mprime_PUCCH_1; m++){
        for (int n=0; n<12 ; n++){
          z_re[(mprime*12*N_SF_mprime0_PUCCH_1)+(m*12)+n]           = (int16_t)((((int32_t)(table_6_3_2_4_1_2_Wi_Re[N_SF_mprime_PUCCH_1][w_index][m])*y_n_re[n])>>15)
                                                                              - (((int32_t)(table_6_3_2_4_1_2_Wi_Im[N_SF_mprime_PUCCH_1][w_index][m])*y_n_im[n])>>15));
          z_im[(mprime*12*N_SF_mprime0_PUCCH_1)+(m*12)+n]           = (int16_t)((((int32_t)(table_6_3_2_4_1_2_Wi_Re[N_SF_mprime_PUCCH_1][w_index][m])*y_n_im[n])>>15)
                                                                              + (((int32_t)(table_6_3_2_4_1_2_Wi_Im[N_SF_mprime_PUCCH_1][w_index][m])*y_n_re[n])>>15));
          #ifdef DEBUG_NR_PUCCH_TX
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            printf("\t [nr_generate_pucch1] block-wise spread with wi(m) (mprime=%d, m=%d, n=%d) z[%d] = ((%d * %d - %d * %d), (%d * %d + %d * %d)) = (%d,%d)\n",
                    mprime, m, n, (mprime*12*N_SF_mprime0_PUCCH_1)+(m*12)+n,
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                    table_6_3_2_4_1_2_Wi_Re[N_SF_mprime_PUCCH_1][w_index][m],y_n_re[n],table_6_3_2_4_1_2_Wi_Im[N_SF_mprime_PUCCH_1][w_index][m],y_n_im[n],
                    table_6_3_2_4_1_2_Wi_Re[N_SF_mprime_PUCCH_1][w_index][m],y_n_im[n],table_6_3_2_4_1_2_Wi_Im[N_SF_mprime_PUCCH_1][w_index][m],y_n_re[n],
                    z_re[(mprime*12*N_SF_mprime0_PUCCH_1)+(m*12)+n],z_im[(mprime*12*N_SF_mprime0_PUCCH_1)+(m*12)+n]);
          #endif
        }
      }
      for (int m=0; m < N_SF_mprime_PUCCH_DMRS_1; m++){
        for (int n=0; n<12 ; n++){
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          z_dmrs_re[(mprime*12*N_SF_mprime0_PUCCH_DMRS_1)+(m*12)+n] = (int16_t)((((int32_t)(table_6_3_2_4_1_2_Wi_Re[N_SF_mprime_PUCCH_1][w_index][m])*r_u_v_alpha_delta_dmrs_re[n])>>15)
                                                                              - (((int32_t)(table_6_3_2_4_1_2_Wi_Im[N_SF_mprime_PUCCH_1][w_index][m])*r_u_v_alpha_delta_dmrs_im[n])>>15));
          z_dmrs_im[(mprime*12*N_SF_mprime0_PUCCH_DMRS_1)+(m*12)+n] = (int16_t)((((int32_t)(table_6_3_2_4_1_2_Wi_Re[N_SF_mprime_PUCCH_1][w_index][m])*r_u_v_alpha_delta_dmrs_im[n])>>15)
                                                                              + (((int32_t)(table_6_3_2_4_1_2_Wi_Im[N_SF_mprime_PUCCH_1][w_index][m])*r_u_v_alpha_delta_dmrs_re[n])>>15));
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          #ifdef DEBUG_NR_PUCCH_TX
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            printf("\t [nr_generate_pucch1] block-wise spread with wi(m) (mprime=%d, m=%d, n=%d) z[%d] = ((%d * %d - %d * %d), (%d * %d + %d * %d)) = (%d,%d)\n",
                    mprime, m, n, (mprime*12*N_SF_mprime0_PUCCH_1)+(m*12)+n,
                    table_6_3_2_4_1_2_Wi_Re[N_SF_mprime_PUCCH_1][w_index][m],r_u_v_alpha_delta_dmrs_re[n],table_6_3_2_4_1_2_Wi_Im[N_SF_mprime_PUCCH_1][w_index][m],r_u_v_alpha_delta_dmrs_im[n],
                    table_6_3_2_4_1_2_Wi_Re[N_SF_mprime_PUCCH_1][w_index][m],r_u_v_alpha_delta_dmrs_im[n],table_6_3_2_4_1_2_Wi_Im[N_SF_mprime_PUCCH_1][w_index][m],r_u_v_alpha_delta_dmrs_re[n],
                    z_dmrs_re[(mprime*12*N_SF_mprime0_PUCCH_1)+(m*12)+n],z_dmrs_im[(mprime*12*N_SF_mprime0_PUCCH_1)+(m*12)+n]);
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          #endif
        }
      }
    }
    if (intraSlotFrequencyHopping == 1) { // intra-slot hopping enabled
      #ifdef DEBUG_NR_PUCCH_TX
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        printf("\t [nr_generate_pucch1] block-wise spread with the orthogonal sequence wi(m) if intraSlotFrequencyHopping = %d, intra-slot hopping enabled\n",
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                intraSlotFrequencyHopping);
      #endif
      N_SF_mprime_PUCCH_1       =   table_6_3_2_4_1_1_N_SF_mprime_PUCCH_1_m0Hop[nrofSymbols-1]; // only if intra-slot hopping enabled mprime = 0 (PUCCH)
      N_SF_mprime_PUCCH_DMRS_1  = table_6_4_1_3_1_1_1_N_SF_mprime_PUCCH_1_m0Hop[nrofSymbols-1]; // only if intra-slot hopping enabled mprime = 0 (DM-RS)
      N_SF_mprime0_PUCCH_1      =   table_6_3_2_4_1_1_N_SF_mprime_PUCCH_1_m0Hop[nrofSymbols-1]; // only if intra-slot hopping enabled mprime = 0 (PUCCH)
      N_SF_mprime0_PUCCH_DMRS_1 = table_6_4_1_3_1_1_1_N_SF_mprime_PUCCH_1_m0Hop[nrofSymbols-1]; // only if intra-slot hopping enabled mprime = 0 (DM-RS)
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      #ifdef DEBUG_NR_PUCCH_TX
        printf("\t [nr_generate_pucch1] w_index = %d, N_SF_mprime_PUCCH_1 = %d, N_SF_mprime_PUCCH_DMRS_1 = %d, N_SF_mprime0_PUCCH_1 = %d, N_SF_mprime0_PUCCH_DMRS_1 = %d\n",
                 w_index, N_SF_mprime_PUCCH_1,N_SF_mprime_PUCCH_DMRS_1,N_SF_mprime0_PUCCH_1,N_SF_mprime0_PUCCH_DMRS_1);
      #endif
      for (int m=0; m < N_SF_mprime_PUCCH_1; m++){
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      for (mprime = 0; mprime<2; mprime++){ // mprime can get values {0,1}
        for (int m=0; m < N_SF_mprime_PUCCH_1; m++){
          for (int n=0; n<12 ; n++){
            z_re[(mprime*12*N_SF_mprime0_PUCCH_1)+(m*12)+n]           = (int16_t)((((int32_t)(table_6_3_2_4_1_2_Wi_Re[N_SF_mprime_PUCCH_1][w_index][m])*y_n_re[n])>>15)
                                                                                - (((int32_t)(table_6_3_2_4_1_2_Wi_Im[N_SF_mprime_PUCCH_1][w_index][m])*y_n_im[n])>>15));
            z_im[(mprime*12*N_SF_mprime0_PUCCH_1)+(m*12)+n]           = (int16_t)((((int32_t)(table_6_3_2_4_1_2_Wi_Re[N_SF_mprime_PUCCH_1][w_index][m])*y_n_im[n])>>15)
                                                                                + (((int32_t)(table_6_3_2_4_1_2_Wi_Im[N_SF_mprime_PUCCH_1][w_index][m])*y_n_re[n])>>15));
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#ifdef DEBUG_NR_PUCCH_TX
  printf("\t [nr_generate_pucch1] block-wise spread with wi(m) (mprime=%d, m=%d, n=%d) z[%d] = ((%d * %d - %d * %d), (%d * %d + %d * %d)) = (%d,%d)\n",
          mprime, m, n, (mprime*12*N_SF_mprime0_PUCCH_1)+(m*12)+n,
          table_6_3_2_4_1_2_Wi_Re[N_SF_mprime_PUCCH_1][w_index][m],y_n_re[n],table_6_3_2_4_1_2_Wi_Im[N_SF_mprime_PUCCH_1][w_index][m],y_n_im[n],
          table_6_3_2_4_1_2_Wi_Re[N_SF_mprime_PUCCH_1][w_index][m],y_n_im[n],table_6_3_2_4_1_2_Wi_Im[N_SF_mprime_PUCCH_1][w_index][m],y_n_re[n],
          z_re[(mprime*12*N_SF_mprime0_PUCCH_1)+(m*12)+n],z_im[(mprime*12*N_SF_mprime0_PUCCH_1)+(m*12)+n]);
#endif
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          }
        }
        for (int m=0; m < N_SF_mprime_PUCCH_DMRS_1; m++){
          for (int n=0; n<12 ; n++){
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            z_dmrs_re[(mprime*12*N_SF_mprime0_PUCCH_DMRS_1)+(m*12)+n] = (int16_t)((((int32_t)(table_6_3_2_4_1_2_Wi_Re[N_SF_mprime_PUCCH_1][w_index][m])*r_u_v_alpha_delta_dmrs_re[n])>>15)
                                                                                - (((int32_t)(table_6_3_2_4_1_2_Wi_Im[N_SF_mprime_PUCCH_1][w_index][m])*r_u_v_alpha_delta_dmrs_im[n])>>15));
            z_dmrs_im[(mprime*12*N_SF_mprime0_PUCCH_DMRS_1)+(m*12)+n] = (int16_t)((((int32_t)(table_6_3_2_4_1_2_Wi_Re[N_SF_mprime_PUCCH_1][w_index][m])*r_u_v_alpha_delta_dmrs_im[n])>>15)
                                                                                + (((int32_t)(table_6_3_2_4_1_2_Wi_Im[N_SF_mprime_PUCCH_1][w_index][m])*r_u_v_alpha_delta_dmrs_re[n])>>15));
#ifdef DEBUG_NR_PUCCH_TX
  printf("\t [nr_generate_pucch1] block-wise spread with wi(m) (mprime=%d, m=%d, n=%d) z[%d] = ((%d * %d - %d * %d), (%d * %d + %d * %d)) = (%d,%d)\n",
          mprime, m, n, (mprime*12*N_SF_mprime0_PUCCH_1)+(m*12)+n,
          table_6_3_2_4_1_2_Wi_Re[N_SF_mprime_PUCCH_1][w_index][m],r_u_v_alpha_delta_dmrs_re[n],table_6_3_2_4_1_2_Wi_Im[N_SF_mprime_PUCCH_1][w_index][m],r_u_v_alpha_delta_dmrs_im[n],
          table_6_3_2_4_1_2_Wi_Re[N_SF_mprime_PUCCH_1][w_index][m],r_u_v_alpha_delta_dmrs_im[n],table_6_3_2_4_1_2_Wi_Im[N_SF_mprime_PUCCH_1][w_index][m],r_u_v_alpha_delta_dmrs_re[n],
          z_dmrs_re[(mprime*12*N_SF_mprime0_PUCCH_1)+(m*12)+n],z_dmrs_im[(mprime*12*N_SF_mprime0_PUCCH_1)+(m*12)+n]);
#endif
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          }
        }
        N_SF_mprime_PUCCH_1       =   table_6_3_2_4_1_1_N_SF_mprime_PUCCH_1_m1Hop[nrofSymbols-1]; // only if intra-slot hopping enabled mprime = 1 (PUCCH)
        N_SF_mprime_PUCCH_DMRS_1  = table_6_4_1_3_1_1_1_N_SF_mprime_PUCCH_1_m1Hop[nrofSymbols-1]; // only if intra-slot hopping enabled mprime = 1 (DM-RS)
      }
534
      }
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    }
    if ((intraSlotFrequencyHopping == 1) && (l<floor(nrofSymbols/2))) { // intra-slot hopping enabled, we need to calculate new offset PRB
      startingPRB = startingPRB + startingPRB_intraSlotHopping;
    }
    if ((startingPRB <  (frame_parms->N_RB_DL>>1)) && ((frame_parms->N_RB_DL & 1) == 0)) { // if number RBs in bandwidth is even and current PRB is lower band
      re_offset = ((l+startingSymbolIndex)*frame_parms->ofdm_symbol_size) + (12*startingPRB) + frame_parms->first_carrier_offset;
    }
    if ((startingPRB >= (frame_parms->N_RB_DL>>1)) && ((frame_parms->N_RB_DL & 1) == 0)) { // if number RBs in bandwidth is even and current PRB is upper band
      re_offset = ((l+startingSymbolIndex)*frame_parms->ofdm_symbol_size) + (12*(startingPRB-(frame_parms->N_RB_DL>>1)));
    }
    if ((startingPRB <  (frame_parms->N_RB_DL>>1)) && ((frame_parms->N_RB_DL & 1) == 1)) { // if number RBs in bandwidth is odd  and current PRB is lower band
      re_offset = ((l+startingSymbolIndex)*frame_parms->ofdm_symbol_size) + (12*startingPRB) + frame_parms->first_carrier_offset;
    }
    if ((startingPRB >  (frame_parms->N_RB_DL>>1)) && ((frame_parms->N_RB_DL & 1) == 1)) { // if number RBs in bandwidth is odd  and current PRB is upper band
      re_offset = ((l+startingSymbolIndex)*frame_parms->ofdm_symbol_size) + (12*(startingPRB-(frame_parms->N_RB_DL>>1))) + 6;
    }
    if ((startingPRB == (frame_parms->N_RB_DL>>1)) && ((frame_parms->N_RB_DL & 1) == 1)) { // if number RBs in bandwidth is odd  and current PRB contains DC
      re_offset = ((l+startingSymbolIndex)*frame_parms->ofdm_symbol_size) + (12*startingPRB) + frame_parms->first_carrier_offset;
    }


556
    //txptr = &txdataF[0][re_offset];
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    for (int n=0; n<12; n++){
      if ((n==6) && (startingPRB == (frame_parms->N_RB_DL>>1)) && ((frame_parms->N_RB_DL & 1) == 1)) {
        // if number RBs in bandwidth is odd  and current PRB contains DC, we need to recalculate the offset when n=6 (for second half PRB)
        re_offset = ((l+startingSymbolIndex)*frame_parms->ofdm_symbol_size);
      }
      if (l%2 == 1) { // mapping PUCCH according to TS38.211 subclause 6.4.1.3.1
        ((int16_t *)&txdataF[0][re_offset])[0] = z_re[i+n];
        ((int16_t *)&txdataF[0][re_offset])[1] = z_im[i+n];
        #ifdef DEBUG_NR_PUCCH_TX
          printf("\t [nr_generate_pucch1] mapping PUCCH to RE \t amp=%d \tofdm_symbol_size=%d \tN_RB_DL=%d \tfirst_carrier_offset=%d \tz_pucch[%d]=txptr(%d)=(x_n(l=%d,n=%d)=(%d,%d))\n",
                  amp,frame_parms->ofdm_symbol_size,frame_parms->N_RB_DL,frame_parms->first_carrier_offset,i+n,re_offset,
                  l,n,((int16_t *)&txdataF[0][re_offset])[0],((int16_t *)&txdataF[0][re_offset])[1]);
        #endif
      }
      if (l%2 == 0) { // mapping DM-RS signal according to TS38.211 subclause 6.4.1.3.1
        ((int16_t *)&txdataF[0][re_offset])[0] = z_dmrs_re[i+n];
        ((int16_t *)&txdataF[0][re_offset])[1] = z_dmrs_im[i+n];
        #ifdef DEBUG_NR_PUCCH_TX
          printf("\t [nr_generate_pucch1] mapping DM-RS to RE \t amp=%d \tofdm_symbol_size=%d \tN_RB_DL=%d \tfirst_carrier_offset=%d \tz_dm-rs[%d]=txptr(%d)=(x_n(l=%d,n=%d)=(%d,%d))\n",
                  amp,frame_parms->ofdm_symbol_size,frame_parms->N_RB_DL,frame_parms->first_carrier_offset,i+n,re_offset,
                  l,n,((int16_t *)&txdataF[0][re_offset])[0],((int16_t *)&txdataF[0][re_offset])[1]);
        #endif
      }
      re_offset++;
    }
    if (l%2 == 1) i+=12;
  }
}

#if 0
void nr_generate_pucch1_old(PHY_VARS_NR_UE *ue,
                        int32_t **txdataF,
                        NR_DL_FRAME_PARMS *frame_parms,
                        PUCCH_CONFIG_DEDICATED *pucch_config_dedicated,
                        uint64_t payload,
                        int16_t amp,
                        int nr_tti_tx,
                        uint8_t m0,
                        uint8_t nrofSymbols,
                        uint8_t startingSymbolIndex,
                        uint16_t startingPRB,
                        uint16_t startingPRB_intraSlotHopping,
                        uint8_t timeDomainOCC,
                        uint8_t nr_bit) {
#ifdef DEBUG_NR_PUCCH_TX
  printf("\t [nr_generate_pucch1] start function at slot(nr_tti_tx)=%d payload=%d m0=%d nrofSymbols=%d startingSymbolIndex=%d startingPRB=%d startingPRB_intraSlotHopping=%d timeDomainOCC=%d nr_bit=%d\n",
          nr_tti_tx,payload,m0,nrofSymbols,startingSymbolIndex,startingPRB,startingPRB_intraSlotHopping,timeDomainOCC,nr_bit);
#endif
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  /*
   * Implement TS 38.211 Subclause 6.3.2.4.1 Sequence modulation
   *
   */
  // complex-valued symbol d_re, d_im containing complex-valued symbol d(0):
  int16_t d_re, d_im;
612
  if (nr_bit == 1) { // using BPSK if M_bit=1 according to TC 38.211 Subclause 5.1.2
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    d_re = (payload&1)==0 ? (int16_t)(((int32_t)amp*ONE_OVER_SQRT2)>>15) : -(int16_t)(((int32_t)amp*ONE_OVER_SQRT2)>>15);
    d_im = (payload&1)==0 ? (int16_t)(((int32_t)amp*ONE_OVER_SQRT2)>>15) : -(int16_t)(((int32_t)amp*ONE_OVER_SQRT2)>>15);
  }
616
  if (nr_bit == 2) { // using QPSK if M_bit=2 according to TC 38.211 Subclause 5.1.2
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    if (((payload&1)==0) && (((payload>>1)&1)==0)) {
      d_re =  (int16_t)(((int32_t)amp*ONE_OVER_SQRT2)>>15); // 32767/sqrt(2) = 23170 (ONE_OVER_SQRT2)
      d_im =  (int16_t)(((int32_t)amp*ONE_OVER_SQRT2)>>15);
    }
    if (((payload&1)==0) && (((payload>>1)&1)==1)) {
      d_re =  (int16_t)(((int32_t)amp*ONE_OVER_SQRT2)>>15);
      d_im = -(int16_t)(((int32_t)amp*ONE_OVER_SQRT2)>>15);
    }
    if (((payload&1)==1) && (((payload>>1)&1)==0)) {
      d_re = -(int16_t)(((int32_t)amp*ONE_OVER_SQRT2)>>15);
      d_im =  (int16_t)(((int32_t)amp*ONE_OVER_SQRT2)>>15);
    }
    if (((payload&1)==1) && (((payload>>1)&1)==1)) {
      d_re = -(int16_t)(((int32_t)amp*ONE_OVER_SQRT2)>>15);
      d_im = -(int16_t)(((int32_t)amp*ONE_OVER_SQRT2)>>15);
    }
  }
  #ifdef DEBUG_NR_PUCCH_TX
    printf("\t [nr_generate_pucch1] sequence modulation: payload=%x \tde_re=%d \tde_im=%d\n",payload,d_re,d_im);
  #endif

  /*
   * Defining cyclic shift hopping TS 38.211 Subclause 6.3.2.2.2
   */
  // alpha is cyclic shift
  double alpha;
  // lnormal is the OFDM symbol number in the PUCCH transmission where l=0 corresponds to the first OFDM symbol of the PUCCH transmission
  uint8_t lnormal = 0 ;
  // lprime is the index of the OFDM symbol in the slot that corresponds to the first OFDM symbol of the PUCCH transmission in the slot given by [5, TS 38.213]
  uint8_t lprime = startingSymbolIndex;
  // mcs = 0 except for PUCCH format 0
  uint8_t mcs=0;
  // r_u_v_alpha_delta_re and r_u_v_alpha_delta_im tables containing the sequence for the DM-RS.
  // When they are multiplied by d(0), they become the sequence y(n) for the PUCCH
  int16_t r_u_v_alpha_delta_re[12],r_u_v_alpha_delta_im[12];
  /*
   * in TS 38.213 Subclause 9.2.1 it is said that:
   * for PUCCH format 0 or PUCCH format 1, the index of the cyclic shift
   * is indicated by higher layer parameter PUCCH-F0-F1-initial-cyclic-shift
   */

  /*
   * the complex-valued symbol d_0 shall be multiplied with a sequence r_u_v_alpha_delta(n): y(n) = d_0 * r_u_v_alpha_delta(n)
   */
  // the value of u,v (delta always 0 for PUCCH) has to be calculated according to TS 38.211 Subclause 6.3.2.2.1
  uint8_t u=0,v=0,delta=0;
  // if frequency hopping is disabled, intraSlotFrequencyHopping is not provided
  //              n_hop = 0
  // if frequency hopping is enabled,  intraSlotFrequencyHopping is     provided
  //              n_hop = 0 for first hop
  //              n_hop = 1 for second hop
  uint8_t n_hop = 0;
  // Intra-slot frequency hopping shall be assumed when the higher-layer parameter intraSlotFrequencyHopping is provided,
  // regardless of whether the frequency-hop distance is zero or not,
  // otherwise no intra-slot frequency hopping shall be assumed
672
  //uint8_t PUCCH_Frequency_Hopping = 0 ; // from higher layers
673
  uint8_t intraSlotFrequencyHopping = 0;
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  if (startingPRB != startingPRB_intraSlotHopping){
    intraSlotFrequencyHopping=1;
    #ifdef DEBUG_NR_PUCCH_TX
677
      printf("\t [nr_generate_pucch1] intraSlotFrequencyHopping=%d \n",intraSlotFrequencyHopping);
678 679 680 681 682 683
    #endif
    // n_hop = 1 for second hop;
    // FIXME
    // When hopping will be activated we have to implement this function differently as PUCH signal generation depends on n_hop value for u,v calculation
  }

684 685
  // y_n contains the complex value d multiplied by the sequence r_u_v
  int16_t y_n_re[12],y_n_im[12];
686
  #ifdef DEBUG_NR_PUCCH_TX
687 688
    printf("\t [nr_generate_pucch1] entering function nr_group_sequence_hopping with n_hop=%d, nr_tti_tx=%d\n",
            n_hop,nr_tti_tx);
689
  #endif
690 691
  nr_group_sequence_hopping(ue,n_hop,nr_tti_tx,&u,&v); // calculating u and v value
  alpha = nr_cyclic_shift_hopping(ue,m0,mcs,lnormal,lprime,nr_tti_tx);
692
  for (int n=0; n<12; n++){
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    r_u_v_alpha_delta_re[n] = (int16_t)(((((int32_t)(round(32767*cos(alpha*n))) * table_5_2_2_2_2_Re[u][n])>>15)
                                       - (((int32_t)(round(32767*sin(alpha*n))) * table_5_2_2_2_2_Im[u][n])>>15))); // Re part of base sequence shifted by alpha
    r_u_v_alpha_delta_im[n] = (int16_t)(((((int32_t)(round(32767*cos(alpha*n))) * table_5_2_2_2_2_Im[u][n])>>15)
                                       + (((int32_t)(round(32767*sin(alpha*n))) * table_5_2_2_2_2_Re[u][n])>>15))); // Im part of base sequence shifted by alpha
697
    // PUCCH sequence = DM-RS sequence multiplied by d(0)
698 699 700 701
    y_n_re[n]               = (int16_t)(((((int32_t)(r_u_v_alpha_delta_re[n])*d_re)>>15)
                                       - (((int32_t)(r_u_v_alpha_delta_im[n])*d_im)>>15))); // Re part of y(n)
    y_n_im[n]               = (int16_t)(((((int32_t)(r_u_v_alpha_delta_re[n])*d_im)>>15)
                                       + (((int32_t)(r_u_v_alpha_delta_im[n])*d_re)>>15))); // Im part of y(n)
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    // DM-RS sequence
    r_u_v_alpha_delta_re[n] = (int16_t)(((int32_t)amp*r_u_v_alpha_delta_re[n])>>15);
    r_u_v_alpha_delta_im[n] = (int16_t)(((int32_t)amp*r_u_v_alpha_delta_im[n])>>15);
    #ifdef DEBUG_NR_PUCCH_TX
      printf("\t [nr_generate_pucch1] sequence generation \tu=%d \tv=%d \talpha=%lf \tr_u_v_alpha_delta[n=%d]=(%d,%d) \ty_n[n=%d]=(%d,%d)\n",
          u,v,alpha,n,r_u_v_alpha_delta_re[n],r_u_v_alpha_delta_im[n],n,y_n_re[n],y_n_im[n]);
    #endif
  }
  /*
   * The block of complex-valued symbols y(n) shall be block-wise spread with the orthogonal sequence wi(m)
   * (defined in table_6_3_2_4_1_2_Wi_Re and table_6_3_2_4_1_2_Wi_Im)
   * z(mprime*12*table_6_3_2_4_1_1_N_SF_mprime_PUCCH_1_noHop[pucch_symbol_length]+m*12+n)=wi(m)*y(n)
   *
   * The block of complex-valued symbols r_u_v_alpha_delta(n) for DM-RS shall be block-wise spread with the orthogonal sequence wi(m)
   * (defined in table_6_3_2_4_1_2_Wi_Re and table_6_3_2_4_1_2_Wi_Im)
   * z(mprime*12*table_6_4_1_3_1_1_1_N_SF_mprime_PUCCH_1_noHop[pucch_symbol_length]+m*12+n)=wi(m)*y(n)
   *
   * We are not implementing intra-slot hopping at the moment (so mprime=0)FIXME!
   */
#define MAX_SIZE_Z 168 // this value has to be calculated from mprime*12*table_6_3_2_4_1_1_N_SF_mprime_PUCCH_1_noHop[pucch_symbol_length]+m*12+n
  int16_t z_re[MAX_SIZE_Z],z_im[MAX_SIZE_Z];
  int16_t z_dmrs_re[MAX_SIZE_Z],z_dmrs_im[MAX_SIZE_Z];
  // the orthogonal sequence index for wi(m) defined in TS 38.213 Subclause 9.2.1
  // the index of the orthogonal cover code is from a set determined as described in [4, TS 38.211]
  // and is indicated by higher layer parameter PUCCH-F1-time-domain-OCC
  // In the PUCCH_Config IE, the PUCCH-format1, timeDomainOCC field FIXME!
  uint8_t w_index = timeDomainOCC; // to be filled with the value of timeDomainOCC, higher layers parameters FIXME !!!
  // N_SF_mprime_PUCCH_1 contains N_SF_mprime from table 6.3.2.4.1-1   (depending on number of PUCCH symbols nrofSymbols, mprime and intra-slot hopping enabled/disabled)
  uint8_t N_SF_mprime_PUCCH_1;
  // N_SF_mprime_PUCCH_1 contains N_SF_mprime from table 6.4.1.3.1.1-1 (depending on number of PUCCH symbols nrofSymbols, mprime and intra-slot hopping enabled/disabled)
  uint8_t N_SF_mprime_PUCCH_DMRS_1;
  // N_SF_mprime_PUCCH_1 contains N_SF_mprime from table 6.3.2.4.1-1   (depending on number of PUCCH symbols nrofSymbols, mprime=0 and intra-slot hopping enabled/disabled)
  uint8_t N_SF_mprime0_PUCCH_1;
  // N_SF_mprime_PUCCH_1 contains N_SF_mprime from table 6.4.1.3.1.1-1 (depending on number of PUCCH symbols nrofSymbols, mprime=0 and intra-slot hopping enabled/disabled)
  uint8_t N_SF_mprime0_PUCCH_DMRS_1;
  // mprime is 0 if no intra-slot hopping / mprime is {0,1} if intra-slot hopping
  uint8_t mprime = 0;
  if (intraSlotFrequencyHopping == 0) { // intra-slot hopping disabled
    #ifdef DEBUG_NR_PUCCH_TX
      printf("\t [nr_generate_pucch1] block-wise spread with the orthogonal sequence wi(m) if intraSlotFrequencyHopping = %d\n",
              intraSlotFrequencyHopping);
    #endif
    N_SF_mprime_PUCCH_1       =   table_6_3_2_4_1_1_N_SF_mprime_PUCCH_1_noHop[nrofSymbols-1]; // only if intra-slot hopping not enabled (PUCCH)
    N_SF_mprime_PUCCH_DMRS_1  = table_6_4_1_3_1_1_1_N_SF_mprime_PUCCH_1_noHop[nrofSymbols-1]; // only if intra-slot hopping not enabled (DM-RS)
    N_SF_mprime0_PUCCH_1      =   table_6_3_2_4_1_1_N_SF_mprime_PUCCH_1_noHop[nrofSymbols-1]; // only if intra-slot hopping not enabled mprime = 0 (PUCCH)
    N_SF_mprime0_PUCCH_DMRS_1 = table_6_4_1_3_1_1_1_N_SF_mprime_PUCCH_1_noHop[nrofSymbols-1]; // only if intra-slot hopping not enabled mprime = 0 (DM-RS)
    for (int m=0; m < N_SF_mprime_PUCCH_1; m++){
      for (int n=0; n<12 ; n++){
        z_re[(mprime*12*N_SF_mprime0_PUCCH_1)+(m*12)+n]           = (int16_t)((((int32_t)(table_6_3_2_4_1_2_Wi_Re[N_SF_mprime_PUCCH_1][w_index][m])*y_n_re[n])>>15)
                                                                            - (((int32_t)(table_6_3_2_4_1_2_Wi_Im[N_SF_mprime_PUCCH_1][w_index][m])*y_n_im[n])>>15));
        z_im[(mprime*12*N_SF_mprime0_PUCCH_1)+(m*12)+n]           = (int16_t)((((int32_t)(table_6_3_2_4_1_2_Wi_Re[N_SF_mprime_PUCCH_1][w_index][m])*y_n_im[n])>>15)
                                                                            + (((int32_t)(table_6_3_2_4_1_2_Wi_Im[N_SF_mprime_PUCCH_1][w_index][m])*y_n_re[n])>>15));
        #ifdef DEBUG_NR_PUCCH_TX
          printf("\t\t z_pucch[%d] \t= ((%d \t* %d \t-%d \t* %d),   (%d \t* %d \t+%d \t*%d))    = (%d,%d)\n",
                  (mprime*12*N_SF_mprime0_PUCCH_1)+(m*12)+n,
                  table_6_3_2_4_1_2_Wi_Re[N_SF_mprime_PUCCH_1][w_index][m],y_n_re[n],table_6_3_2_4_1_2_Wi_Im[N_SF_mprime_PUCCH_1][w_index][m],y_n_im[n],
                  table_6_3_2_4_1_2_Wi_Re[N_SF_mprime_PUCCH_1][w_index][m],y_n_im[n],table_6_3_2_4_1_2_Wi_Im[N_SF_mprime_PUCCH_1][w_index][m],y_n_re[n],
                  z_re[(mprime*12*N_SF_mprime0_PUCCH_1)+(m*12)+n],z_im[(mprime*12*N_SF_mprime0_PUCCH_1)+(m*12)+n]);
        #endif
      }
    }
    for (int m=0; m < N_SF_mprime_PUCCH_DMRS_1; m++){
      for (int n=0; n<12 ; n++){
        z_dmrs_re[(mprime*12*N_SF_mprime0_PUCCH_DMRS_1)+(m*12)+n] = (int16_t)((((int32_t)(table_6_3_2_4_1_2_Wi_Re[N_SF_mprime_PUCCH_1][w_index][m])*r_u_v_alpha_delta_re[n])>>15)
                                                                            - (((int32_t)(table_6_3_2_4_1_2_Wi_Im[N_SF_mprime_PUCCH_1][w_index][m])*r_u_v_alpha_delta_im[n])>>15));
        z_dmrs_im[(mprime*12*N_SF_mprime0_PUCCH_DMRS_1)+(m*12)+n] = (int16_t)((((int32_t)(table_6_3_2_4_1_2_Wi_Re[N_SF_mprime_PUCCH_1][w_index][m])*r_u_v_alpha_delta_im[n])>>15)
                                                                            + (((int32_t)(table_6_3_2_4_1_2_Wi_Im[N_SF_mprime_PUCCH_1][w_index][m])*r_u_v_alpha_delta_re[n])>>15));
        #ifdef DEBUG_NR_PUCCH_TX
          printf("\t\t z_dm-rs[%d] = ((),()) =(%d,%d)\n",
                  (mprime*12*N_SF_mprime0_PUCCH_DMRS_1)+(m*12)+n,z_dmrs_re[(mprime*12*N_SF_mprime0_PUCCH_1)+(m*12)+n],z_dmrs_im[(mprime*12*N_SF_mprime0_PUCCH_1)+(m*12)+n]);
        #endif
      }
    }
  }
  if (intraSlotFrequencyHopping == 1) { // intra-slot hopping enabled
    #ifdef DEBUG_NR_PUCCH_TX
      printf("\t [nr_generate_pucch1] block-wise spread with the orthogonal sequence wi(m) if intraSlotFrequencyHopping = %d\n",
              intraSlotFrequencyHopping);
    #endif
    N_SF_mprime_PUCCH_1       =   table_6_3_2_4_1_1_N_SF_mprime_PUCCH_1_m0Hop[nrofSymbols-1]; // only if intra-slot hopping enabled mprime = 0 (PUCCH)
    N_SF_mprime_PUCCH_DMRS_1  = table_6_4_1_3_1_1_1_N_SF_mprime_PUCCH_1_m0Hop[nrofSymbols-1]; // only if intra-slot hopping enabled mprime = 0 (DM-RS)
    N_SF_mprime0_PUCCH_1      =   table_6_3_2_4_1_1_N_SF_mprime_PUCCH_1_m0Hop[nrofSymbols-1]; // only if intra-slot hopping enabled mprime = 0 (PUCCH)
    N_SF_mprime0_PUCCH_DMRS_1 = table_6_4_1_3_1_1_1_N_SF_mprime_PUCCH_1_m0Hop[nrofSymbols-1]; // only if intra-slot hopping enabled mprime = 0 (DM-RS)
    for (mprime = 0; mprime<2; mprime++){ // mprime can get values {0,1}
      for (int m=0; m < N_SF_mprime_PUCCH_1; m++){
        for (int n=0; n<12 ; n++){
          z_re[(mprime*12*N_SF_mprime0_PUCCH_1)+(m*12)+n]           = (int16_t)((((int32_t)(table_6_3_2_4_1_2_Wi_Re[N_SF_mprime_PUCCH_1][w_index][m])*y_n_re[n])>>15)
                                                                              - (((int32_t)(table_6_3_2_4_1_2_Wi_Im[N_SF_mprime_PUCCH_1][w_index][m])*y_n_im[n])>>15));
          z_im[(mprime*12*N_SF_mprime0_PUCCH_1)+(m*12)+n]           = (int16_t)((((int32_t)(table_6_3_2_4_1_2_Wi_Re[N_SF_mprime_PUCCH_1][w_index][m])*y_n_im[n])>>15)
                                                                              + (((int32_t)(table_6_3_2_4_1_2_Wi_Im[N_SF_mprime_PUCCH_1][w_index][m])*y_n_re[n])>>15));
        }
      }
      for (int m=0; m < N_SF_mprime_PUCCH_DMRS_1; m++){
        for (int n=0; n<12 ; n++){
          z_dmrs_re[(mprime*12*N_SF_mprime0_PUCCH_DMRS_1)+(m*12)+n] = (int16_t)((((int32_t)(table_6_3_2_4_1_2_Wi_Re[N_SF_mprime_PUCCH_1][w_index][m])*r_u_v_alpha_delta_re[n])>>15)
                                                                              - (((int32_t)(table_6_3_2_4_1_2_Wi_Im[N_SF_mprime_PUCCH_1][w_index][m])*r_u_v_alpha_delta_im[n])>>15));
          z_dmrs_im[(mprime*12*N_SF_mprime0_PUCCH_DMRS_1)+(m*12)+n] = (int16_t)((((int32_t)(table_6_3_2_4_1_2_Wi_Re[N_SF_mprime_PUCCH_1][w_index][m])*r_u_v_alpha_delta_im[n])>>15)
                                                                              + (((int32_t)(table_6_3_2_4_1_2_Wi_Im[N_SF_mprime_PUCCH_1][w_index][m])*r_u_v_alpha_delta_re[n])>>15));
        }
      }
      N_SF_mprime_PUCCH_1       =   table_6_3_2_4_1_1_N_SF_mprime_PUCCH_1_m1Hop[nrofSymbols-1]; // only if intra-slot hopping enabled mprime = 1 (PUCCH)
      N_SF_mprime_PUCCH_DMRS_1  = table_6_4_1_3_1_1_1_N_SF_mprime_PUCCH_1_m1Hop[nrofSymbols-1]; // only if intra-slot hopping enabled mprime = 1 (DM-RS)
    }
  }
/*
 * Implementing TS 38.211 Subclause 6.3.2.4.2 Mapping to physical resources
 */
  int32_t *txptr;
  uint32_t re_offset;
  int i=0;
  for (int l=0; l<nrofSymbols; l++) {
    if ((intraSlotFrequencyHopping == 1) && (l<floor(nrofSymbols/2))) { // intra-slot hopping enabled, we need to calculate new PRB, FIXME!!!
      startingPRB = startingPRB + startingPRB_intraSlotHopping;
    }
    if ((startingPRB <  (frame_parms->N_RB_DL>>1)) && ((frame_parms->N_RB_DL & 1) == 0)) { // if number RBs in bandwidth is even and current PRB is lower band
      re_offset = ((l+startingSymbolIndex)*frame_parms->ofdm_symbol_size) + (12*startingPRB) + frame_parms->first_carrier_offset;
    }
    if ((startingPRB >= (frame_parms->N_RB_DL>>1)) && ((frame_parms->N_RB_DL & 1) == 0)) { // if number RBs in bandwidth is even and current PRB is upper band
      re_offset = ((l+startingSymbolIndex)*frame_parms->ofdm_symbol_size) + (12*(startingPRB-(frame_parms->N_RB_DL>>1)));
    }
    if ((startingPRB <  (frame_parms->N_RB_DL>>1)) && ((frame_parms->N_RB_DL & 1) == 1)) { // if number RBs in bandwidth is odd  and current PRB is lower band
      re_offset = ((l+startingSymbolIndex)*frame_parms->ofdm_symbol_size) + (12*startingPRB) + frame_parms->first_carrier_offset;
    }
    if ((startingPRB >  (frame_parms->N_RB_DL>>1)) && ((frame_parms->N_RB_DL & 1) == 1)) { // if number RBs in bandwidth is odd  and current PRB is upper band
      re_offset = ((l+startingSymbolIndex)*frame_parms->ofdm_symbol_size) + (12*(startingPRB-(frame_parms->N_RB_DL>>1))) + 6;
    }
    if ((startingPRB == (frame_parms->N_RB_DL>>1)) && ((frame_parms->N_RB_DL & 1) == 1)) { // if number RBs in bandwidth is odd  and current PRB contains DC
      re_offset = ((l+startingSymbolIndex)*frame_parms->ofdm_symbol_size) + (12*startingPRB) + frame_parms->first_carrier_offset;
    }
    txptr = &txdataF[0][re_offset];
    for (int n=0; n<12; n++){
      if ((n==6) && (startingPRB == (frame_parms->N_RB_DL>>1)) && ((frame_parms->N_RB_DL & 1) == 1)) {
        // if number RBs in bandwidth is odd  and current PRB contains DC, we need to recalculate the offset when n=6 (for second half PRB)
        re_offset = ((l+startingSymbolIndex)*frame_parms->ofdm_symbol_size);
      }
      if (l%2 == 1) { // mapping PUCCH according to TS38.211 subclause 6.4.1.3.1
        ((int16_t *)&txdataF[0][re_offset])[0] = z_re[i+n];
        ((int16_t *)&txdataF[0][re_offset])[1] = z_im[i+n];
        #ifdef DEBUG_NR_PUCCH_TX
          printf("\t [nr_generate_pucch1] mapping PUCCH to RE \t amp=%d \tofdm_symbol_size=%d \tN_RB_DL=%d \tfirst_carrier_offset=%d \tz_pucch[%d]=txptr(%d)=(x_n(l=%d,n=%d)=(%d,%d))\n",
                  amp,frame_parms->ofdm_symbol_size,frame_parms->N_RB_DL,frame_parms->first_carrier_offset,i+n,re_offset,
                  l,n,((int16_t *)&txdataF[0][re_offset])[0],((int16_t *)&txdataF[0][re_offset])[1]);
        #endif
      }
      if (l%2 == 0) { // mapping DM-RS signal according to TS38.211 subclause 6.4.1.3.1
        ((int16_t *)&txdataF[0][re_offset])[0] = z_dmrs_re[i+n];
        ((int16_t *)&txdataF[0][re_offset])[1] = z_dmrs_im[i+n];
        #ifdef DEBUG_NR_PUCCH_TX
          printf("\t [nr_generate_pucch1] mapping DM-RS to RE \t amp=%d \tofdm_symbol_size=%d \tN_RB_DL=%d \tfirst_carrier_offset=%d \tz_dm-rs[%d]=txptr(%d)=(x_n(l=%d,n=%d)=(%d,%d))\n",
                  amp,frame_parms->ofdm_symbol_size,frame_parms->N_RB_DL,frame_parms->first_carrier_offset,i+n,re_offset,
                  l,n,((int16_t *)&txdataF[0][re_offset])[0],((int16_t *)&txdataF[0][re_offset])[1]);
        #endif
      }
      re_offset++;
    }
    if (l%2 == 1) i+=12;
  }
}
860
#endif //0
861 862 863 864 865 866 867 868

inline void nr_pucch2_3_4_scrambling(uint16_t M_bit,uint16_t rnti,uint16_t n_id,uint32_t B,uint8_t *btilde) __attribute__((always_inline));
inline void nr_pucch2_3_4_scrambling(uint16_t M_bit,uint16_t rnti,uint16_t n_id,uint32_t B,uint8_t *btilde) {

  uint32_t x1, x2, s=0;
  int i;
  uint8_t c;
  // c_init=nRNTI*2^15+n_id according to TS 38.211 Subclause 6.3.2.6.1
869
  //x2 = (rnti) + ((uint32_t)(1+nr_tti_tx)<<16)*(1+(fp->Nid_cell<<1));
870 871 872 873 874 875 876 877
  x2 = ((rnti)<<15)+n_id;
  s = lte_gold_generic(&x1, &x2, 1);
  #ifdef DEBUG_NR_PUCCH_TX
    printf("\t\t [nr_pucch2_3_4_scrambling] gold sequence s=%lx\n",s);
  #endif
  for (i=0;i<M_bit;i++) {
    c = (uint8_t)((s>>i)&1);
    btilde[i] = (((B>>i)&1) ^ c);
878
    #ifdef DEBUG_NR_PUCCH_TX
879
      //printf("\t\t\t btilde[%d]=%lx from scrambled bit %d\n",i,btilde[i],((B>>i)&1));
880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907
    #endif
  }
  #ifdef DEBUG_NR_PUCCH_TX
    printf("\t\t [nr_pucch2_3_4_scrambling] scrambling M_bit=%d bits\n", M_bit);
  #endif

}
void nr_uci_encoding(uint64_t payload,
                     uint8_t nr_bit,
                     pucch_format_nr_t fmt,
                     uint8_t is_pi_over_2_bpsk_enabled,
                     uint8_t nrofSymbols,
                     uint8_t nrofPRB,
                     uint8_t n_SF_PUCCH_s,
                     uint8_t intraSlotFrequencyHopping,
                     uint8_t add_dmrs,
                     uint64_t *b,
                     uint16_t *M_bit) {
  /*
   * Implementing TS 38.212 Subclause 6.3.1.2
   *
   */

  // A is the payload size, to be provided in function call
  uint8_t A = nr_bit;
  // L is the CRC size
  uint8_t L;
  // E is the rate matching output sequence length as given in TS 38.212 subclause 6.3.1.4.1
908
  uint16_t E=0,E_init;
909 910 911 912 913
  if (fmt == pucch_format2_nr) E = 16*nrofSymbols*nrofPRB;
  if (fmt == pucch_format3_nr){
    E_init = (is_pi_over_2_bpsk_enabled == 0) ? 24:12;
    if (nrofSymbols == 4) {
      E = (intraSlotFrequencyHopping == 0)?(E_init*(nrofSymbols-1)*nrofPRB):((E_init*(nrofSymbols-1)*nrofPRB));
914 915 916
      #ifdef DEBUG_NR_PUCCH_TX
        printf("format 3 nrofSymbols =4 and E_init=%d,E=%d\n",E_init,E);
      #endif
917 918 919
    }
    if (nrofSymbols > 4)  {
      E = E_init*(nrofSymbols-2)*nrofPRB;
920 921 922
      #ifdef DEBUG_NR_PUCCH_TX
        printf("format 3 nrofSymbols >4 and E_init=%d,E = %d\n",E_init,E);
      #endif
923 924 925
    }
    if (nrofSymbols > 9)  {
      E = (add_dmrs == 0)?(E_init*(nrofSymbols-2)*nrofPRB):((E_init*(nrofSymbols-4)*nrofPRB));
926 927 928
      #ifdef DEBUG_NR_PUCCH_TX
        printf("format 3 nrofSymbols >9 and E_init=%d,E = %d\n",E_init,E);
      #endif
929 930 931 932 933 934
    }
  }
  if (fmt == pucch_format4_nr){
    E_init = (is_pi_over_2_bpsk_enabled == 0) ? 24:12;
    if (nrofSymbols == 4) {
      E = (intraSlotFrequencyHopping == 0)?(E_init*(nrofSymbols-1)/n_SF_PUCCH_s):((E_init*(nrofSymbols-1)/n_SF_PUCCH_s));
935 936 937
      #ifdef DEBUG_NR_PUCCH_TX
        printf("format 4 nrofSymbols =4 and E_init=%d,E=%d\n",E_init,E);
      #endif
938 939 940
    }
    if (nrofSymbols > 4)  {
      E = E_init*(nrofSymbols-2)/n_SF_PUCCH_s;
941 942 943
      #ifdef DEBUG_NR_PUCCH_TX
        printf("format 4 nrofSymbols >4 and E_init=%d,E = %d\n",E_init,E);
      #endif
944 945 946
    }
    if (nrofSymbols > 9)  {
      E = (add_dmrs == 0)?(E_init*(nrofSymbols-2)/n_SF_PUCCH_s):((E_init*(nrofSymbols-4)/n_SF_PUCCH_s));
947 948 949
      #ifdef DEBUG_NR_PUCCH_TX
        printf("format 4 nrofSymbols >9 and E_init=%d,E = %d\n",E_init,E);
      #endif
950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979
    }
  }
  *M_bit = E;
  int I_seg;
  #ifdef DEBUG_NR_PUCCH_TX
    printf("\t\t [nr_uci_encoding] start function with fmt=%d, encoding A=%d bits into M_bit=%d (where nrofSymbols=%d,nrofPRB=%d)\n",fmt,A,*M_bit,nrofSymbols,nrofPRB);
  #endif

  if (A<=11){
    // procedure in subclause 6.3.1.2.2 (UCI encoded by channel coding of small block lengths -> subclause 6.3.1.3.2)
    // CRC bits are not attached, and coding small block lengths (subclause 5.3.3)
  } else if (A>=12){
    // procedure in subclause 6.3.1.2.1 (UCI encoded by Polar code -> subclause 6.3.1.3.1)
    if ((A>=360 && E>=1088)||(A>=1013)){
      I_seg = 1;
    } else {
      I_seg = 0;
    }
    if (A>=20){
      // parity bits (subclause 5.2.1) computed by setting L=11 and using generator polynomial gCRC11(D) (subclause 5.1)
      L=11;
    } else if (A<=19){
      // parity bits (subclause 5.2.1) computed by setting L=6  and using generator polynomial gCRC6(D)  (subclause 5.1)
      L=6;
    }
    // code block segmentation and CRC attachment is performed according to subclause 5.2.1
    // polar coding subclause 5.3.1
  }
}
//#if 0
980
void nr_generate_pucch2(PHY_VARS_NR_UE *ue,
981
                        uint16_t crnti,
982
                        int32_t **txdataF,
983 984 985 986
                        NR_DL_FRAME_PARMS *frame_parms,
                        PUCCH_CONFIG_DEDICATED *pucch_config_dedicated,
                        uint64_t payload,
                        int16_t amp,
987
                        int nr_tti_tx,
988 989 990
                        uint8_t nrofSymbols,
                        uint8_t startingSymbolIndex,
                        uint8_t nrofPRB,
991
                        uint16_t startingPRB,
992 993
                        uint8_t nr_bit) {
  #ifdef DEBUG_NR_PUCCH_TX
994
    printf("\t [nr_generate_pucch2] start function at slot(nr_tti_tx)=%d  with payload=%d and nr_bit=%d\n",nr_tti_tx, payload, nr_bit);
995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015
  #endif
  // b is the block of bits transmitted on the physical channel after payload coding
  uint64_t b;
  // M_bit is the number of bits of block b (payload after encoding)
  uint16_t M_bit;
  nr_uci_encoding(payload,nr_bit,pucch_format2_nr,0,nrofSymbols,nrofPRB,1,0,0,&b,&M_bit);

  /*
   * Implementing TS 38.211
   * Subclauses 6.3.2.5.1 Scrambling (PUCCH format 2)
   * The block of bits b(0),..., b(M_bit-1 ), where M_bit is the number of bits transmitted on the physical channel,
   * shall be scrambled prior to modulation,
   * resulting in a block of scrambled bits btilde(0),...,btilde(M_bit-1) according to
   *                     btilde(i)=(b(i)+c(i))mod 2
   * where the scrambling sequence c(i) is given by clause 5.2.1.
   * The scrambling sequence generator shall be initialized with c_init=nRNTI*2^15+n_id
   * n_id = {0,1,...,1023}  equals the higher-layer parameter Data-scrambling-Identity if configured
   * n_id = N_ID_cell       if higher layer parameter not configured
   */

  uint8_t *btilde = malloc(sizeof(int8_t)*M_bit);
1016 1017 1018 1019 1020
  // rnti is given by the C-RNTI
  uint16_t rnti=crnti, n_id=0;
#ifdef DEBUG_NR_PUCCH_TX
  printf("\t [nr_generate_pucch2] rnti = %d ,\n",rnti);
#endif
1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064

  /*
   * Implementing TS 38.211 Subclause 6.3.2.5.1 scrambling format 2
   */
  nr_pucch2_3_4_scrambling(M_bit,rnti,n_id,b,btilde);

  /*
   * Implementing TS 38.211 Subclause 6.3.2.5.2 modulation format 2
   * btilde shall be modulated as described in subclause 5.1 using QPSK
   * resulting in a block of complex-valued modulation symbols d(0),...,d(m_symbol) where m_symbol=M_bit/2
   */

//#define ONE_OVER_SQRT2_S 23171 // 32767/sqrt(2) = 23170 (ONE_OVER_SQRT2)

  // complex-valued symbol d(0)
  int16_t *d_re = malloc(sizeof(int16_t)*M_bit);
  int16_t *d_im = malloc(sizeof(int16_t)*M_bit);
  uint16_t m_symbol = (M_bit%2==0) ? M_bit/2 : floor(M_bit/2)+1;
  for (int i=0; i < m_symbol; i++){ // QPSK modulation subclause 5.1.3
    if (((btilde[2*i]&1)==0) && ((btilde[(2*i)+1]&1)==0)) {
      d_re[i] =  (int16_t)(((int32_t)amp*ONE_OVER_SQRT2)>>15);
      d_im[i] =  (int16_t)(((int32_t)amp*ONE_OVER_SQRT2)>>15);
    }
    if (((btilde[2*i]&1)==0) && ((btilde[(2*i)+1]&1)==1)) {
      d_re[i] =  (int16_t)(((int32_t)amp*ONE_OVER_SQRT2)>>15);
      d_im[i] = -(int16_t)(((int32_t)amp*ONE_OVER_SQRT2)>>15);
    }
    if (((btilde[2*i]&1)==1) && ((btilde[(2*i)+1]&1)==0)) {
      d_re[i] = -(int16_t)(((int32_t)amp*ONE_OVER_SQRT2)>>15);
      d_im[i] =  (int16_t)(((int32_t)amp*ONE_OVER_SQRT2)>>15);
    }
    if (((btilde[2*i]&1)==1) && ((btilde[(2*i)+1]&1)==1)) {
      d_re[i] = -(int16_t)(((int32_t)amp*ONE_OVER_SQRT2)>>15);
      d_im[i] = -(int16_t)(((int32_t)amp*ONE_OVER_SQRT2)>>15);
    }
    #ifdef DEBUG_NR_PUCCH_TX
      printf("\t [nr_generate_pucch2] modulation of bit pair btilde(%d,%d), m_symbol=%d, d(%d)=(%d,%d)\n",(btilde[2*i]&1),(btilde[(2*i)+1]&1),m_symbol,i,d_re[i],d_im[i]);
    #endif
  }


  /*
   * Implementing TS 38.211 Subclause 6.3.2.5.3 Mapping to physical resources
   */
1065 1066
  //int32_t *txptr;
  uint32_t re_offset=0;
1067 1068 1069 1070
  uint32_t x1, x2, s=0;
  int i=0;
  int m=0;
  for (int l=0; l<nrofSymbols; l++) {
1071
    x2 = (((1<<17)*((14*nr_tti_tx) + (l+startingSymbolIndex) + 1)*((2*n_id) + 1)) + (2*n_id))%(1<<31); // c_init calculation according to TS38.211 subclause
1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089
    s = lte_gold_generic(&x1, &x2, 1);
    for (int rb=0; rb<nrofPRB; rb++){
      //startingPRB = startingPRB + rb;
      if (((rb+startingPRB) <  (frame_parms->N_RB_DL>>1)) && ((frame_parms->N_RB_DL & 1) == 0)) { // if number RBs in bandwidth is even and current PRB is lower band
        re_offset = ((l+startingSymbolIndex)*frame_parms->ofdm_symbol_size) + (12*(rb+startingPRB)) + frame_parms->first_carrier_offset;
      }
      if (((rb+startingPRB) >= (frame_parms->N_RB_DL>>1)) && ((frame_parms->N_RB_DL & 1) == 0)) { // if number RBs in bandwidth is even and current PRB is upper band
        re_offset = ((l+startingSymbolIndex)*frame_parms->ofdm_symbol_size) + (12*((rb+startingPRB)-(frame_parms->N_RB_DL>>1)));
      }
      if (((rb+startingPRB) <  (frame_parms->N_RB_DL>>1)) && ((frame_parms->N_RB_DL & 1) == 1)) { // if number RBs in bandwidth is odd  and current PRB is lower band
        re_offset = ((l+startingSymbolIndex)*frame_parms->ofdm_symbol_size) + (12*(rb+startingPRB)) + frame_parms->first_carrier_offset;
      }
      if (((rb+startingPRB) >  (frame_parms->N_RB_DL>>1)) && ((frame_parms->N_RB_DL & 1) == 1)) { // if number RBs in bandwidth is odd  and current PRB is upper band
        re_offset = ((l+startingSymbolIndex)*frame_parms->ofdm_symbol_size) + (12*((rb+startingPRB)-(frame_parms->N_RB_DL>>1))) + 6;
      }
      if (((rb+startingPRB) == (frame_parms->N_RB_DL>>1)) && ((frame_parms->N_RB_DL & 1) == 1)) { // if number RBs in bandwidth is odd  and current PRB contains DC
        re_offset = ((l+startingSymbolIndex)*frame_parms->ofdm_symbol_size) + (12*(rb+startingPRB)) + frame_parms->first_carrier_offset;
      }
1090
      //txptr = &txdataF[0][re_offset];
1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101
      int k=0;
      int kk=0;
      for (int n=0; n<12; n++){
        if ((n==6) && ((rb+startingPRB) == (frame_parms->N_RB_DL>>1)) && ((frame_parms->N_RB_DL & 1) == 1)) {
          // if number RBs in bandwidth is odd  and current PRB contains DC, we need to recalculate the offset when n=6 (for second half PRB)
          re_offset = ((l+startingSymbolIndex)*frame_parms->ofdm_symbol_size);
        }
        if (n%3 != 1) { // mapping PUCCH according to TS38.211 subclause 6.3.2.5.3
          ((int16_t *)&txdataF[0][re_offset])[0] = d_re[i+k];
          ((int16_t *)&txdataF[0][re_offset])[1] = d_im[i+k];
          #ifdef DEBUG_NR_PUCCH_TX
1102
            printf("\t [nr_generate_pucch2] (n=%d,i=%d) mapping PUCCH to RE \t amp=%d \tofdm_symbol_size=%d \tN_RB_DL=%d \tfirst_carrier_offset=%d \tz_pucch[%d]=txptr(%d)=(x_n(l=%d,n=%d)=(%d,%d))\n",
1103 1104 1105 1106 1107 1108 1109 1110 1111 1112
                    n,i,amp,frame_parms->ofdm_symbol_size,frame_parms->N_RB_DL,frame_parms->first_carrier_offset,i+k,re_offset,
                    l,n,((int16_t *)&txdataF[0][re_offset])[0],((int16_t *)&txdataF[0][re_offset])[1]);
          #endif
          k++;
        }
        if (n%3 == 1) { // mapping DM-RS signal according to TS38.211 subclause 6.4.1.3.2
          ((int16_t *)&txdataF[0][re_offset])[0] = (int16_t)((int32_t)(amp*ONE_OVER_SQRT2*(1-(2*((uint8_t)((s>>(2*m))&1)))))>>15);
          ((int16_t *)&txdataF[0][re_offset])[1] = (int16_t)((int32_t)(amp*ONE_OVER_SQRT2*(1-(2*((uint8_t)((s>>((2*m)+1))&1)))))>>15);
          m++;
          #ifdef DEBUG_NR_PUCCH_TX
1113
            printf("\t [nr_generate_pucch2] (n=%d,i=%d) mapping DM-RS to RE \t amp=%d \tofdm_symbol_size=%d \tN_RB_DL=%d \tfirst_carrier_offset=%d \tz_dm-rs[%d]=txptr(%d)=(x_n(l=%d,n=%d)=(%d,%d))\n",
1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125
                    n,i,amp,frame_parms->ofdm_symbol_size,frame_parms->N_RB_DL,frame_parms->first_carrier_offset,i+kk,re_offset,
                    l,n,((int16_t *)&txdataF[0][re_offset])[0],((int16_t *)&txdataF[0][re_offset])[1]);
          #endif
          kk++;
        }
        re_offset++;
      }
      i+=8;
    }
  }
}
//#if 0
1126
void nr_generate_pucch3_4(PHY_VARS_NR_UE *ue,
1127
                          uint16_t crnti,
1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142
                          int32_t **txdataF,
                          NR_DL_FRAME_PARMS *frame_parms,
                          pucch_format_nr_t fmt,
                          PUCCH_CONFIG_DEDICATED *pucch_config_dedicated,
                          uint64_t payload,
                          int16_t amp,
                          int nr_tti_tx,
                          uint8_t nrofSymbols,
                          uint8_t startingSymbolIndex,
                          uint8_t nrofPRB,
                          uint16_t startingPRB,
                          uint16_t startingPRB_intraSlotHopping,
                          uint8_t nr_bit,
                          uint8_t occ_length_format4,
                          uint8_t occ_index_format4) {
1143 1144

  #ifdef DEBUG_NR_PUCCH_TX
1145
    printf("\t [nr_generate_pucch3_4] start function at slot(nr_tti_tx)=%d with payload=%d and nr_bit=%d\n", nr_tti_tx, payload, nr_bit);
1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156
  #endif
  // b is the block of bits transmitted on the physical channel after payload coding
  uint64_t b;
  // M_bit is the number of bits of block b (payload after encoding)
  uint16_t M_bit;
  // parameter PUCCH-F4-preDFT-OCC-length set of {2,4} -> to use table -1 or -2
  uint8_t n_SF_PUCCH_s = 2; // in format 4, n_SF_PUCCH_s = {2,4}, provided by higher layer parameter PUCCH-F4-preDFT-OCC-length (in format 3 n_SF_PUCCH_s=1), FIXME!!!
  uint8_t is_pi_over_2_bpsk_enabled = 0; // this value has to be provided by higher layers parameter
  // Intra-slot frequency hopping shall be assumed when the higher-layer parameter intraSlotFrequencyHopping is provided,
  // regardless of whether the frequency-hop distance is zero or not,
  // otherwise no intra-slot frequency hopping shall be assumed
1157
  //uint8_t PUCCH_Frequency_Hopping = 0 ; // from higher layers
1158
  uint8_t intraSlotFrequencyHopping = 0;
1159 1160 1161
  if (startingPRB != startingPRB_intraSlotHopping){
    intraSlotFrequencyHopping=1;
    #ifdef DEBUG_NR_PUCCH_TX
1162
      printf("\t [nr_generate_pucch3_4] intraSlotFrequencyHopping=%d \n",intraSlotFrequencyHopping);
1163 1164
    #endif
  }
1165 1166
  // add_dmrs indicates if we are using or not Additional DM-RS for formats 3 and 4. From higher layers. FIXME!!!
  uint8_t add_dmrs = 0;
1167 1168 1169
  //nrofPRB = 2; // only for test purposes
  if (fmt == pucch_format4_nr) nrofPRB = 1;

1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185
  nr_uci_encoding(payload,nr_bit,fmt,is_pi_over_2_bpsk_enabled,nrofSymbols,nrofPRB,n_SF_PUCCH_s,intraSlotFrequencyHopping,add_dmrs,&b,&M_bit);

  /*
   * Implementing TS 38.211
   * Subclauses 6.3.2.6.1 Scrambling (PUCCH formats 3 and 4)
   * The block of bits b(0),..., b(M_bit-1 ), where M_bit is the number of bits transmitted on the physical channel,
   * shall be scrambled prior to modulation,
   * resulting in a block of scrambled bits btilde(0),...,btilde(M_bit-1) according to
   *                     btilde(i)=(b(i)+c(i))mod 2
   * where the scrambling sequence c(i) is given by clause 5.2.1.
   * The scrambling sequence generator shall be initialized with c_init=nRNTI*2^15+n_id
   * n_id = {0,1,...,1023}  equals the higher-layer parameter Data-scrambling-Identity if configured
   * n_id = N_ID_cell       if higher layer parameter not configured
   */

  uint8_t *btilde = malloc(sizeof(int8_t)*M_bit);
1186 1187 1188 1189 1190
  // rnti is given by the C-RNTI
  uint16_t rnti=crnti, n_id=0;
#ifdef DEBUG_NR_PUCCH_TX
  printf("\t [nr_generate_pucch3_4] rnti = %d ,\n",rnti);
#endif
1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271

  /*
   * Implementing TS 38.211 Subclause 6.3.2.6.1 scrambling formats 3 and 4
   */
  nr_pucch2_3_4_scrambling(M_bit,rnti,n_id,b,btilde);

  /*
   * Implementing TS 38.211 Subclause 6.3.2.6.2 modulation formats 3 and 4
   *
   * Subclause 5.1.1 PI/2-BPSK
   * Subclause 5.1.3 QPSK
   */
  // complex-valued symbol d(0)
  int16_t *d_re = malloc(sizeof(int16_t)*M_bit);
  int16_t *d_im = malloc(sizeof(int16_t)*M_bit);
  uint16_t m_symbol = (M_bit%2==0) ? M_bit/2 : floor(M_bit/2)+1;
  if (is_pi_over_2_bpsk_enabled == 0){
    // using QPSK if PUCCH format 3,4 and pi/2-BPSK is not configured, according to subclause 6.3.2.6.2
    for (int i=0; i < m_symbol; i++){ // QPSK modulation subclause 5.1.3
      if (((btilde[2*i]&1)==0) && ((btilde[(2*i)+1]&1)==0)) {
        d_re[i] =  (int16_t)(((int32_t)amp*ONE_OVER_SQRT2)>>15);
        d_im[i] =  (int16_t)(((int32_t)amp*ONE_OVER_SQRT2)>>15);
      }
      if (((btilde[2*i]&1)==0) && ((btilde[(2*i)+1]&1)==1)) {
        d_re[i] =  (int16_t)(((int32_t)amp*ONE_OVER_SQRT2)>>15);
        d_im[i] = -(int16_t)(((int32_t)amp*ONE_OVER_SQRT2)>>15);
      }
      if (((btilde[2*i]&1)==1) && ((btilde[(2*i)+1]&1)==0)) {
        d_re[i] = -(int16_t)(((int32_t)amp*ONE_OVER_SQRT2)>>15);
        d_im[i] =  (int16_t)(((int32_t)amp*ONE_OVER_SQRT2)>>15);
      }
      if (((btilde[2*i]&1)==1) && ((btilde[(2*i)+1]&1)==1)) {
        d_re[i] = -(int16_t)(((int32_t)amp*ONE_OVER_SQRT2)>>15);
        d_im[i] = -(int16_t)(((int32_t)amp*ONE_OVER_SQRT2)>>15);
      }
    #ifdef DEBUG_NR_PUCCH_TX
      printf("\t [nr_generate_pucch3_4] modulation QPSK of bit pair btilde(%d,%d), m_symbol=%d, d(%d)=(%d,%d)\n",(btilde[2*i]&1),(btilde[(2*i)+1]&1),m_symbol,i,d_re[i],d_im[i]);
    #endif
    }
  }
  if (is_pi_over_2_bpsk_enabled == 1){
    // using PI/2-BPSK if PUCCH format 3,4 and pi/2-BPSK is configured, according to subclause 6.3.2.6.2
    m_symbol = M_bit;
    for (int i=0; i<m_symbol; i++){ // PI/2-BPSK modulation subclause 5.1.1
      if (((btilde[i]&1)==0) && (i%2 == 0)){
        d_re[i] =  (int16_t)(((int32_t)amp*ONE_OVER_SQRT2)>>15);
        d_im[i] =  (int16_t)(((int32_t)amp*ONE_OVER_SQRT2)>>15);
      }
      if (((btilde[i]&1)==0) && (i%2 == 1)){
        d_re[i] = -(int16_t)(((int32_t)amp*ONE_OVER_SQRT2)>>15);
        d_im[i] =  (int16_t)(((int32_t)amp*ONE_OVER_SQRT2)>>15);
      }
      if (((btilde[i]&1)==1) && (i%2 == 0)){
        d_re[i] = -(int16_t)(((int32_t)amp*ONE_OVER_SQRT2)>>15);
        d_im[i] = -(int16_t)(((int32_t)amp*ONE_OVER_SQRT2)>>15);
      }
      if (((btilde[i]&1)==1) && (i%2 == 1)){
        d_re[i] =  (int16_t)(((int32_t)amp*ONE_OVER_SQRT2)>>15);
        d_im[i] = -(int16_t)(((int32_t)amp*ONE_OVER_SQRT2)>>15);
      }
    #ifdef DEBUG_NR_PUCCH_TX
      printf("\t [nr_generate_pucch3_4] modulation PI/2-BPSK of bit btilde(%d), m_symbol=%d, d(%d)=(%d,%d)\n",(btilde[i]&1),m_symbol,i,d_re[i],d_im[i]);
    #endif
    }
  }

  /*
   * Implementing Block-wise spreading subclause 6.3.2.6.3
   */
  // number of PRBs per PUCCH, provided by higher layers parameters PUCCH-F2-number-of-PRBs or PUCCH-F3-number-of-PRBs (for format 4, it is equal to 1)
  // for PUCCH 3 -> nrofPRBs = (2^alpa2 * 3^alpha3 * 5^alpha5)
  // for PUCCH 4 -> nrofPRBs = 1
  // uint8_t nrofPRBs;
  // number of symbols, provided by higher layers parameters PUCCH-F0-F2-number-of-symbols or PUCCH-F1-F3-F4-number-of-symbols
  // uint8_t nrofSymbols;
  // complex-valued symbol d(0)
  int16_t *y_n_re = malloc(sizeof(int16_t)*4*M_bit); // 4 is the maximum number n_SF_PUCCH_s, so is the maximunm size of y_n
  int16_t *y_n_im = malloc(sizeof(int16_t)*4*M_bit);
  // Re part orthogonal sequences w_n(k) for PUCCH format 4 when N_SF_PUCCH4 = 2 (Table 6.3.2.6.3-1)
  // k={0,..11} n={0,1,2,3}
  // parameter PUCCH-F4-preDFT-OCC-index set of {0,1,2,3} -> n
1272
   uint16_t table_6_3_2_6_3_1_Wn_Re[2][12] = {{1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1},
1273 1274 1275
                                              {1, 1, 1, 1, 1, 1,-1,-1,-1,-1,-1,-1}};
  // Im part orthogonal sequences w_n(k) for PUCCH format 4 when N_SF_PUCCH4 = 2 (Table 6.3.2.6.3-1)
  // k={0,..11} n={0,1}
1276
  uint16_t table_6_3_2_6_3_1_Wn_Im[2][12] = {{0,0,0,0,0,0,0,0,0,0,0,0},
1277 1278 1279
                                             {0,0,0,0,0,0,0,0,0,0,0,0}};
  // Re part orthogonal sequences w_n(k) for PUCCH format 4 when N_SF_PUCCH4 = 4 (Table 6.3.2.6.3-2)
  // k={0,..11} n={0,1,2.3}
1280
  uint16_t table_6_3_2_6_3_2_Wn_Re[4][12] = {{1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1},
1281 1282 1283 1284 1285
                                             {1, 1, 1, 0, 0, 0,-1,-1,-1, 0, 0, 0},
                                             {1, 1, 1,-1,-1,-1, 1, 1, 1,-1,-1,-1},
                                             {1, 1, 1, 0, 0, 0,-1,-1,-1, 0, 0, 0}};
  // Im part orthogonal sequences w_n(k) for PUCCH format 4 when N_SF_PUCCH4 = 4 (Table 6.3.2.6.3-2)
  // k={0,..11} n={0,1,2,3}
1286 1287 1288 1289
  uint16_t table_6_3_2_6_3_2_Wn_Im[4][12] = {{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
                                             {0, 0, 0,-1,-1,-1, 0, 0, 0, 1, 1, 1},
                                             {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
                                             {0, 0, 0, 1, 1, 1, 0, 0, 0,-1,-1,-1}};
1290
  //uint8_t occ_Length = occ_length_format4; // higher layer parameter occ-Length
1291
  uint8_t occ_Index  = occ_index_format4;  // higher layer parameter occ-Index
1292
//occ_Index = 1; //only for testing purposes; to be removed FIXME!!!
1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310
  if (fmt == pucch_format3_nr){ // no block-wise spreading for format 3
    n_SF_PUCCH_s = 1;
    for (int l=0; l < floor(m_symbol/(12*nrofPRB)); l++){
      for (int k=0; k < (12*nrofPRB); k++){
        y_n_re[l*(12*nrofPRB)+k] = d_re[l*(12*nrofPRB)+k];
        y_n_im[l*(12*nrofPRB)+k] = d_im[l*(12*nrofPRB)+k];
        #ifdef DEBUG_NR_PUCCH_TX
          printf("\t [nr_generate_pucch3_4] block-wise spreading for format 3 (no block-wise spreading): (l,k)=(%d,%d)\ty_n(%d)   = \t(d_re=%d, d_im=%d)\n",
                  l,k,l*(12*nrofPRB)+k,d_re[l*(12*nrofPRB)+k],d_im[l*(12*nrofPRB)+k]);
        #endif
      }
    }
  }
  if (fmt == pucch_format4_nr){
    nrofPRB = 1;
    for (int l=0; l < floor((n_SF_PUCCH_s*m_symbol)/(12*nrofPRB)); l++){
      for (int k=0; k < (12*nrofPRB); k++){
        if (n_SF_PUCCH_s == 2){
1311 1312 1313 1314
          y_n_re[l*(12*nrofPRB)+k] = (uint16_t)(((uint32_t)d_re[l*(12*nrofPRB/n_SF_PUCCH_s)+k%(12*nrofPRB/n_SF_PUCCH_s)] * table_6_3_2_6_3_1_Wn_Re[occ_Index][k])
                                              - ((uint32_t)d_im[l*(12*nrofPRB/n_SF_PUCCH_s)+k%(12*nrofPRB/n_SF_PUCCH_s)] * table_6_3_2_6_3_1_Wn_Im[occ_Index][k]));
          y_n_im[l*(12*nrofPRB)+k] = (uint16_t)(((uint32_t)d_im[l*(12*nrofPRB/n_SF_PUCCH_s)+k%(12*nrofPRB/n_SF_PUCCH_s)] * table_6_3_2_6_3_1_Wn_Re[occ_Index][k])
                                              + ((uint32_t)d_re[l*(12*nrofPRB/n_SF_PUCCH_s)+k%(12*nrofPRB/n_SF_PUCCH_s)] * table_6_3_2_6_3_1_Wn_Im[occ_Index][k]));
1315
          #ifdef DEBUG_NR_PUCCH_TX
1316 1317 1318 1319 1320 1321
            printf("\t [nr_generate_pucch3_4] block-wise spreading for format 4 (n_SF_PUCCH_s 2) (occ_Index=%d): (l,k)=(%d,%d)\ty_n(%d)   = \t(d_re=%d, d_im=%d)\n",
                    occ_Index,l,k,l*(12*nrofPRB)+k,y_n_re[l*(12*nrofPRB)+k],y_n_im[l*(12*nrofPRB)+k]);
//            printf("\t\t d_re[l*(12*nrofPRB/n_SF_PUCCH_s)+k%(12*nrofPRB/n_SF_PUCCH_s)] = %d\n",d_re[l*(12*nrofPRB/n_SF_PUCCH_s)+k%(12*nrofPRB/n_SF_PUCCH_s)]);
//            printf("\t\t d_im[l*(12*nrofPRB/n_SF_PUCCH_s)+k%(12*nrofPRB/n_SF_PUCCH_s)] = %d\n",d_im[l*(12*nrofPRB/n_SF_PUCCH_s)+k%(12*nrofPRB/n_SF_PUCCH_s)]);
//            printf("\t\t table_6_3_2_6_3_1_Wn_Re[%d][%d] = %d\n",occ_Index,k,table_6_3_2_6_3_1_Wn_Re[occ_Index][k]);
//            printf("\t\t table_6_3_2_6_3_1_Wn_Im[%d][%d] = %d\n",occ_Index,k,table_6_3_2_6_3_1_Wn_Im[occ_Index][k]);
1322 1323 1324
          #endif
        }
        if (n_SF_PUCCH_s == 4){
1325 1326 1327 1328
          y_n_re[l*(12*nrofPRB)+k] = (uint16_t)(((uint32_t)d_re[l*(12*nrofPRB/n_SF_PUCCH_s)+k%(12*nrofPRB/n_SF_PUCCH_s)] * table_6_3_2_6_3_2_Wn_Re[occ_Index][k])
                                              - ((uint32_t)d_im[l*(12*nrofPRB/n_SF_PUCCH_s)+k%(12*nrofPRB/n_SF_PUCCH_s)] * table_6_3_2_6_3_2_Wn_Im[occ_Index][k]));
          y_n_im[l*(12*nrofPRB)+k] = (uint16_t)(((uint32_t)d_im[l*(12*nrofPRB/n_SF_PUCCH_s)+k%(12*nrofPRB/n_SF_PUCCH_s)] * table_6_3_2_6_3_2_Wn_Re[occ_Index][k])
                                              + ((uint32_t)d_re[l*(12*nrofPRB/n_SF_PUCCH_s)+k%(12*nrofPRB/n_SF_PUCCH_s)] * table_6_3_2_6_3_2_Wn_Im[occ_Index][k]));
1329
          #ifdef DEBUG_NR_PUCCH_TX
1330 1331
            printf("\t [nr_generate_pucch3_4] block-wise spreading for format 4 (n_SF_PUCCH_s 4) (occ_Index=%d): (l,k)=(%d,%d)\ty_n(%d)   = \t(d_re=%d, d_im=%d)\n",
                    occ_Index,l,k,l*(12*nrofPRB)+k,y_n_re[l*(12*nrofPRB)+k],y_n_im[l*(12*nrofPRB)+k]);
1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342
          #endif
        }
      }
    }
  }

  /*
   * Implementing Transform pre-coding subclause 6.3.2.6.4
   */
  int16_t *z_re = malloc(sizeof(int16_t)*4*M_bit); // 4 is the maximum number n_SF_PUCCH_s
  int16_t *z_im = malloc(sizeof(int16_t)*4*M_bit);
1343
  #define M_PI 3.14159265358979323846 // pi
1344 1345 1346 1347 1348
  //int16_t inv_sqrt_nrofPRBs = (int16_t)round(32767/sqrt(12*nrofPRB));
  for (int l=0; l<floor((n_SF_PUCCH_s*m_symbol)/(12*nrofPRB)); l++){
    for (int k=0; k<(12*nrofPRB); k++){
      z_re[l*(12*nrofPRB)+k] = 0;
      z_im[l*(12*nrofPRB)+k] = 0;
1349 1350
//      int16_t z_re_tmp[240] = {0};
//      int16_t z_im_tmp[240] = {0};
1351 1352
      for (int m=0; m<(12*nrofPRB); m++){
        //z_re[l*(12*nrofPRB)+k] = y_n_re[l*(12*nrofPRB)+m] * (int16_t)(round(32767*cos((2*M_PI*m*k)/(12*nrofPRB))));
1353 1354 1355 1356
//        z_re_tmp[m] = (int16_t)(((int32_t)round(32767/sqrt(12*nrofPRB))*(int16_t)((((int32_t)y_n_re[l*(12*nrofPRB)+m] * (int16_t)round(32767 * cos(2*M_PI*m*k/(12*nrofPRB))))>>15)
//                + (((int32_t)y_n_im[l*(12*nrofPRB)+m] * (int16_t)round(32767 * sin(2*M_PI*m*k/(12*nrofPRB))))>>15)))>>15);
//        z_im_tmp[m] = (int16_t)(((int32_t)round(32767/sqrt(12*nrofPRB))*(int16_t)((((int32_t)y_n_im[l*(12*nrofPRB)+m] * (int16_t)round(32767 * cos(2*M_PI*m*k/(12*nrofPRB))))>>15)
//                - (((int32_t)y_n_re[l*(12*nrofPRB)+m] * (int16_t)round(32767 * sin(2*M_PI*m*k/(12*nrofPRB))))>>15)))>>15);
1357 1358 1359 1360 1361 1362
        z_re[l*(12*nrofPRB)+k] = z_re[l*(12*nrofPRB)+k]
                               + (int16_t)(((int32_t)round(32767/sqrt(12*nrofPRB))*(int16_t)((((int32_t)y_n_re[l*(12*nrofPRB)+m] * (int16_t)round(32767 * cos(2*M_PI*m*k/(12*nrofPRB))))>>15)
                                                                                           + (((int32_t)y_n_im[l*(12*nrofPRB)+m] * (int16_t)round(32767 * sin(2*M_PI*m*k/(12*nrofPRB))))>>15)))>>15);
        z_im[l*(12*nrofPRB)+k] = z_im[l*(12*nrofPRB)+k]
                               + (int16_t)(((int32_t)round(32767/sqrt(12*nrofPRB))*(int16_t)((((int32_t)y_n_im[l*(12*nrofPRB)+m] * (int16_t)round(32767 * cos(2*M_PI*m*k/(12*nrofPRB))))>>15)
                                                                                           - (((int32_t)y_n_re[l*(12*nrofPRB)+m] * (int16_t)round(32767 * sin(2*M_PI*m*k/(12*nrofPRB))))>>15)))>>15);
1363
        #ifdef DEBUG_NR_PUCCH_TX
1364 1365 1366 1367
//        printf("\t\t z_re_tmp[%d] = %d\n",m,z_re_tmp[m]);
//        printf("\t\t z_im_tmp[%d] = %d\n",m,z_im_tmp[m]);
//          printf("\t [nr_generate_pucch3_4] transform precoding for formats 3 and 4: (l,k,m)=(%d,%d,%d)\tz(%d)   = \t(%d, %d)\n",
//                  l,k,m,l*(12*nrofPRB)+k,z_re[l*(12*nrofPRB)+k],z_im[l*(12*nrofPRB)+k]);
1368 1369 1370
        #endif
      }
      #ifdef DEBUG_NR_PUCCH_TX
1371
        printf("\t [nr_generate_pucch3_4] transform precoding for formats 3 and 4: (l,k)=(%d,%d)\tz(%d)   = \t(%d, %d)\n",
1372 1373 1374 1375 1376 1377
                l,k,l*(12*nrofPRB)+k,z_re[l*(12*nrofPRB)+k],z_im[l*(12*nrofPRB)+k]);
      #endif
    }
  }

  /*
1378
   * Implementing TS 38.211 Subclauses 6.3.2.5.3 and 6.3.2.6.5 Mapping to physical resources
1379 1380
   */
  // the value of u,v (delta always 0 for PUCCH) has to be calculated according to TS 38.211 Subclause 6.3.2.2.1
1381
  uint8_t u=0,v=0;//,delta=0;
1382 1383 1384 1385 1386 1387 1388
  // if frequency hopping is disabled, intraSlotFrequencyHopping is not provided
  //              n_hop = 0
  // if frequency hopping is enabled,  intraSlotFrequencyHopping is     provided
  //              n_hop = 0 for first hop
  //              n_hop = 1 for second hop
  uint8_t n_hop = 0;
  // lnormal is the OFDM symbol number in the PUCCH transmission where l=0 corresponds to the first OFDM symbol of the PUCCH transmission
1389
  //uint8_t lnormal = 0 ;
1390
  // lprime is the index of the OFDM symbol in the slot that corresponds to the first OFDM symbol of the PUCCH transmission in the slot given by [5, TS 38.213]
1391
  //uint8_t lprime = startingSymbolIndex;
1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407
  // m0 is the cyclic shift index calculated depending on the Orthogonal sequence index n, according to table 6.4.1.3.3.1-1 from TS 38.211 subclause 6.4.1.3.3.1
  uint8_t m0;
  uint8_t mcs=0;
  if (fmt == pucch_format3_nr) m0 = 0;
  if (fmt == pucch_format4_nr) {
    if (n_SF_PUCCH_s == 2) {
      m0 = (occ_Index == 0) ? 0 : 6;
    }
    if (n_SF_PUCCH_s == 4) {
      m0 = (occ_Index == 3) ? 9 : ((occ_Index == 2) ? 3 : ((occ_Index == 1) ? 6 : 0));
    }
  }
  double alpha;
  uint8_t N_ZC = 12*nrofPRB;
  int16_t *r_u_v_base_re        = malloc(sizeof(int16_t)*12*nrofPRB);
  int16_t *r_u_v_base_im        = malloc(sizeof(int16_t)*12*nrofPRB);
1408 1409
  //int16_t *r_u_v_alpha_delta_re = malloc(sizeof(int16_t)*12*nrofPRB);
  //int16_t *r_u_v_alpha_delta_im = malloc(sizeof(int16_t)*12*nrofPRB);
1410

1411
  // Next we proceed to mapping to physical resources according to TS 38.211, subclause 6.3.2.6.5 dor PUCCH formats 3 and 4 and subclause 6.4.1.3.3.2 for DM-RS
1412 1413
  //int32_t *txptr;
  uint32_t re_offset=0;
1414
  //uint32_t x1, x2, s=0;
1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431
  // intraSlotFrequencyHopping
  // uint8_t intraSlotFrequencyHopping = 0;
  uint8_t table_6_4_1_3_3_2_1_dmrs_positions[11][14] ={
  {(intraSlotFrequencyHopping==0)?0:1,(intraSlotFrequencyHopping==0)?1:0,(intraSlotFrequencyHopping==0)?0:1,0,0,0,0,0,0,0,0,0,0,0}, // PUCCH length = 4
  {1,0,0,1,0,0,0,0,0,0,0,0,0,0}, // PUCCH length = 5
  {0,1,0,0,1,0,0,0,0,0,0,0,0,0}, // PUCCH length = 6
  {0,1,0,0,1,0,0,0,0,0,0,0,0,0}, // PUCCH length = 7
  {0,1,0,0,0,1,0,0,0,0,0,0,0,0}, // PUCCH length = 8
  {0,1,0,0,0,0,1,0,0,0,0,0,0,0}, // PUCCH length = 9
  {0,(add_dmrs==0?0:1),(add_dmrs==0?1:0),(add_dmrs==0?0:1),0,0,(add_dmrs==0?0:1),(add_dmrs==0?1:0),(add_dmrs==0?0:1),0,0,0,0,0}, // PUCCH length = 10
  {0,(add_dmrs==0?0:1),(add_dmrs==0?1:0),(add_dmrs==0?0:1),0,0,(add_dmrs==0?0:1),(add_dmrs==0?1:0),0,(add_dmrs==0?0:1),0,0,0,0}, // PUCCH length = 11
  {0,(add_dmrs==0?0:1),(add_dmrs==0?1:0),0,(add_dmrs==0?0:1),0,0,(add_dmrs==0?0:1),(add_dmrs==0?1:0),0,(add_dmrs==0?0:1),0,0,0}, // PUCCH length = 12
  {0,(add_dmrs==0?0:1),(add_dmrs==0?1:0),0,(add_dmrs==0?0:1),0,0,(add_dmrs==0?0:1),0,(add_dmrs==0?1:0),0,(add_dmrs==0?0:1),0,0}, // PUCCH length = 13
  {0,(add_dmrs==0?0:1),0,(add_dmrs==0?1:0),0,(add_dmrs==0?0:1),0,0,(add_dmrs==0?0:1),0,(add_dmrs==0?1:0),0,(add_dmrs==0?0:1),0}  // PUCCH length = 14
  };
  uint16_t k=0;
  for (int l=0; l<nrofSymbols; l++) {
1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476

    if ((intraSlotFrequencyHopping == 1) && (l >= (int)floor(nrofSymbols/2))) n_hop = 1; // n_hop = 1 for second hop
    nr_group_sequence_hopping(ue,n_hop,nr_tti_tx,&u,&v); // calculating u and v value


    // Next we proceed to calculate base sequence for DM-RS signal, according to TS 38.211 subclause 6.4.1.33
    if (nrofPRB >= 3) { // TS 38.211 subclause 5.2.2.1 (Base sequences of length 36 or larger) applies
      int i = 4;
      while (list_of_prime_numbers[i] < (12*nrofPRB)) i++;
      N_ZC = list_of_prime_numbers[i+1]; // N_ZC is given by the largest prime number such that N_ZC < (12*nrofPRB)
      double q_base = (N_ZC*(u+1))/31;
      int8_t q = (uint8_t)floor(q_base + (1/2));
      q = ((uint8_t)floor(2*q_base)%2 == 0 ? q+v : q-v);
      for (int n=0; n<(12*nrofPRB); n++){
        r_u_v_base_re[n] =  (int16_t)(((int32_t)amp*(int16_t)(32767*cos(M_PI*q*(n%N_ZC)*((n%N_ZC)+1)/N_ZC)))>>15);
        r_u_v_base_im[n] = -(int16_t)(((int32_t)amp*(int16_t)(32767*sin(M_PI*q*(n%N_ZC)*((n%N_ZC)+1)/N_ZC)))>>15);
        #ifdef DEBUG_NR_PUCCH_TX
          printf("\t [nr_generate_pucch3_4] generation DM-RS base sequence when nrofPRB=%d >= 3: r_u_v_base[n=%d]=(%d,%d)\n",
                  nrofPRB,n,r_u_v_base_re[n],r_u_v_base_im[n]);
        #endif
      }
    }
    if (nrofPRB == 2) { // TS 38.211 subclause 5.2.2.2 (Base sequences of length less than 36 using table 5.2.2.2-4) applies
      for (int n=0; n<(12*nrofPRB); n++){
        r_u_v_base_re[n] =  (int16_t)(((int32_t)amp*table_5_2_2_2_4_Re[u][n])>>15);
        r_u_v_base_im[n] =  (int16_t)(((int32_t)amp*table_5_2_2_2_4_Im[u][n])>>15);
        #ifdef DEBUG_NR_PUCCH_TX
          printf("\t [nr_generate_pucch3_4] generation DM-RS base sequence when nrofPRB=%d == 2: r_u_v_base[n=%d]=(%d,%d)\n",
                  nrofPRB,n,r_u_v_base_re[n],r_u_v_base_im[n]);
        #endif
      }
    }
    if (nrofPRB == 1) { // TS 38.211 subclause 5.2.2.2 (Base sequences of length less than 36 using table 5.2.2.2-2) applies
      for (int n=0; n<(12*nrofPRB); n++){
        r_u_v_base_re[n] =  (int16_t)(((int32_t)amp*table_5_2_2_2_2_Re[u][n])>>15);
        r_u_v_base_im[n] =  (int16_t)(((int32_t)amp*table_5_2_2_2_2_Im[u][n])>>15);
        #ifdef DEBUG_NR_PUCCH_TX
          printf("\t [nr_generate_pucch3_4] generation DM-RS base sequence when nrofPRB=%d == 1: r_u_v_base[n=%d]=(%d,%d)\n",
                  nrofPRB,n,r_u_v_base_re[n],r_u_v_base_im[n]);
        #endif
      }
    }



1477
    uint16_t j=0;
1478
    alpha = nr_cyclic_shift_hopping(ue,m0,mcs,l,startingSymbolIndex,nr_tti_tx);
1479
    for (int rb=0; rb<nrofPRB; rb++){
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      if ((intraSlotFrequencyHopping == 1) && (l<floor(nrofSymbols/2))) { // intra-slot hopping enabled, we need to calculate new offset PRB
        startingPRB = startingPRB + startingPRB_intraSlotHopping;
      }
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      //startingPRB = startingPRB + rb;
      if (((rb+startingPRB) <  (frame_parms->N_RB_DL>>1)) && ((frame_parms->N_RB_DL & 1) == 0)) { // if number RBs in bandwidth is even and current PRB is lower band
        re_offset = ((l+startingSymbolIndex)*frame_parms->ofdm_symbol_size) + (12*(rb+startingPRB)) + frame_parms->first_carrier_offset;
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        #ifdef DEBUG_NR_PUCCH_TX
          printf("1   ");
        #endif
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      }
      if (((rb+startingPRB) >= (frame_parms->N_RB_DL>>1)) && ((frame_parms->N_RB_DL & 1) == 0)) { // if number RBs in bandwidth is even and current PRB is upper band
        re_offset = ((l+startingSymbolIndex)*frame_parms->ofdm_symbol_size) + (12*((rb+startingPRB)-(frame_parms->N_RB_DL>>1)));
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        #ifdef DEBUG_NR_PUCCH_TX
          printf("2   ");
        #endif
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      }
      if (((rb+startingPRB) <  (frame_parms->N_RB_DL>>1)) && ((frame_parms->N_RB_DL & 1) == 1)) { // if number RBs in bandwidth is odd  and current PRB is lower band
        re_offset = ((l+startingSymbolIndex)*frame_parms->ofdm_symbol_size) + (12*(rb+startingPRB)) + frame_parms->first_carrier_offset;
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        #ifdef DEBUG_NR_PUCCH_TX
          printf("3   ");
        #endif
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      }
      if (((rb+startingPRB) >  (frame_parms->N_RB_DL>>1)) && ((frame_parms->N_RB_DL & 1) == 1)) { // if number RBs in bandwidth is odd  and current PRB is upper band
        re_offset = ((l+startingSymbolIndex)*frame_parms->ofdm_symbol_size) + (12*((rb+startingPRB)-(frame_parms->N_RB_DL>>1))) + 6;
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        #ifdef DEBUG_NR_PUCCH_TX
          printf("4   ");
        #endif
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      }
      if (((rb+startingPRB) == (frame_parms->N_RB_DL>>1)) && ((frame_parms->N_RB_DL & 1) == 1)) { // if number RBs in bandwidth is odd  and current PRB contains DC
        re_offset = ((l+startingSymbolIndex)*frame_parms->ofdm_symbol_size) + (12*(rb+startingPRB)) + frame_parms->first_carrier_offset;
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        #ifdef DEBUG_NR_PUCCH_TX
          printf("5   ");
        #endif
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      }
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      #ifdef DEBUG_NR_PUCCH_TX
        printf("re_offset=%d,(rb+startingPRB)=%d\n",re_offset,(rb+startingPRB));
      #endif
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      //txptr = &txdataF[0][re_offset];
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      for (int n=0; n<12; n++){
        if ((n==6) && ((rb+startingPRB) == (frame_parms->N_RB_DL>>1)) && ((frame_parms->N_RB_DL & 1) == 1)) {
          // if number RBs in bandwidth is odd  and current PRB contains DC, we need to recalculate the offset when n=6 (for second half PRB)
          re_offset = ((l+startingSymbolIndex)*frame_parms->ofdm_symbol_size);
        }
        if (table_6_4_1_3_3_2_1_dmrs_positions[nrofSymbols-4][l] == 0) { // mapping PUCCH according to TS38.211 subclause 6.3.2.5.3
          ((int16_t *)&txdataF[0][re_offset])[0] = z_re[n+k];
          ((int16_t *)&txdataF[0][re_offset])[1] = z_im[n+k];
          #ifdef DEBUG_NR_PUCCH_TX
            printf("\t [nr_generate_pucch3_4] (l=%d,rb=%d,n=%d,k=%d) mapping PUCCH to RE \t amp=%d \tofdm_symbol_size=%d \tN_RB_DL=%d \tfirst_carrier_offset=%d \tz_pucch[%d]=txptr(%d)=(z(l=%d,n=%d)=(%d,%d))\n",
                    l,rb,n,k,amp,frame_parms->ofdm_symbol_size,frame_parms->N_RB_DL,frame_parms->first_carrier_offset,n+k,re_offset,
                    l,n,((int16_t *)&txdataF[0][re_offset])[0],((int16_t *)&txdataF[0][re_offset])[1]);
          #endif
        }
        if (table_6_4_1_3_3_2_1_dmrs_positions[nrofSymbols-4][l] == 1) { // mapping DM-RS signal according to TS38.211 subclause 6.4.1.3.2
          ((int16_t *)&txdataF[0][re_offset])[0] = (int16_t)((((int32_t)(32767*cos(alpha*((n+j)%N_ZC)))*r_u_v_base_re[n+j])>>15)
                                                           - (((int32_t)(32767*sin(alpha*((n+j)%N_ZC)))*r_u_v_base_im[n+j])>>15));
          ((int16_t *)&txdataF[0][re_offset])[1] = (int16_t)((((int32_t)(32767*cos(alpha*((n+j)%N_ZC)))*r_u_v_base_im[n+j])>>15)
                                                           + (((int32_t)(32767*sin(alpha*((n+j)%N_ZC)))*r_u_v_base_re[n+j])>>15));
          #ifdef DEBUG_NR_PUCCH_TX
1538
            printf("\t [nr_generate_pucch3_4] (l=%d,rb=%d,n=%d,j=%d) mapping DM-RS to RE \t amp=%d \tofdm_symbol_size=%d \tN_RB_DL=%d \tfirst_carrier_offset=%d \tz_dm-rs[%d]=txptr(%d)=(r_u_v(l=%d,n=%d)=(%d,%d))\n",
1539
                    l,rb,n,j,amp,frame_parms->ofdm_symbol_size,frame_parms->N_RB_DL,frame_parms->first_carrier_offset,n+j,re_offset,
1540
                    l,n,((int16_t *)&txdataF[0][re_offset])[0],((int16_t *)&txdataF[0][re_offset])[1]);
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          #endif
        }
        re_offset++;
      }
      if (table_6_4_1_3_3_2_1_dmrs_positions[nrofSymbols-4][l] == 0) k+=12;
      if (table_6_4_1_3_3_2_1_dmrs_positions[nrofSymbols-4][l] == 1) j+=12;
    }
  }

}