ulsim.c 57.2 KB
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/*******************************************************************************

  Eurecom OpenAirInterface
  Copyright(c) 1999 - 2014 Eurecom

  This program is free software; you can redistribute it and/or modify it
  under the terms and conditions of the GNU General Public License,
  version 2, as published by the Free Software Foundation.

  This program is distributed in the hope it will be useful, but WITHOUT
  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  more details.

  You should have received a copy of the GNU General Public License along with
  this program; if not, write to the Free Software Foundation, Inc.,
  51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.

  The full GNU General Public License is included in this distribution in
  the file called "COPYING".

  Contact Information
  Openair Admin: openair_admin@eurecom.fr
  Openair Tech : openair_tech@eurecom.fr
  Forums       : http://forums.eurecom.fsr/openairinterface
  Address      : Eurecom, Compus SophiaTech 450, route des chappes, 06451 Biot, France

*******************************************************************************/

/*! \file ulsim.c
 \brief Top-level DL simulator
 \author R. Knopp
 \date 2011
 \version 0.1
 \company Eurecom
 \email: knopp@eurecom.fr
 \note
 \warning
*/

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#include <string.h>
#include <math.h>
#include <unistd.h>
#include "SIMULATION/TOOLS/defs.h"
#include "PHY/types.h"
#include "PHY/defs.h"
#include "PHY/vars.h"
#include "MAC_INTERFACE/vars.h"

#include "ARCH/CBMIMO1/DEVICE_DRIVER/vars.h"
#include "SCHED/defs.h"
#include "SCHED/vars.h"
#include "LAYER2/MAC/vars.h"
#include "OCG_vars.h"

#ifdef XFORMS
#include "PHY/TOOLS/lte_phy_scope.h"
#endif

extern unsigned short dftsizes[33];
extern short *ul_ref_sigs[30][2][33];
//#define AWGN
//#define NO_DCI

#define BW 7.68
//#define ABSTRACTION
//#define PERFECT_CE

/*
  #define RBmask0 0x00fc00fc
  #define RBmask1 0x0
  #define RBmask2 0x0
  #define RBmask3 0x0
*/
PHY_VARS_eNB *PHY_vars_eNB;
PHY_VARS_UE *PHY_vars_UE;

#define MCS_COUNT 23//added for PHY abstraction

channel_desc_t *eNB2UE[NUMBER_OF_eNB_MAX][NUMBER_OF_UE_MAX];
channel_desc_t *UE2eNB[NUMBER_OF_UE_MAX][NUMBER_OF_eNB_MAX];
//Added for PHY abstraction
node_desc_t *enb_data[NUMBER_OF_eNB_MAX]; 
node_desc_t *ue_data[NUMBER_OF_UE_MAX];
//double sinr_bler_map[MCS_COUNT][2][16];

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extern uint16_t beta_ack[16],beta_ri[16],beta_cqi[16];
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//extern  char* namepointer_chMag ;


#ifdef XFORMS
FD_lte_phy_scope_enb *form_enb;
char title[255];
#endif

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void lte_param_init(unsigned char N_tx, unsigned char N_rx,unsigned char transmission_mode,uint8_t extended_prefix_flag,uint8_t N_RB_DL,uint8_t frame_type,uint8_t tdd_config,uint8_t osf) {
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  LTE_DL_FRAME_PARMS *lte_frame_parms;

  printf("Start lte_param_init\n");
  PHY_vars_eNB = malloc(sizeof(PHY_VARS_eNB));
  PHY_vars_UE = malloc(sizeof(PHY_VARS_UE));
  //PHY_config = malloc(sizeof(PHY_CONFIG));
  mac_xface = malloc(sizeof(MAC_xface));

  randominit(0);
  set_taus_seed(0);
  
  lte_frame_parms = &(PHY_vars_eNB->lte_frame_parms);

  lte_frame_parms->frame_type         = frame_type;
  lte_frame_parms->tdd_config         = tdd_config;
  lte_frame_parms->N_RB_DL            = N_RB_DL;   //50 for 10MHz and 25 for 5 MHz
  lte_frame_parms->N_RB_UL            = N_RB_DL;   
  lte_frame_parms->Ncp                = extended_prefix_flag;
  lte_frame_parms->Ncp_UL             = extended_prefix_flag;
  lte_frame_parms->Nid_cell           = 10;
  lte_frame_parms->nushift            = 0;
  lte_frame_parms->nb_antennas_tx     = N_tx;
  lte_frame_parms->nb_antennas_rx     = N_rx;
  //  lte_frame_parms->Csrs = 2;
  //  lte_frame_parms->Bsrs = 0;
  //  lte_frame_parms->kTC = 0;
  //  lte_frame_parms->n_RRC = 0;
  lte_frame_parms->mode1_flag = (transmission_mode == 1)? 1 : 0;
  lte_frame_parms->pusch_config_common.ul_ReferenceSignalsPUSCH.cyclicShift = 0;//n_DMRS1 set to 0

  init_frame_parms(lte_frame_parms,osf);
  
  //copy_lte_parms_to_phy_framing(lte_frame_parms, &(PHY_config->PHY_framing));
  
  phy_init_top(lte_frame_parms); //allocation
  
  lte_frame_parms->twiddle_fft      = twiddle_fft;
  lte_frame_parms->twiddle_ifft     = twiddle_ifft;
  lte_frame_parms->rev              = rev;
  
  PHY_vars_UE->lte_frame_parms = *lte_frame_parms;
  
  phy_init_lte_top(lte_frame_parms);

  phy_init_lte_ue(PHY_vars_UE,1,0);

  phy_init_lte_eNB(PHY_vars_eNB,0,0,0);

  printf("Done lte_param_init\n");


}




#define UL_RB_ALLOC 0x1ff;




int main(int argc, char **argv) {

  char c;
  int i,j,aa,u;

  int aarx,aatx;
  double channelx,channely;
  double sigma2, sigma2_dB=10,SNR,SNR2,snr0=-2.0,snr1,SNRmeas,rate,saving_bler;
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  double input_snr_step=.2,snr_int=30;
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  double blerr;

  //int **txdataF, **txdata;

  int **txdata;

  LTE_DL_FRAME_PARMS *frame_parms;
  double **s_re,**s_im,**r_re,**r_im;
  double forgetting_factor=0.0; //in [0,1] 0 means a new channel every time, 1 means keep the same channel
  double iqim=0.0;
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  uint8_t extended_prefix_flag=0;
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  int cqi_flag=0,cqi_error,cqi_errors,ack_errors,cqi_crc_falsepositives,cqi_crc_falsenegatives;
  int ch_realization;
  int eNB_id = 0;
  int chMod = 0 ;
  int UE_id = 0;
  unsigned char nb_rb=25,first_rb=0,mcs=0,round=0,bundling_flag=1;
  unsigned char l;

  unsigned char awgn_flag = 0 ;
  SCM_t channel_model=Rice1;


  unsigned char *input_buffer,harq_pid;
  unsigned short input_buffer_length;
  unsigned int ret;
  unsigned int coded_bits_per_codeword,nsymb;
  int subframe=3;
  unsigned int tx_lev=0,tx_lev_dB,trials,errs[4]={0,0,0,0},round_trials[4]={0,0,0,0};
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  uint8_t transmission_mode=1,n_rx=1,n_tx=1;
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  FILE *bler_fd=NULL;
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  char bler_fname[512];
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  FILE *time_meas_fd=NULL;
  char time_meas_fname[256];
 
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  FILE *input_fdUL=NULL,*trch_out_fdUL=NULL;
  //  unsigned char input_file=0;
  char input_val_str[50],input_val_str2[50];
 
  //  FILE *rx_frame_file;
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  FILE *csv_fdUL=NULL;
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  FILE *fperen=NULL;
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  char fperen_name[512];  
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  FILE *fmageren=NULL;
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  char fmageren_name[512];
  
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  FILE *flogeren=NULL;
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  char flogeren_name[512];

  /* FILE *ftxlev;
     char ftxlev_name[512];
  */
  
  char csv_fname[512];
  int n_frames=5000;
  int n_ch_rlz = 1;
  int abstx = 0; 
  int hold_channel=0; 
  channel_desc_t *UE2eNB;

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  uint8_t control_only_flag = 0;
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  int delay = 0;	
  double maxDoppler = 0.0;	
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  uint8_t srs_flag = 0;
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  uint8_t N_RB_DL=25,osf=1;
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  uint8_t cyclic_shift = 0;
  uint8_t cooperation_flag = 0; //0 no cooperation, 1 delay diversity, 2 Alamouti
  uint8_t beta_ACK=0,beta_RI=0,beta_CQI=2;
  uint8_t tdd_config=3,frame_type=FDD;
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  uint8_t N0=30;
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  double tx_gain=1.0;
  double cpu_freq_GHz;
  int avg_iter,iter_trials;

  uint32_t UL_alloc_pdu;
  int s,Kr,Kr_bytes;
  int dump_perf=0;
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  int test_perf=0;
  
  double effective_rate=0.0;
  char channel_model_input[10];
  
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  uint8_t max_turbo_iterations=4;
  uint8_t llr8_flag=0;
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  int nb_rb_set = 0;
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  opp_enabled=1; // to enable the time meas

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  cpu_freq_GHz = (double)get_cpu_freq_GHz();
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  printf("Detected cpu_freq %f GHz\n",cpu_freq_GHz);


  logInit();

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  while ((c = getopt (argc, argv, "hapbm:n:Y:X:x:s:w:e:q:d:D:O:c:r:i:f:y:c:oA:C:R:g:N:l:S:T:QB:PI:L")) != -1) {
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    switch (c) {
    case 'a':
      channel_model = AWGN;
      chMod = 1;
      break;
    case 'b':
      bundling_flag = 0;
      break;
    case 'd':
      delay = atoi(optarg);
      break;
    case 'D':
      maxDoppler = atoi(optarg);
      break;
    case 'm':
      mcs = atoi(optarg);
      break;
    case 'n':
      n_frames = atoi(optarg);
      break;
    case 'Y':
      n_ch_rlz = atoi(optarg);
      break;  
    case 'X':
      abstx= atoi(optarg);
      break;  
    case 'g':
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      sprintf(channel_model_input,optarg,10);
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      switch((char)*optarg) {
      case 'A': 
	channel_model=SCM_A;
	chMod = 2;
	break;
      case 'B': 
	channel_model=SCM_B;
	chMod = 3;
	break;
      case 'C': 
	channel_model=SCM_C;
	chMod = 4;
	break;
      case 'D': 
	channel_model=SCM_D;
	chMod = 5;
	break;
      case 'E': 
	channel_model=EPA;
	chMod = 6;
	break;
      case 'F': 
	channel_model=EVA;
	chMod = 7;
	break;
      case 'G': 
	channel_model=ETU;
	chMod = 8;
	break;
      case 'H':
	channel_model=Rayleigh8;
	chMod = 9;
	break;
      case 'I':
	channel_model=Rayleigh1;
	chMod = 10;
	break;
      case 'J':
	channel_model=Rayleigh1_corr;
	chMod = 11;
	break;
      case 'K':
	channel_model=Rayleigh1_anticorr;
	chMod = 12;
	break;
      case 'L':
	channel_model=Rice8;
	chMod = 13;
	break;
      case 'M':
	channel_model=Rice1;
	chMod = 14;
	break;
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      case 'N':
	channel_model=AWGN;
	chMod = 1;
	break;
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      default:
	msg("Unsupported channel model!\n");
	exit(-1);
	break;
      }
      break;
    case 's':
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      snr0 = atof(optarg);
      break;
    case 'w':
      snr_int = atof(optarg);
      break;
    case 'e':
      input_snr_step= atof(optarg);
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      break;
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    case 'x':
      transmission_mode=atoi(optarg);
      if ((transmission_mode!=1) &&
	  (transmission_mode!=2)) {
	msg("Unsupported transmission mode %d\n",transmission_mode);
	exit(-1);
      }
      if (transmission_mode>1) {
	n_tx = 1;
      }
      break;
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    case 'y':
      n_rx = atoi(optarg);
      break;
    case 'S':
      subframe = atoi(optarg);
      break;
    case 'T':
      tdd_config=atoi(optarg);
      frame_type=TDD;
      break;
    case 'p':
      extended_prefix_flag=1;
      break;
    case 'r':
      nb_rb = atoi(optarg);
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      nb_rb_set = 1;
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      break;
    case 'f':
      first_rb = atoi(optarg);
      break;
    case 'c':
      cyclic_shift = atoi(optarg);
      break;
    case 'N':
      N0 = atoi(optarg);
      break;
   
    case 'o':
      srs_flag = 1;
      break;

    case 'i':
      input_fdUL = fopen(optarg,"r");
      msg("Reading in %s (%p)\n",optarg,input_fdUL);
      if (input_fdUL == (FILE*)NULL) {
	msg("Unknown file %s\n",optarg);
	exit(-1);
      }
      //      input_file=1;
      break;
    case 'A':
      beta_ACK = atoi(optarg);
      if (beta_ACK>15) {
	printf("beta_ack must be in (0..15)\n");
	exit(-1);
      }
      break;
    case 'C':
      beta_CQI = atoi(optarg);
      if ((beta_CQI>15)||(beta_CQI<2)) {
	printf("beta_cqi must be in (2..15)\n");
	exit(-1);
      }
      break;
      
    case 'R':
      beta_RI = atoi(optarg);
      if ((beta_RI>15)||(beta_RI<2)) {
	printf("beta_ri must be in (0..13)\n");
	exit(-1);
      }
      break;
    case 'Q':
      cqi_flag=1;
      break;
    case 'B':
      N_RB_DL=atoi(optarg);
      break;
    case 'P':
      dump_perf=1;
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      opp_enabled=1;
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      break;
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    case 'O':
      test_perf=atoi(optarg);
      //print_perf =1;
      break;
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    case 'L':
      llr8_flag=1;
      break;
    case 'I':
      max_turbo_iterations=atoi(optarg);
      break;
    case 'h':
    default:
      printf("%s -h(elp) -a(wgn on) -m mcs -n n_frames -s snr0 -t delay_spread -p (extended prefix on) -r nb_rb -f first_rb -c cyclic_shift -o (srs on) -g channel_model [A:M] Use 3GPP 25.814 SCM-A/B/C/D('A','B','C','D') or 36-101 EPA('E'), EVA ('F'),ETU('G') models (ignores delay spread and Ricean factor), Rayghleigh8 ('H'), Rayleigh1('I'), Rayleigh1_corr('J'), Rayleigh1_anticorr ('K'), Rice8('L'), Rice1('M'), -d Channel delay, -D maximum Doppler shift \n",argv[0]);
      exit(1);
      break;
    }
  }
  
  lte_param_init(1,n_rx,1,extended_prefix_flag,N_RB_DL,frame_type,tdd_config,osf);  
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  if (nb_rb_set == 0)
     nb_rb = PHY_vars_eNB->lte_frame_parms.N_RB_UL;

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  printf("1 . rxdataF_comp[0] %p\n",PHY_vars_eNB->lte_eNB_pusch_vars[0]->rxdataF_comp[0][0]);
  printf("Setting mcs = %d\n",mcs);
  printf("n_frames = %d\n",	n_frames);

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  snr1 = snr0+snr_int;
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  printf("SNR0 %f, SNR1 %f\n",snr0,snr1);

  /*
    txdataF    = (int **)malloc16(2*sizeof(int*));
    txdataF[0] = (int *)malloc16(FRAME_LENGTH_BYTES);
    txdataF[1] = (int *)malloc16(FRAME_LENGTH_BYTES);
  
    txdata    = (int **)malloc16(2*sizeof(int*));
    txdata[0] = (int *)malloc16(FRAME_LENGTH_BYTES);
    txdata[1] = (int *)malloc16(FRAME_LENGTH_BYTES);
  */

  frame_parms = &PHY_vars_eNB->lte_frame_parms;

  txdata = PHY_vars_UE->lte_ue_common_vars.txdata;

  
  s_re = malloc(2*sizeof(double*));
  s_im = malloc(2*sizeof(double*));
  r_re = malloc(2*sizeof(double*));
  r_im = malloc(2*sizeof(double*));
  //  r_re0 = malloc(2*sizeof(double*));
  //  r_im0 = malloc(2*sizeof(double*));

  nsymb = (PHY_vars_eNB->lte_frame_parms.Ncp == 0) ? 14 : 12;
  
  coded_bits_per_codeword = nb_rb * (12 * get_Qm(mcs)) * nsymb;

  rate = (double)dlsch_tbs25[get_I_TBS(mcs)][nb_rb-1]/(coded_bits_per_codeword);

  printf("Rate = %f (mod %d), coded bits %d\n",rate,get_Qm(mcs),coded_bits_per_codeword);
  
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  sprintf(bler_fname,"ULbler_mcs%d_nrb%d_ChannelModel%d_nsim%d.csv",mcs,nb_rb,chMod,n_frames);
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  bler_fd = fopen(bler_fname,"w");
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  fprintf(bler_fd,"#SNR;mcs;nb_rb;TBS;rate;errors[0];trials[0];errors[1];trials[1];errors[2];trials[2];errors[3];trials[3]\n");
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  if (test_perf != 0) {
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    char hostname[1024];
    hostname[1023] = '\0';
    gethostname(hostname, 1023);
    printf("Hostname: %s\n", hostname);
    sprintf(time_meas_fname,"%s/TEST/OAI/PERF_%s/time_meas_prb%d_mcs%d_antrx%d_channel%s_tx%d.csv",
	    getenv("OPENAIR_TARGETS"),hostname,
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	    N_RB_DL,mcs,n_rx,channel_model_input,transmission_mode);
    time_meas_fd = fopen(time_meas_fname,"w");
  }
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  if(abstx){
    sprintf(fperen_name,"ULchan_estims_F_mcs%d_rb%d_chanMod%d_nframes%d_chanReal%d.m",mcs,nb_rb,chMod,n_frames,n_ch_rlz);
    fperen = fopen(fperen_name,"a+");
    fprintf(fperen,"chest_f = [");
    fclose(fperen); 
  
    sprintf(fmageren_name,"ChanMag_F_mcs%d_rb%d_chanMod%d_nframes%d_chanReal%d.m",mcs,nb_rb,chMod,n_frames,n_ch_rlz);
    fmageren = fopen(fmageren_name,"a+");
    fprintf(fmageren,"mag_f = [");
    fclose(fmageren); 
  
    sprintf(flogeren_name,"Log2Max_mcs%d_rb%d_chanMod%d_nframes%d_chanReal%d.m",mcs,nb_rb,chMod,n_frames,n_ch_rlz);
    flogeren = fopen(flogeren_name,"a+");
    fprintf(flogeren,"mag_f = [");
    fclose(flogeren); 
  }
  /*
    sprintf(ftxlev_name,"txlevel_mcs%d_rb%d_chanMod%d_nframes%d_chanReal%d.m",mcs,nb_rb,chMod,n_frames,n_ch_rlz);
    ftxlev = fopen(ftxlev_name,"a+");
    fprintf(ftxlev,"txlev = [");
    fclose(ftexlv); 
  */
  
  if(abstx){
    // CSV file 
    sprintf(csv_fname,"EULdataout_tx%d_mcs%d_nbrb%d_chan%d_nsimus%d_eren.m",transmission_mode,mcs,nb_rb,chMod,n_frames);
    csv_fdUL = fopen(csv_fname,"w");
    fprintf(csv_fdUL,"data_all%d=[",mcs);
  }
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  for (i=0;i<2;i++) {
    s_re[i] = malloc(FRAME_LENGTH_COMPLEX_SAMPLES*sizeof(double));
    s_im[i] = malloc(FRAME_LENGTH_COMPLEX_SAMPLES*sizeof(double));
    r_re[i] = malloc(FRAME_LENGTH_COMPLEX_SAMPLES*sizeof(double));
    r_im[i] = malloc(FRAME_LENGTH_COMPLEX_SAMPLES*sizeof(double));
    //    r_re0[i] = malloc(FRAME_LENGTH_COMPLEX_SAMPLES*sizeof(double));
    //    bzero(r_re0[i],FRAME_LENGTH_COMPLEX_SAMPLES*sizeof(double));
    //    r_im0[i] = malloc(FRAME_LENGTH_COMPLEX_SAMPLES*sizeof(double));
    //    bzero(r_im0[i],FRAME_LENGTH_COMPLEX_SAMPLES*sizeof(double));
  }


#ifdef XFORMS
  fl_initialize (&argc, argv, NULL, 0, 0);
  form_enb = create_lte_phy_scope_enb();
  sprintf (title, "LTE PHY SCOPE eNB");
  fl_show_form (form_enb->lte_phy_scope_enb, FL_PLACE_HOTSPOT, FL_FULLBORDER, title);  
#endif

  PHY_vars_UE->lte_ue_pdcch_vars[0]->crnti = 14;

  PHY_vars_UE->lte_frame_parms.soundingrs_ul_config_common.srs_BandwidthConfig = 2;
  PHY_vars_UE->lte_frame_parms.soundingrs_ul_config_common.srs_SubframeConfig = 7;
  PHY_vars_UE->soundingrs_ul_config_dedicated[eNB_id].srs_Bandwidth = 0;
  PHY_vars_UE->soundingrs_ul_config_dedicated[eNB_id].transmissionComb = 0;
  PHY_vars_UE->soundingrs_ul_config_dedicated[eNB_id].freqDomainPosition = 0;

  PHY_vars_eNB->lte_frame_parms.soundingrs_ul_config_common.srs_BandwidthConfig = 2;
  PHY_vars_eNB->lte_frame_parms.soundingrs_ul_config_common.srs_SubframeConfig = 7;

  PHY_vars_eNB->soundingrs_ul_config_dedicated[UE_id].srs_ConfigIndex = 1;
  PHY_vars_eNB->soundingrs_ul_config_dedicated[UE_id].srs_Bandwidth = 0;
  PHY_vars_eNB->soundingrs_ul_config_dedicated[UE_id].transmissionComb = 0;
  PHY_vars_eNB->soundingrs_ul_config_dedicated[UE_id].freqDomainPosition = 0;
  PHY_vars_eNB->cooperation_flag = cooperation_flag;
  //  PHY_vars_eNB->eNB_UE_stats[0].SRS_parameters = PHY_vars_UE->SRS_parameters;

  PHY_vars_eNB->pusch_config_dedicated[UE_id].betaOffset_ACK_Index = beta_ACK;
  PHY_vars_eNB->pusch_config_dedicated[UE_id].betaOffset_RI_Index  = beta_RI;
  PHY_vars_eNB->pusch_config_dedicated[UE_id].betaOffset_CQI_Index = beta_CQI;
  PHY_vars_UE->pusch_config_dedicated[eNB_id].betaOffset_ACK_Index = beta_ACK;
  PHY_vars_UE->pusch_config_dedicated[eNB_id].betaOffset_RI_Index  = beta_RI;
  PHY_vars_UE->pusch_config_dedicated[eNB_id].betaOffset_CQI_Index = beta_CQI;
  
  printf("PUSCH Beta : ACK %f, RI %f, CQI %f\n",(double)beta_ack[beta_ACK]/8,(double)beta_ri[beta_RI]/8,(double)beta_cqi[beta_CQI]/8);

  UE2eNB = new_channel_desc_scm(PHY_vars_eNB->lte_frame_parms.nb_antennas_tx,
                                PHY_vars_UE->lte_frame_parms.nb_antennas_rx,
                                channel_model,
                                BW,
                                forgetting_factor,
                                delay,
                                0);
  // set Doppler
  UE2eNB->max_Doppler = maxDoppler;

  // NN: N_RB_UL has to be defined in ulsim
  PHY_vars_eNB->ulsch_eNB[0] = new_eNB_ulsch(8,max_turbo_iterations,N_RB_DL,0);
  PHY_vars_UE->ulsch_ue[0]   = new_ue_ulsch(8,N_RB_DL,0);
  /*
  // Create transport channel structures for 2 transport blocks (MIMO)
  for (i=0;i<2;i++) {
    PHY_vars_eNB->dlsch_eNB[0][i] = new_eNB_dlsch(1,8,0);
    PHY_vars_UE->dlsch_ue[0][i]  = new_ue_dlsch(1,8,MAX_TURBO_ITERATIONS,0);
  
    if (!PHY_vars_eNB->dlsch_eNB[0][i]) {
      printf("Can't get eNB dlsch structures\n");
      exit(-1);
    }
    
    if (!PHY_vars_UE->dlsch_ue[0][i]) {
      printf("Can't get ue dlsch structures\n");
      exit(-1);
    }
    
    PHY_vars_eNB->dlsch_eNB[0][i]->rnti = 14;
    PHY_vars_UE->dlsch_ue[0][i]->rnti   = 14;

  }
  */

  switch (PHY_vars_eNB->lte_frame_parms.N_RB_UL) {
  case 6:
    break;
  case 25:
    if (PHY_vars_eNB->lte_frame_parms.frame_type == TDD) {
      ((DCI0_5MHz_TDD_1_6_t*)&UL_alloc_pdu)->type    = 0;
      ((DCI0_5MHz_TDD_1_6_t*)&UL_alloc_pdu)->rballoc = computeRIV(PHY_vars_eNB->lte_frame_parms.N_RB_UL,first_rb,nb_rb);// 12 RBs from position 8
      printf("nb_rb %d/%d, rballoc %d (dci %x)\n",nb_rb,PHY_vars_eNB->lte_frame_parms.N_RB_UL,((DCI0_5MHz_TDD_1_6_t*)&UL_alloc_pdu)->rballoc,*(uint32_t *)&UL_alloc_pdu);
      ((DCI0_5MHz_TDD_1_6_t*)&UL_alloc_pdu)->mcs     = mcs;
      ((DCI0_5MHz_TDD_1_6_t*)&UL_alloc_pdu)->ndi     = 1;
      ((DCI0_5MHz_TDD_1_6_t*)&UL_alloc_pdu)->TPC     = 0;
      ((DCI0_5MHz_TDD_1_6_t*)&UL_alloc_pdu)->cqi_req = cqi_flag&1;
      ((DCI0_5MHz_TDD_1_6_t*)&UL_alloc_pdu)->cshift  = 0;
      ((DCI0_5MHz_TDD_1_6_t*)&UL_alloc_pdu)->dai     = 1;
    }
    else {
      ((DCI0_5MHz_FDD_t*)&UL_alloc_pdu)->type    = 0;
      ((DCI0_5MHz_FDD_t*)&UL_alloc_pdu)->rballoc = computeRIV(PHY_vars_eNB->lte_frame_parms.N_RB_UL,first_rb,nb_rb);// 12 RBs from position 8
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      printf("nb_rb %d/%d, rballoc %d (dci %x)\n",nb_rb,PHY_vars_eNB->lte_frame_parms.N_RB_UL,((DCI0_5MHz_FDD_t*)&UL_alloc_pdu)->rballoc,*(uint32_t *)&UL_alloc_pdu);
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      ((DCI0_5MHz_FDD_t*)&UL_alloc_pdu)->mcs     = mcs;
      ((DCI0_5MHz_FDD_t*)&UL_alloc_pdu)->ndi     = 1;
      ((DCI0_5MHz_FDD_t*)&UL_alloc_pdu)->TPC     = 0;
      ((DCI0_5MHz_FDD_t*)&UL_alloc_pdu)->cqi_req = cqi_flag&1;
      ((DCI0_5MHz_FDD_t*)&UL_alloc_pdu)->cshift  = 0;
    }
    break;
  case 50:
    if (PHY_vars_eNB->lte_frame_parms.frame_type == TDD) {
      ((DCI0_10MHz_TDD_1_6_t*)&UL_alloc_pdu)->type    = 0;
      ((DCI0_10MHz_TDD_1_6_t*)&UL_alloc_pdu)->rballoc = computeRIV(PHY_vars_eNB->lte_frame_parms.N_RB_UL,first_rb,nb_rb);// 12 RBs from position 8
      printf("nb_rb %d/%d, rballoc %d (dci %x)\n",nb_rb,PHY_vars_eNB->lte_frame_parms.N_RB_UL,((DCI0_10MHz_TDD_1_6_t*)&UL_alloc_pdu)->rballoc,*(uint32_t *)&UL_alloc_pdu);
      ((DCI0_10MHz_TDD_1_6_t*)&UL_alloc_pdu)->mcs     = mcs;
      ((DCI0_10MHz_TDD_1_6_t*)&UL_alloc_pdu)->ndi     = 1;
      ((DCI0_10MHz_TDD_1_6_t*)&UL_alloc_pdu)->TPC     = 0;
      ((DCI0_10MHz_TDD_1_6_t*)&UL_alloc_pdu)->cqi_req = cqi_flag&1;
      ((DCI0_10MHz_TDD_1_6_t*)&UL_alloc_pdu)->cshift  = 0;
      ((DCI0_10MHz_TDD_1_6_t*)&UL_alloc_pdu)->dai     = 1;
    }
    else {
      ((DCI0_10MHz_FDD_t*)&UL_alloc_pdu)->type    = 0;
      ((DCI0_10MHz_FDD_t*)&UL_alloc_pdu)->rballoc = computeRIV(PHY_vars_eNB->lte_frame_parms.N_RB_UL,first_rb,nb_rb);// 12 RBs from position 8
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      printf("nb_rb %d/%d, rballoc %d (dci %x)\n",nb_rb,PHY_vars_eNB->lte_frame_parms.N_RB_UL,((DCI0_10MHz_FDD_t*)&UL_alloc_pdu)->rballoc,*(uint32_t *)&UL_alloc_pdu);
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      ((DCI0_10MHz_FDD_t*)&UL_alloc_pdu)->mcs     = mcs;
      ((DCI0_10MHz_FDD_t*)&UL_alloc_pdu)->ndi     = 1;
      ((DCI0_10MHz_FDD_t*)&UL_alloc_pdu)->TPC     = 0;
      ((DCI0_10MHz_FDD_t*)&UL_alloc_pdu)->cqi_req = cqi_flag&1;
      ((DCI0_10MHz_FDD_t*)&UL_alloc_pdu)->cshift  = 0;
    }
    break;
  case 100:
    if (PHY_vars_eNB->lte_frame_parms.frame_type == TDD) {
      ((DCI0_20MHz_TDD_1_6_t*)&UL_alloc_pdu)->type    = 0;
      ((DCI0_20MHz_TDD_1_6_t*)&UL_alloc_pdu)->rballoc = computeRIV(PHY_vars_eNB->lte_frame_parms.N_RB_UL,first_rb,nb_rb);// 12 RBs from position 8
      printf("nb_rb %d/%d, rballoc %d (dci %x)\n",nb_rb,PHY_vars_eNB->lte_frame_parms.N_RB_UL,((DCI0_20MHz_TDD_1_6_t*)&UL_alloc_pdu)->rballoc,*(uint32_t *)&UL_alloc_pdu);
      ((DCI0_20MHz_TDD_1_6_t*)&UL_alloc_pdu)->mcs     = mcs;
      ((DCI0_20MHz_TDD_1_6_t*)&UL_alloc_pdu)->ndi     = 1;
      ((DCI0_20MHz_TDD_1_6_t*)&UL_alloc_pdu)->TPC     = 0;
      ((DCI0_20MHz_TDD_1_6_t*)&UL_alloc_pdu)->cqi_req = cqi_flag&1;
      ((DCI0_20MHz_TDD_1_6_t*)&UL_alloc_pdu)->cshift  = 0;
      ((DCI0_20MHz_TDD_1_6_t*)&UL_alloc_pdu)->dai     = 1;
    }
    else {
      ((DCI0_20MHz_FDD_t*)&UL_alloc_pdu)->type    = 0;
      ((DCI0_20MHz_FDD_t*)&UL_alloc_pdu)->rballoc = computeRIV(PHY_vars_eNB->lte_frame_parms.N_RB_UL,first_rb,nb_rb);// 12 RBs from position 8
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      printf("nb_rb %d/%d, rballoc %d (dci %x)\n",nb_rb,PHY_vars_eNB->lte_frame_parms.N_RB_UL,((DCI0_20MHz_FDD_t*)&UL_alloc_pdu)->rballoc,*(uint32_t *)&UL_alloc_pdu);
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      ((DCI0_20MHz_FDD_t*)&UL_alloc_pdu)->mcs     = mcs;
      ((DCI0_20MHz_FDD_t*)&UL_alloc_pdu)->ndi     = 1;
      ((DCI0_20MHz_FDD_t*)&UL_alloc_pdu)->TPC     = 0;
      ((DCI0_20MHz_FDD_t*)&UL_alloc_pdu)->cqi_req = cqi_flag&1;
      ((DCI0_20MHz_FDD_t*)&UL_alloc_pdu)->cshift  = 0;
    }
    break;
  default:
    break;
  }


  PHY_vars_UE->PHY_measurements.rank[0] = 0;
  PHY_vars_UE->transmission_mode[0] = 2;
  PHY_vars_UE->pucch_config_dedicated[0].tdd_AckNackFeedbackMode = bundling_flag == 1 ? bundling : multiplexing;
  PHY_vars_eNB->transmission_mode[0] = 2;
  PHY_vars_eNB->pucch_config_dedicated[0].tdd_AckNackFeedbackMode = bundling_flag == 1 ? bundling : multiplexing;
  PHY_vars_UE->lte_frame_parms.pusch_config_common.ul_ReferenceSignalsPUSCH.groupHoppingEnabled = 1;
  PHY_vars_eNB->lte_frame_parms.pusch_config_common.ul_ReferenceSignalsPUSCH.groupHoppingEnabled = 1;
  PHY_vars_UE->lte_frame_parms.pusch_config_common.ul_ReferenceSignalsPUSCH.sequenceHoppingEnabled = 0;
  PHY_vars_eNB->lte_frame_parms.pusch_config_common.ul_ReferenceSignalsPUSCH.sequenceHoppingEnabled = 0;
  PHY_vars_UE->lte_frame_parms.pusch_config_common.ul_ReferenceSignalsPUSCH.groupAssignmentPUSCH = 0;
  PHY_vars_eNB->lte_frame_parms.pusch_config_common.ul_ReferenceSignalsPUSCH.groupAssignmentPUSCH = 0;
  PHY_vars_UE->frame=1;PHY_vars_eNB->frame=1;
  msg("Init UL hopping UE\n");
  init_ul_hopping(&PHY_vars_UE->lte_frame_parms);
  msg("Init UL hopping eNB\n");
  init_ul_hopping(&PHY_vars_eNB->lte_frame_parms);


  generate_ue_ulsch_params_from_dci((void *)&UL_alloc_pdu,
				    14,
				    ul_subframe2pdcch_alloc_subframe(&PHY_vars_UE->lte_frame_parms,subframe),
				    format0,
				    PHY_vars_UE,
				    SI_RNTI,
				    0,
				    P_RNTI,
				    CBA_RNTI,
				    0,
				    srs_flag);

  //  printf("RIV %d\n",UL_alloc_pdu.rballoc);

  generate_eNB_ulsch_params_from_dci((void *)&UL_alloc_pdu,
				     14,
				     ul_subframe2pdcch_alloc_subframe(&PHY_vars_eNB->lte_frame_parms,subframe),
				     format0,
				     0,
				     PHY_vars_eNB,
				     SI_RNTI,
				     0,
				     P_RNTI,
				     CBA_RNTI,
				     srs_flag);




  
  
  for (ch_realization=0;ch_realization<n_ch_rlz;ch_realization++){
 
    /*
      if(abstx){
      int ulchestim_f[300*12];
      int ulchestim_t[2*(frame_parms->ofdm_symbol_size)];
      }
    */
	 
    if(abstx){
      printf("**********************Channel Realization Index = %d **************************\n", ch_realization);
      saving_bler=1;
    }
	

    if ((subframe>5) || (subframe < 4))
      PHY_vars_UE->frame++;
 
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    for (SNR=snr0;SNR<snr1;SNR+=input_snr_step) {
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      errs[0]=0;
      errs[1]=0;
      errs[2]=0;
      errs[3]=0;
      round_trials[0] = 0;
      round_trials[1] = 0;
      round_trials[2] = 0;
      round_trials[3] = 0;
      cqi_errors=0;
      ack_errors=0;
      cqi_crc_falsepositives=0;
      cqi_crc_falsenegatives=0;
      round=0;
	
      //randominit(0);

      PHY_vars_eNB->frame = PHY_vars_UE->frame;
      harq_pid = subframe2harq_pid(&PHY_vars_UE->lte_frame_parms,PHY_vars_UE->frame,subframe);
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      printf("UL frame %d/subframe %d, harq_pid %d\n",PHY_vars_UE->frame,subframe,harq_pid);
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      if (input_fdUL == NULL) {
	input_buffer_length = PHY_vars_UE->ulsch_ue[0]->harq_processes[harq_pid]->TBS/8;
	input_buffer = (unsigned char *)malloc(input_buffer_length+4);

	if (n_frames == 1) {
	  trch_out_fdUL= fopen("ulsch_trchUL.txt","w");
	  for (i=0;i<input_buffer_length;i++) {
	    input_buffer[i] = taus()&0xff;
	    for (j=0;j<8;j++)
	      fprintf(trch_out_fdUL,"%d\n",(input_buffer[i]>>(7-j))&1);
	  }
	  fclose(trch_out_fdUL);
	}
	else {
	  for (i=0;i<input_buffer_length;i++)
	    input_buffer[i] = taus()&0xff;
	}
      }
      else {
	n_frames=1;
	i=0;
	while (!feof(input_fdUL)) {
	  fscanf(input_fdUL,"%s %s",input_val_str,input_val_str2);//&input_val1,&input_val2);
	
	  if ((i%4)==0) {
	    ((short*)txdata[0])[i/2] = (short)((1<<15)*strtod(input_val_str,NULL));
	    ((short*)txdata[0])[(i/2)+1] = (short)((1<<15)*strtod(input_val_str2,NULL));
	    if ((i/4)<100)
	      printf("sample %d => %e + j%e (%d +j%d)\n",i/4,strtod(input_val_str,NULL),strtod(input_val_str2,NULL),((short*)txdata[0])[i/4],((short*)txdata[0])[(i/4)+1]);//1,input_val2,);
	  }
	  i++;
	  if (i>(FRAME_LENGTH_SAMPLES))
	    break;
	}
	printf("Read in %d samples\n",i/4);
	//      write_output("txsig0UL.m","txs0", txdata[0],2*frame_parms->samples_per_tti,1,1);
	//    write_output("txsig1.m","txs1", txdata[1],FRAME_LENGTH_COMPLEX_SAMPLES,1,1);
	tx_lev = signal_energy(&txdata[0][0],
			       OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES);
	tx_lev_dB = (unsigned int) dB_fixed(tx_lev);
      
      }

      avg_iter = 0; iter_trials=0;
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      reset_meas(&PHY_vars_UE->phy_proc_tx);
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      reset_meas(&PHY_vars_UE->ofdm_mod_stats);
      reset_meas(&PHY_vars_UE->ulsch_modulation_stats);
      reset_meas(&PHY_vars_UE->ulsch_encoding_stats);
      reset_meas(&PHY_vars_UE->ulsch_interleaving_stats);
      reset_meas(&PHY_vars_UE->ulsch_rate_matching_stats);
      reset_meas(&PHY_vars_UE->ulsch_turbo_encoding_stats);
      reset_meas(&PHY_vars_UE->ulsch_segmentation_stats);
      reset_meas(&PHY_vars_UE->ulsch_multiplexing_stats);
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      reset_meas(&PHY_vars_eNB->phy_proc_rx);
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      reset_meas(&PHY_vars_eNB->ofdm_demod_stats);
      reset_meas(&PHY_vars_eNB->ulsch_channel_estimation_stats);
      reset_meas(&PHY_vars_eNB->ulsch_freq_offset_estimation_stats);
      reset_meas(&PHY_vars_eNB->rx_dft_stats);
      reset_meas(&PHY_vars_eNB->ulsch_decoding_stats);
      reset_meas(&PHY_vars_eNB->ulsch_turbo_decoding_stats);
      reset_meas(&PHY_vars_eNB->ulsch_deinterleaving_stats);
      reset_meas(&PHY_vars_eNB->ulsch_demultiplexing_stats);
      reset_meas(&PHY_vars_eNB->ulsch_rate_unmatching_stats);
      reset_meas(&PHY_vars_eNB->ulsch_tc_init_stats);    
      reset_meas(&PHY_vars_eNB->ulsch_tc_alpha_stats);
      reset_meas(&PHY_vars_eNB->ulsch_tc_beta_stats);
      reset_meas(&PHY_vars_eNB->ulsch_tc_gamma_stats);
      reset_meas(&PHY_vars_eNB->ulsch_tc_ext_stats);
      reset_meas(&PHY_vars_eNB->ulsch_tc_intl1_stats);
      reset_meas(&PHY_vars_eNB->ulsch_tc_intl2_stats);

      for (trials = 0;trials<n_frames;trials++) {
	//      printf("*");
	//        PHY_vars_UE->frame++;
	//        PHY_vars_eNB->frame++;
      
	fflush(stdout);
	round=0;
	while (round < 4) {
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	  PHY_vars_eNB->ulsch_eNB[0]->harq_processes[harq_pid]->round=round;
	  PHY_vars_UE->ulsch_ue[0]->harq_processes[harq_pid]->round=round;
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	  //	printf("Trial %d : Round %d ",trials,round);
	  round_trials[round]++;
	  if (round == 0) {
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	    //PHY_vars_eNB->ulsch_eNB[0]->harq_processes[harq_pid]->Ndi = 1;
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	    PHY_vars_eNB->ulsch_eNB[0]->harq_processes[harq_pid]->rvidx = round>>1;
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	    //PHY_vars_UE->ulsch_ue[0]->harq_processes[harq_pid]->Ndi = 1;
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	    PHY_vars_UE->ulsch_ue[0]->harq_processes[harq_pid]->rvidx = round>>1;
	  }
	  else {
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	    //PHY_vars_eNB->ulsch_eNB[0]->harq_processes[harq_pid]->Ndi = 0;
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	    PHY_vars_eNB->ulsch_eNB[0]->harq_processes[harq_pid]->rvidx = round>>1;
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	    //PHY_vars_UE->ulsch_ue[0]->harq_processes[harq_pid]->Ndi = 0;
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	    PHY_vars_UE->ulsch_ue[0]->harq_processes[harq_pid]->rvidx = round>>1;
	  }
	
	
	  /////////////////////
	  if (abstx) {
	    if (trials==0 && round==0 && SNR==snr0){  //generate a new channel
	      hold_channel = 0;
	      flagMag=0;
	    }
	    else{
	      hold_channel = 1;
	      flagMag = 1;
	    }
	  }
	  else
	    {
	      hold_channel = 0;
	      flagMag=1;
	    }
	  ///////////////////////////////////////
	
	  if (input_fdUL == NULL) {
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	    start_meas(&PHY_vars_UE->phy_proc_tx);

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#ifdef OFDMA_ULSCH
	    if (srs_flag)
	      generate_srs_tx(PHY_vars_UE,0,AMP,subframe);
	    generate_drs_pusch(PHY_vars_UE,0,AMP,subframe,first_rb,nb_rb,0);
	  
#else
	    if (srs_flag)
	      generate_srs_tx(PHY_vars_UE,0,AMP,subframe);
	    generate_drs_pusch(PHY_vars_UE,0,
			       AMP,subframe,
			       PHY_vars_UE->ulsch_ue[0]->harq_processes[harq_pid]->first_rb,
			       PHY_vars_UE->ulsch_ue[0]->harq_processes[harq_pid]->nb_rb,
			       0);
#endif	

	    if ((cqi_flag == 1) && (n_frames == 1) ) {
	      printf("CQI information (O %d) %d %d\n",PHY_vars_UE->ulsch_ue[0]->O,
		     PHY_vars_UE->ulsch_ue[0]->o[0],PHY_vars_UE->ulsch_ue[0]->o[1]);
	      print_CQI(PHY_vars_UE->ulsch_ue[0]->o,PHY_vars_UE->ulsch_ue[0]->uci_format,0);
	    }

	    PHY_vars_UE->ulsch_ue[0]->o_ACK[0] = taus()&1;

	    start_meas(&PHY_vars_UE->ulsch_encoding_stats);	      
	    if (ulsch_encoding(input_buffer,
			       PHY_vars_UE,
			       harq_pid,
			       eNB_id,
			       2, // transmission mode
			       control_only_flag,
			       1// Nbundled
			       )==-1) {
	      printf("ulsim.c Problem with ulsch_encoding\n");
	      exit(-1);
	    }
	    stop_meas(&PHY_vars_UE->ulsch_encoding_stats);

	    start_meas(&PHY_vars_UE->ulsch_modulation_stats);	      	      	  
#ifdef OFDMA_ULSCH
	    ulsch_modulation(PHY_vars_UE->lte_ue_common_vars.txdataF,AMP,
			     PHY_vars_UE->frame,subframe,&PHY_vars_UE->lte_frame_parms,PHY_vars_UE->ulsch_ue[0]);
#else  
	    //	  printf("Generating PUSCH in subframe %d with amp %d, nb_rb %d\n",subframe,AMP,nb_rb);
	    ulsch_modulation(PHY_vars_UE->lte_ue_common_vars.txdataF,AMP,
			     PHY_vars_UE->frame,subframe,&PHY_vars_UE->lte_frame_parms,
			     PHY_vars_UE->ulsch_ue[0]);
#endif
	    stop_meas(&PHY_vars_UE->ulsch_modulation_stats);	      	      	  
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	    if (n_frames==1) {
	      write_output("txsigF0UL.m","txsF0", &PHY_vars_UE->lte_ue_common_vars.txdataF[0][PHY_vars_eNB->lte_frame_parms.ofdm_symbol_size*nsymb*subframe],PHY_vars_eNB->lte_frame_parms.ofdm_symbol_size*nsymb,1,1);
	      //write_output("txsigF1.m","txsF1", PHY_vars_UE->lte_ue_common_vars.txdataF[0],FRAME_LENGTH_COMPLEX_SAMPLES_NO_PREFIX,1,1);          
	    }
	    tx_lev=0;
	    start_meas(&PHY_vars_UE->ofdm_mod_stats);	      	      	  
	    for (aa=0; aa<1; aa++) {
	      if (frame_parms->Ncp == 1) 
		PHY_ofdm_mod(&PHY_vars_UE->lte_ue_common_vars.txdataF[aa][subframe*nsymb*OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES_NO_PREFIX],        // input
			     &txdata[aa][PHY_vars_eNB->lte_frame_parms.samples_per_tti*subframe],         // output
			     PHY_vars_UE->lte_frame_parms.log2_symbol_size,                // log2_fft_size
			     nsymb,                 // number of symbols
			     PHY_vars_UE->lte_frame_parms.nb_prefix_samples,               // number of prefix samples
			     PHY_vars_UE->lte_frame_parms.twiddle_ifft,  // IFFT twiddle factors
			     PHY_vars_UE->lte_frame_parms.rev,           // bit-reversal permutation
			     CYCLIC_PREFIX);
	      else
		normal_prefix_mod(&PHY_vars_UE->lte_ue_common_vars.txdataF[aa][subframe*nsymb*OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES_NO_PREFIX],
				  &txdata[aa][PHY_vars_eNB->lte_frame_parms.samples_per_tti*subframe],
				  nsymb,
				  frame_parms);
	    
#ifndef OFDMA_ULSCH
	      apply_7_5_kHz(PHY_vars_UE,PHY_vars_UE->lte_ue_common_vars.txdata[aa],subframe<<1);
	      apply_7_5_kHz(PHY_vars_UE,PHY_vars_UE->lte_ue_common_vars.txdata[aa],1+(subframe<<1));
#endif
	    
	      stop_meas(&PHY_vars_UE->ofdm_mod_stats);	      	      
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