ulsim.c 62.7 KB
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/*******************************************************************************
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    OpenAirInterface 
    Copyright(c) 1999 - 2014 Eurecom
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    OpenAirInterface is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
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    OpenAirInterface is distributed in the hope that 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.
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    You should have received a copy of the GNU General Public License
    along with OpenAirInterface.The full GNU General Public License is 
   included in this distribution in the file called "COPYING". If not, 
   see <http://www.gnu.org/licenses/>.
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  Contact Information
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  OpenAirInterface Admin: openair_admin@eurecom.fr
  OpenAirInterface Tech : openair_tech@eurecom.fr
  OpenAirInterface Dev  : openair4g-devel@eurecom.fr
  
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  Address      : Eurecom, Campus SophiaTech, 450 Route des Chappes, CS 50193 - 06904 Biot Sophia Antipolis cedex, FRANCE
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 *******************************************************************************/
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/*! \file ulsim.c
 \brief Top-level DL simulator
 \author R. Knopp
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 \date 2011 - 2014
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 \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 "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 ;


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

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/*the following parameters are used to control the processing times*/
double t_tx_max = -1000000000; /*!< \brief initial max process time for tx */
double t_rx_max = -1000000000; /*!< \brief initial max process time for rx */
double t_tx_min = 1000000000; /*!< \brief initial min process time for tx */
double t_rx_min = 1000000000; /*!< \brief initial min process time for tx */
int n_tx_dropped = 0; /*!< \brief initial max process time for tx */
int n_rx_dropped = 0; /*!< \brief initial max process time for rx */

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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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  int sf;
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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);
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    char dirname[FILENAME_MAX];
    sprintf(dirname, "%s//SIMU/USER/pre-ci-logs-%s", getenv("OPENAIR_TARGETS"),hostname);
    mkdir(dirname, 0777);
    sprintf(time_meas_fname,"%s/time_meas_prb%d_mcs%d_antrx%d_channel%s_tx%d.csv",
	    dirname,
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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;
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  PHY_vars_UE->ul_power_control_dedicated[eNB_id].deltaMCS_Enabled = 1;
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  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);
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  // Create transport channel structures for 2 transport blocks (MIMO)
  for (i=0;i<2;i++) {
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    PHY_vars_eNB->dlsch_eNB[0][i] = new_eNB_dlsch(1,8,N_RB_DL,0);
    PHY_vars_UE->dlsch_ue[0][i]  = new_ue_dlsch(1,8,MAX_TURBO_ITERATIONS,N_RB_DL,0);
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    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;

  }
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  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;
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  PHY_vars_UE->frame_tx=1;
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  for (sf=0;sf<10;sf++) { 
    PHY_vars_eNB->proc[sf].frame_tx=1; 
    PHY_vars_eNB->proc[sf].subframe_tx=sf;
    PHY_vars_eNB->proc[sf].frame_rx=1;
    PHY_vars_eNB->proc[sf].subframe_rx=sf;
  }
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  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);

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  PHY_vars_eNB->proc[subframe].frame_rx = PHY_vars_UE->frame_tx;
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  if (ul_subframe2pdcch_alloc_subframe(&PHY_vars_eNB->lte_frame_parms,subframe) > subframe) // allocation was in previous frame
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    PHY_vars_eNB->proc[ul_subframe2pdcch_alloc_subframe(&PHY_vars_eNB->lte_frame_parms,subframe)].frame_tx = (PHY_vars_UE->frame_tx-1)&1023;
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  PHY_vars_UE->dlsch_ue[0][0]->harq_ack[ul_subframe2pdcch_alloc_subframe(&PHY_vars_eNB->lte_frame_parms,subframe)].send_harq_status = 1;


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  //  printf("UE frame %d, eNB frame %d (eNB frame_tx %d)\n",PHY_vars_UE->frame,PHY_vars_eNB->proc[subframe].frame_rx,PHY_vars_eNB->proc[ul_subframe2pdcch_alloc_subframe(&PHY_vars_eNB->lte_frame_parms,subframe)].frame_tx);
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  PHY_vars_UE->frame_tx = (PHY_vars_UE->frame_tx-1)&1023;
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  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);



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  PHY_vars_UE->frame_tx = (PHY_vars_UE->frame_tx+1)&1023;
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  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;
    }
	

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    //    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);

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      harq_pid = subframe2harq_pid(&PHY_vars_UE->lte_frame_parms,PHY_vars_UE->frame_tx,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);

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      // initialization
      struct list time_vector_tx;
      initialize(&time_vector_tx);
      struct list time_vector_rx;
      initialize(&time_vector_rx);
      
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      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]);
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	      print_CQI(PHY_vars_UE->ulsch_ue[0]->o,PHY_vars_UE->ulsch_ue[0]->uci_format,PHY_vars_UE->lte_frame_parms.N_RB_DL,0);
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	    }

	    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,
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