ulsim.c

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    Copyright(c) 1999 - 2014 Eurecom

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    it under the terms of the GNU General Public License as published by
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/*! \file ulsim.c
 \brief Top-level DL simulator
 \author R. Knopp
 \date 2011 - 2014
 \version 0.1
 \company Eurecom
 \email: knopp@eurecom.fr
 \note
 \warning
*/

#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];

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];

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



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

/*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 */

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)
{

  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_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");


}




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;
  double input_snr_step=.2,snr_int=30;
  double blerr;

  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;
  uint8_t extended_prefix_flag=0;
  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};
  uint8_t transmission_mode=1,n_rx=1,n_tx=1;

  FILE *bler_fd=NULL;
  char bler_fname[512];

  FILE *time_meas_fd=NULL;
  char time_meas_fname[256];

  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;
  FILE *csv_fdUL=NULL;

  FILE *fperen=NULL;
  char fperen_name[512];

  FILE *fmageren=NULL;
  char fmageren_name[512];

  FILE *flogeren=NULL;
  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;

  uint8_t control_only_flag = 0;
  int delay = 0;
  double maxDoppler = 0.0;
  uint8_t srs_flag = 0;

  uint8_t N_RB_DL=25,osf=1;

  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;

  uint8_t N0=30;
  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;
  int test_perf=0;
  int dump_table =0;

  double effective_rate=0.0;
  char channel_model_input[10];

  uint8_t max_turbo_iterations=4;
  uint8_t llr8_flag=0;
  int nb_rb_set = 0;
  int sf;

  opp_enabled=1; // to enable the time meas

  cpu_freq_GHz = (double)get_cpu_freq_GHz();

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


  logInit();

  while ((c = getopt (argc, argv, "hapZbm: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) {
    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':
      sprintf(channel_model_input,optarg,10);

      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;

      case 'N':
        channel_model=AWGN;
        chMod = 1;
        break;

      default:
        msg("Unsupported channel model!\n");
        exit(-1);
        break;
      }

      break;

    case 's':
      snr0 = atof(optarg);
      break;

    case 'w':
      snr_int = atof(optarg);
      break;

    case 'e':
      input_snr_step= atof(optarg);
      break;

    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;

    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);
      nb_rb_set = 1;
      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;
      opp_enabled=1;
      break;

    case 'O':
      test_perf=atoi(optarg);
      //print_perf =1;
      break;

    case 'L':
      llr8_flag=1;
      break;

    case 'I':
      max_turbo_iterations=atoi(optarg);
      break;

    case 'Z':
      dump_table = 1;
      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);

  if (nb_rb_set == 0)
    nb_rb = PHY_vars_eNB->lte_frame_parms.N_RB_UL;

  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);

  snr1 = snr0+snr_int;
  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);

  sprintf(bler_fname,"ULbler_mcs%d_nrb%d_ChannelModel%d_nsim%d.csv",mcs,nb_rb,chMod,n_frames);
  bler_fd = fopen(bler_fname,"w");

  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");

  if (test_perf != 0) {
    char hostname[1024];
    hostname[1023] = '\0';
    gethostname(hostname, 1023);
    printf("Hostname: %s\n", hostname);
    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,
            N_RB_DL,mcs,n_rx,channel_model_input,transmission_mode);
    time_meas_fd = fopen(time_meas_fname,"w");
  }

  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);
  }

  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;

  PHY_vars_UE->ul_power_control_dedicated[eNB_id].deltaMCS_Enabled = 1;

  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,
				N_RB2sampling_rate(PHY_vars_eNB->lte_frame_parms.N_RB_UL),
				N_RB2channel_bandwidth(PHY_vars_eNB->lte_frame_parms.N_RB_UL),
                                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,N_RB_DL,0);
    PHY_vars_UE->dlsch_ue[0][i]  = new_ue_dlsch(1,8,MAX_TURBO_ITERATIONS,N_RB_DL,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
      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);
      ((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
      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);
      ((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
      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);
      ((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_tx=1;

  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;
  }

  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);

  PHY_vars_eNB->proc[subframe].frame_rx = PHY_vars_UE->frame_tx;

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

  PHY_vars_UE->dlsch_ue[0][0]->harq_ack[ul_subframe2pdcch_alloc_subframe(&PHY_vars_eNB->lte_frame_parms,subframe)].send_harq_status = 1;


  //  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);
  PHY_vars_UE->frame_tx = (PHY_vars_UE->frame_tx-1)&1023;

  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);



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


  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++;

    for (SNR=snr0; SNR<snr1; SNR+=input_snr_step) {
      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);


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

      //      printf("UL frame %d/subframe %d, harq_pid %d\n",PHY_vars_UE->frame,subframe,harq_pid);
      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;
      reset_meas(&PHY_vars_UE->phy_proc_tx);
      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);

      reset_meas(&PHY_vars_eNB->phy_proc_rx);
      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);

      // initialization
      struct list time_vector_tx;
      initialize(&time_vector_tx);
      struct list time_vector_tx_ifft;
      initialize(&time_vector_tx_ifft);
      struct list time_vector_tx_mod;
      initialize(&time_vector_tx_mod);
      struct list time_vector_tx_enc;
      initialize(&time_vector_tx_enc);

      struct list time_vector_rx;
      initialize(&time_vector_rx);
      struct list time_vector_rx_fft;
      initialize(&time_vector_rx_fft);
      struct list time_vector_rx_demod;
      initialize(&time_vector_rx_demod);
      struct list time_vector_rx_dec;
      initialize(&time_vector_rx_dec);

      for (trials = 0; trials<n_frames; trials++) {
        //      printf("*");
        //        PHY_vars_UE->frame++;
        //        PHY_vars_eNB->frame++;

        fflush(stdout);
        round=0;

        while (round < 4) {
          PHY_vars_eNB->ulsch_eNB[0]->harq_processes[harq_pid]->round=round;
          PHY_vars_UE->ulsch_ue[0]->harq_processes[harq_pid]->round=round;
          //  printf("Trial %d : Round %d ",trials,round);
          round_trials[round]++;

          if (round == 0) {
            //PHY_vars_eNB->ulsch_eNB[0]->harq_processes[harq_pid]->Ndi = 1;
            PHY_vars_eNB->ulsch_eNB[0]->harq_processes[harq_pid]->rvidx = round>>1;
            //PHY_vars_UE->ulsch_ue[0]->harq_processes[harq_pid]->Ndi = 1;
            PHY_vars_UE->ulsch_ue[0]->harq_processes[harq_pid]->rvidx = round>>1;