pucchsim.c 20.7 KB
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/*
 * Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The OpenAirInterface Software Alliance licenses this file to You under
 * the OAI Public License, Version 1.0  (the "License"); you may not use this file
 * except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.openairinterface.org/?page_id=698
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *-------------------------------------------------------------------------------
 * For more information about the OpenAirInterface (OAI) Software Alliance:
 *      contact@openairinterface.org
 */

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#include <string.h>
#include <math.h>
#include <unistd.h>
#include "SIMULATION/TOOLS/defs.h"
#include "SIMULATION/RF/defs.h"
#include "PHY/types.h"
#include "PHY/defs.h"
#include "PHY/vars.h"
#ifdef EMOS
#include "SCHED/phy_procedures_emos.h"
#endif
#include "SCHED/defs.h"
#include "SCHED/vars.h"
#include "LAYER2/MAC/vars.h"
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#include "intertask_interface_init.h"
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#include "OCG_vars.h"
#include "UTIL/LOG/log_extern.h"

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#include "unitary_defs.h"
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#include "assertions.h"

char pucch_stats_string1[100],pucch_stats_string2[100];
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int current_dlsch_cqi; //FIXME!
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PHY_VARS_eNB *eNB;
PHY_VARS_UE *UE;
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#define DLSCH_RB_ALLOC 0x1fbf // igore DC component,RB13

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double cpuf;
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int main(int argc, char **argv)
{
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  char c;

  int i,l,aa;
  double sigma2, sigma2_dB=0,SNR,snr0=-2.0,snr1=0.0;
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  uint8_t snr1set=0;
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  double s_re0[30720],s_re1[30720],s_im0[30720],s_im1[30720],r_re0[30720],r_im0[30720],r_re1[30720],r_im1[30720];
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  double s_re0i0[30720],s_re1i0[30720],s_im0i0[30720],s_im1i0[30720],r_re0i0[30720],r_im0i0[30720],r_re1i0[30720],r_im1i0[30720];
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  double *s_re[2]={s_re0,s_re1};
  double *s_im[2]={s_im0,s_im1};
  double *r_re[2]={r_re0,r_re1};
  double *r_im[2]={r_im0,r_im1};
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  double *s_rei0[2]={s_re0i0,s_re1i0};
  double *s_imi0[2]={s_im0i0,s_im1i0};
  double *r_rei0[2]={r_re0i0,r_re1i0};
  double *r_imi0[2]={r_im0i0,r_im1i0};
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  double ricean_factor=0.0000005,iqim=0.0;
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  int32_t txd[30720];
  int32_t *txdatai0[2]={txd,NULL};
  int32_t txFi0[2048*14];
  int32_t *txdataFi0[2]={txFi0,NULL};
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  int trial, n_trials, ntrials=1, n_errors;
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  uint8_t transmission_mode = 1,n_tx=1,n_rx=1;
  uint16_t Nid_cell=0;
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  int n_frames=1;
  channel_desc_t *UE2eNB;
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  uint32_t nsymb,tx_lev,tx_levi0;
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  uint8_t extended_prefix_flag=0;
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  LTE_DL_FRAME_PARMS *frame_parms;
#ifdef EMOS
  fifo_dump_emos emos_dump;
#endif

  SCM_t channel_model=Rayleigh1_corr;

  //  double pucch_sinr;
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  uint8_t osf=1,N_RB_DL=25;
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  uint32_t pucch_tx=0,pucch1_missed=0,pucch1_false=0,pucch3_false=0,sig;
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  PUCCH_FMT_t pucch_format = pucch_format1;
  PUCCH_CONFIG_DEDICATED pucch_config_dedicated;
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  uint8_t subframe=0;
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  uint8_t pucch_payload[2],pucch_payloadi0[2],pucch_payload_rx[2];
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  uint8_t pucch3_payload_size=7;
  uint8_t pucch3_payload[21],pucch3_payload_rx[21];
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  double tx_gain=1.0,tx_gaini0=1.0;
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  int32_t stat;
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  double stat_no_sig,stat_sig;
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  uint8_t N0=40;
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  uint8_t pucch1_thres=10;
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  uint16_t n1_pucch = 0,n1_pucchi0;
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  uint16_t n2_pucch = 0;
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  uint16_t n3_pucch = 20;
  
  uint16_t n_rnti=0x1234;
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  int imode=-1;
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  number_of_cards = 1;

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  cpuf = get_cpu_freq_GHz();

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  while ((c = getopt (argc, argv, "har:pf:g:n:s:S:x:y:z:N:F:T:R:I:")) != -1) {
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    switch (c) {
    case 'a':
      printf("Running AWGN simulation\n");
      channel_model = AWGN;
      ntrials=1;
      break;

    case 'f':
      if (atoi(optarg)==0)
        pucch_format = pucch_format1;
      else if (atoi(optarg)==1)
        pucch_format = pucch_format1a;
      else if (atoi(optarg)==2)
        pucch_format = pucch_format1b;
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      else if (atoi(optarg)==6) // 3,4,5 is reserved for format2,2a,2b
        pucch_format = pucch_format3;
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      else {
        printf("Unsupported pucch_format %d\n",atoi(optarg));
        exit(-1);
      }

      break;

    case 'g':
      switch((char)*optarg) {
      case 'A':
        channel_model=SCM_A;
        break;

      case 'B':
        channel_model=SCM_B;
        break;

      case 'C':
        channel_model=SCM_C;
        break;

      case 'D':
        channel_model=SCM_D;
        break;

      case 'E':
        channel_model=EPA;
        break;

      case 'F':
        channel_model=EVA;
        break;

      case 'G':
        channel_model=ETU;
        break;

      case 'H':
        channel_model=Rayleigh8;

      case 'I':
        channel_model=Rayleigh1;

      case 'J':
        channel_model=Rayleigh1_corr;

      case 'K':
        channel_model=Rayleigh1_anticorr;

      case 'L':
        channel_model=Rice8;

      case 'M':
        channel_model=Rice1;
        break;

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

      break;

    case 'n':
      n_frames = atoi(optarg);
      break;

    case 's':
      snr0 = atof(optarg);
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      printf("Setting SNR0 to %f\n",snr0);
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      break;

    case 'S':
      snr1 = atof(optarg);
      snr1set=1;
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      printf("Setting SNR1 to %f\n",snr1);
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      break;

    case 'p':
      extended_prefix_flag=1;
      break;

    case 'r':
      ricean_factor = pow(10,-.1*atof(optarg));

      if (ricean_factor>1) {
        printf("Ricean factor must be between 0 and 1\n");
        exit(-1);
      }

      break;

    case 'x':
      transmission_mode=atoi(optarg);

      if ((transmission_mode!=1) &&
          (transmission_mode!=2) &&
          (transmission_mode!=6)) {
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        printf("Unsupported transmission mode %d\n",transmission_mode);
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        exit(-1);
      }

      break;

    case 'y':
      n_tx=atoi(optarg);

      if ((n_tx==0) || (n_tx>2)) {
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        printf("Unsupported number of tx antennas %d\n",n_tx);
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        exit(-1);
      }

      break;

    case 'z':
      n_rx=atoi(optarg);

      if ((n_rx==0) || (n_rx>2)) {
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        printf("Unsupported number of rx antennas %d\n",n_rx);
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        exit(-1);
      }

      break;

    case 'N':
      N0 = atoi(optarg);
      break;

    case 'T':
      pucch1_thres = atoi(optarg);
      break;

    case 'R':
      N_RB_DL = atoi(optarg);
      break;

    case 'O':
      osf = atoi(optarg);
      break;

    case 'F':
      break;

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    case 'I':
      imode = atoi(optarg);
      AssertFatal(imode<10,"Please provide an interference level 0..10\n");
      break;
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    default:
    case 'h':
      printf("%s -h(elp) -a(wgn on) -p(extended_prefix) -N cell_id -f output_filename -F input_filename -g channel_model -n n_frames -t Delayspread -r Ricean_FactordB -s snr0 -S snr1 -x transmission_mode -y TXant -z RXant -N CellId\n",
             argv[0]);
      printf("-h This message\n");
      printf("-a Use AWGN channel and not multipath\n");
      printf("-p Use extended prefix mode\n");
      printf("-n Number of frames to simulate\n");
      printf("-r Ricean factor (dB, 0 means Rayleigh, 100 is almost AWGN\n");
      printf("-s Starting SNR, runs from SNR0 to SNR0 + 5 dB.  If n_frames is 1 then just SNR is simulated\n");
      printf("-S Ending SNR, runs from SNR0 to SNR1\n");
      printf("-t Delay spread for multipath channel\n");
      printf("-g [A,B,C,D,E,F,G] Use 3GPP SCM (A,B,C,D) or 36-101 (E-EPA,F-EVA,G-ETU) models (ignores delay spread and Ricean factor)\n");
      printf("-x Transmission mode (1,2,6 for the moment)\n");
      printf("-y Number of TX antennas used in eNB\n");
      printf("-z Number of RX antennas used in UE\n");
      printf("-i Relative strength of first intefering eNB (in dB) - cell_id mod 3 = 1\n");
      printf("-j Relative strength of second intefering eNB (in dB) - cell_id mod 3 = 2\n");
      printf("-N Noise variance in dB\n");
      printf("-R N_RB_DL\n");
      printf("-O oversampling factor (1,2,4,8,16)\n");
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      printf("-f PUCCH format (0=1,1=1a,2=1b,6=3), formats 2/2a/2b not supported\n");
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      printf("-F Input filename (.txt format) for RX conformance testing\n");
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      printf("-I interference mode (0=1 interferer equal strength, 1=1 interferer +5dB,2=1 interferer +10dB\n");
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      exit (-1);
      break;
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    }
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  }
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  logInit();
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  set_taus_seed(0x1234);

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  //itti_init(TASK_MAX, THREAD_MAX, MESSAGES_ID_MAX, tasks_info, messages_info, messages_definition_xml, NULL);
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  g_log->log_component[PHY].level = LOG_INFO;
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  g_log->log_component[PHY].flag = LOG_HIGH;

  if (transmission_mode==2)
    n_tx=2;

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  lte_param_init(n_tx,
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                 n_tx,
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		 n_rx,
		 transmission_mode,
		 extended_prefix_flag,
		 FDD,
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		 Nid_cell,
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		 3,
		 N_RB_DL,
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		 0,
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		 osf,
		 0);
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  if (snr1set==0) {
    if (n_frames==1)
      snr1 = snr0+.1;
    else
      snr1 = snr0+5.0;
  }

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

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  frame_parms = &eNB->frame_parms;
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  nsymb = (frame_parms->Ncp == 0) ? 14 : 12;

  printf("FFT Size %d, Extended Prefix %d, Samples per subframe %d, Symbols per subframe %d\n",NUMBER_OF_OFDM_CARRIERS,
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         frame_parms->Ncp,frame_parms->samples_per_tti,nsymb);

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  printf("[SIM] Using SCM/101\n");
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  UE2eNB = new_channel_desc_scm(1,
				eNB->frame_parms.nb_antennas_rx,
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                                channel_model,
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 				N_RB2sampling_rate(eNB->frame_parms.N_RB_UL),
				N_RB2channel_bandwidth(eNB->frame_parms.N_RB_UL),
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                                0.0,
                                0,
                                0);

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  channel_desc_t *tmp_desc = UE2eNB;
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  if (UE2eNB==NULL) {
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    printf("Problem generating channel model. Exiting.\n");
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    exit(-1);
  }

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  init_ncs_cell(&eNB->frame_parms,eNB->ncs_cell);
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  init_ncs_cell(&UE->frame_parms,UE->ncs_cell);
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  init_ul_hopping(&eNB->frame_parms);
  init_ul_hopping(&UE->frame_parms);

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  eNB->frame_parms.pucch_config_common.deltaPUCCH_Shift = 1;
  eNB->frame_parms.pucch_config_common.nRB_CQI          = 0;
  eNB->frame_parms.pucch_config_common.nCS_AN           = 0;
  UE->frame_parms.pucch_config_common.deltaPUCCH_Shift = 1;
  UE->frame_parms.pucch_config_common.nRB_CQI          = 0;
  UE->frame_parms.pucch_config_common.nCS_AN           = 0;
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  for (SNR=snr0; SNR<snr1; SNR+=.2) {
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    printf("n_frames %d SNR %f\n",n_frames,SNR);

    n_errors = 0;
    pucch_tx = 0;
    pucch1_missed=0;
    pucch1_false=0;
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    pucch3_false=0;
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    stat_no_sig = 0;
    stat_sig = 0;

    for (trial=0; trial<n_frames; trial++) {
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      if( (pucch_format == pucch_format1) || (pucch_format == pucch_format1a) || (pucch_format == pucch_format1b) ){
	pucch_payload[0] = taus()&1;
	pucch_payload[1] = taus()&1;
	generate_pucch1x(UE->common_vars.txdataF,
			 frame_parms,
			 UE->ncs_cell,
			 pucch_format,
			 &pucch_config_dedicated,
			 n1_pucch,
			 0, //shortened_format,
			 pucch_payload,
			 AMP, //amp,
			 subframe); //subframe
	if (imode>=0) {
	  pucch_payloadi0[0] = taus()&1;
	  pucch_payloadi0[1] = taus()&1;
	  n1_pucchi0 = taus()&2047;
	  while (n1_pucchi0!=n1_pucch)
	    n1_pucchi0 = taus()&2047;

	  generate_pucch1x((int32_t**)txdataFi0,
			   frame_parms,
			   UE->ncs_cell,
			   pucch_format,
			   &pucch_config_dedicated,
			   n1_pucchi0,
			   0, //shortened_format,
			   pucch_payloadi0,
			   AMP, //amp,
			   0); //subframe
	}
      }else if( pucch_format == pucch_format3){
	for(i=0;i<pucch3_payload_size;i++)
	  pucch3_payload[i]=(uint8_t)(taus()&0x1);
	generate_pucch3x(UE->common_vars.txdataF,
			 frame_parms,
			 UE->ncs_cell,
			 pucch_format,
			 &pucch_config_dedicated,
			 n3_pucch,
			 0, //shortened_format,
			 pucch3_payload,
			 AMP, //amp,
			 subframe, //subframe
			 n_rnti);  //rnti
      }
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      tx_lev = 0;
      tx_levi0 = 0;


      for (aa=0; aa<1; aa++) {
	if (frame_parms->Ncp == 1) {
	  PHY_ofdm_mod(&UE->common_vars.txdataF[aa][subframe*frame_parms->samples_per_tti],        // input,
		       &UE->common_vars.txdata[aa][eNB->frame_parms.samples_per_tti*subframe],         // output
		       frame_parms->ofdm_symbol_size,
		       nsymb,                 // number of symbols
		       frame_parms->nb_prefix_samples,               // number of prefix samples
		       CYCLIC_PREFIX);
	  if (imode>=0)
	    PHY_ofdm_mod(&txdataFi0[0][0],        // input,
			 &txdatai0[0][0],         // output
			 frame_parms->ofdm_symbol_size,
			 nsymb,                 // number of symbols
			 frame_parms->nb_prefix_samples,               // number of prefix samples
			 CYCLIC_PREFIX);
	}
	else {
	  normal_prefix_mod(&UE->common_vars.txdataF[aa][subframe*frame_parms->samples_per_tti],
			    &UE->common_vars.txdata[aa][eNB->frame_parms.samples_per_tti*subframe],
			    nsymb,
			    frame_parms);
	  apply_7_5_kHz(UE,&UE->common_vars.txdata[aa][eNB->frame_parms.samples_per_tti*subframe],0);
	  apply_7_5_kHz(UE,&UE->common_vars.txdata[aa][eNB->frame_parms.samples_per_tti*subframe],1);
	  if (imode>=0) {
	    normal_prefix_mod(&txdataFi0[0][0],
			      &txdatai0[0][0],
			      nsymb,
			      frame_parms);
	    apply_7_5_kHz(UE,&txdatai0[0][0],0);
	    apply_7_5_kHz(UE,&txdatai0[0][0],1);

	  }
	}

	tx_lev += signal_energy(&UE->common_vars.txdata[aa][subframe*eNB->frame_parms.samples_per_tti],
				OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES);
	if (imode>=0)
	  tx_levi0 += signal_energy(&txdatai0[0][0],
				    OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES);
      }
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      for (i=0; i<frame_parms->samples_per_tti; i++) {
	  s_re[0][i] = ((double)(((short *)&UE->common_vars.txdata[0][subframe*frame_parms->samples_per_tti]))[(i<<1)]);
	  s_im[0][i] = ((double)(((short *)&UE->common_vars.txdata[0][subframe*frame_parms->samples_per_tti]))[(i<<1)+1]);
	  if (imode>=0) {
	    s_rei0[0][i] = ((double)(((short *)&txdatai0[0]))[(i<<1)]);
	    s_imi0[0][i] = ((double)(((short *)&txdatai0[0]))[(i<<1)+1]);
	  }
      }	
      AssertFatal(tmp_desc == UE2eNB, "UE2eNB overwritten\n");
 
      multipath_channel(UE2eNB,s_re,s_im,r_re,r_im,
			eNB->frame_parms.samples_per_tti,0);
      if (imode>=0)
	multipath_channel(UE2eNB,s_rei0,s_imi0,r_rei0,r_imi0,
			  eNB->frame_parms.samples_per_tti,0);
      sigma2_dB = N0;
      tx_gain = sqrt(pow(10.0,.1*(N0+SNR))/(double)tx_lev);
      if (imode>=0) tx_gaini0 = sqrt(pow(10.0,.1*(N0+SNR+imode))/(double)tx_levi0);
      
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      if (n_frames==1)
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	printf("sigma2_dB %f (SNR %f dB) tx_lev_dB %f,tx_gain %f (%f dB)\n",sigma2_dB,SNR,10*log10((double)tx_lev),tx_gain,20*log10(tx_gain));
      
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      //AWGN
      sigma2 = pow(10,sigma2_dB/10);
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      //  printf("Sigma2 %f (sigma2_dB %f)\n",sigma2,sigma2_dB);
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      if (n_frames==1) {
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	printf("rx_level data symbol %f, tx_lev %f\n",
	       10*log10(signal_energy_fp(r_re,r_im,1,OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES,0)),
	       10*log10(tx_lev));
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      }
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      if (pucch_format != pucch_format1) {
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        pucch_tx++;
        sig=1;
      } else {
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	if (trial<(n_frames>>1)) {
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	  //printf("no sig =>");
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	  sig= 0;
	} else {
	  sig=1;
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	  //printf("sig =>");
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	  pucch_tx++;
	}
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      }
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      //      sig = 1;
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      for (n_trials=0; n_trials<ntrials; n_trials++) {
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	//printf("n_trial %d\n",n_trials);
	// fill measurement symbol (19) with noise
	for (i=0; i<OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES; i++) {
	  for (aa=0; aa<eNB->frame_parms.nb_antennas_rx; aa++) {
	      
	    ((short*) &eNB->common_vars.rxdata[0][aa][(frame_parms->samples_per_tti<<1) -frame_parms->ofdm_symbol_size])[2*i] = (short) ((sqrt(sigma2/2)*gaussdouble(0.0,1.0)));
	    ((short*) &eNB->common_vars.rxdata[0][aa][(frame_parms->samples_per_tti<<1) -frame_parms->ofdm_symbol_size])[2*i+1] = (short) ((sqrt(sigma2/2)*gaussdouble(0.0,1.0)));
	  }
	}
	  
	for (i=0; i<2*nsymb*OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES; i++) {
	  for (aa=0; aa<eNB->frame_parms.nb_antennas_rx; aa++) {
	    if (n_trials==0) {
	      //    r_re[aa][i] += (pow(10.0,.05*interf1)*r_re1[aa][i] + pow(10.0,.05*interf2)*r_re2[aa][i]);
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              //    r_im[aa][i] += (pow(10.0,.05*interf1)*r_im1[aa][i] + pow(10.0,.05*interf2)*r_im2[aa][i]);
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	    }
	      
	      
	    if (sig==1) {
	      ((short*) &eNB->common_vars.rxdata[0][aa][subframe*frame_parms->samples_per_tti])[2*i] = (short) (((tx_gain*r_re[aa][i]) +sqrt(sigma2/2)*gaussdouble(0.0,1.0)));
	      ((short*) &eNB->common_vars.rxdata[0][aa][subframe*frame_parms->samples_per_tti])[2*i+1] = (short) (((tx_gain*r_im[aa][i]) + (iqim*r_re[aa][i]*tx_gain) + sqrt(sigma2/2)*gaussdouble(0.0,1.0)));
	      if (imode>=0) {
		((short*) &eNB->common_vars.rxdata[0][aa][subframe*frame_parms->samples_per_tti])[2*i] += (short) (tx_gaini0*r_rei0[aa][i]) ;
		((short*) &eNB->common_vars.rxdata[0][aa][subframe*frame_parms->samples_per_tti])[2*i] += (short) (tx_gaini0*r_imi0[aa][i]) ;
	      }
	    } else {
	      ((short*) &eNB->common_vars.rxdata[0][aa][subframe*frame_parms->samples_per_tti])[2*i] = (short) ((sqrt(sigma2/2)*gaussdouble(0.0,1.0)));
	      ((short*) &eNB->common_vars.rxdata[0][aa][subframe*frame_parms->samples_per_tti])[2*i+1] = (short) ((sqrt(sigma2/2)*gaussdouble(0.0,1.0)));
		
	    }
	  }
	}

	if ((n_frames==1)&&(n_trials==0)) {
	  printf("rx_level data symbol %f\n",
		 10*log10((double)signal_energy(&eNB->common_vars.rxdata[0][aa][subframe*frame_parms->samples_per_tti],OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES)));
	}
	  
	  
	remove_7_5_kHz(eNB,subframe<<1);
	remove_7_5_kHz(eNB,1+(subframe<<1));
	  
	for (l=0; l<eNB->frame_parms.symbols_per_tti/2; l++) {
	    
	  slot_fep_ul(&eNB->frame_parms,
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                      &eNB->common_vars,
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		      l,
		      subframe*2,// slot
		      0,
		      0
		      );
	  slot_fep_ul(&eNB->frame_parms,
		      &eNB->common_vars,
		      l,
		      1+(subframe*2),//slot
		      0,
		      0
		      );
	    
	    
	}
	  
	  
	//      if (sig == 1)
	//    printf("*");
	lte_eNB_I0_measurements(eNB,
				subframe,
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				0,
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				1);
	eNB->measurements[0].n0_power_tot_dB = N0;//(int8_t)(sigma2_dB-10*log10(eNB->frame_parms.ofdm_symbol_size/(12*NB_RB)));
	stat = rx_pucch(eNB,
			pucch_format,
			0,
			n1_pucch,
			n2_pucch,
			0, //shortened_format,
			(pucch_format==pucch_format3) ? pucch3_payload_rx : pucch_payload_rx, //payload,
			0 /* frame not defined, let's pass 0 */,
			subframe,
			pucch1_thres);
	  
	if (trial < (n_frames>>1)) {
	  stat_no_sig += (2*(double)stat/n_frames);
	  //    printf("stat (no_sig) %f\n",stat_no_sig);
	} else {
	  stat_sig += (2*(double)stat/n_frames);
	  //    printf("stat (sig) %f\n",stat_sig);
	}
	  
	//	  printf("subframe %d: pucch_payload_rx %d\n",subframe,pucch_payload_rx);
	if (pucch_format==pucch_format1) {
	  pucch1_missed = ((pucch_payload_rx[0] == 0) && (sig==1)) ? (pucch1_missed+1) : pucch1_missed;
	  pucch1_false  = ((pucch_payload_rx[0] == 1) && (sig==0)) ? (pucch1_false+1) : pucch1_false;
	  /*
	    if ((pucch_payload_rx == 0) && (sig==1)) {
	    printf("EXIT\n");
	    exit(-1);
	    }*/
	} else if( (pucch_format==pucch_format1a) || (pucch_format==pucch_format1b) ) {
	  pucch1_false = pucch_payload_rx[0] != pucch_payload[0]  ? (pucch1_false+1) : pucch1_false;
	} else if (pucch_format==pucch_format3){
	  for(i=0;i<pucch3_payload_size;i++){
	    if(pucch3_payload[i]!=pucch3_payload_rx[i]){
	      pucch3_false = (pucch3_false+1);
	      break;
	    }
	  }
	}
	  
	//      printf("sig %d\n",sig);
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      } // NSR
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    } //trial
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    if (pucch_format==pucch_format1)
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      printf("pucch_trials %d : pucch1_false %d,pucch1_missed %d, N0 %d dB, stat_no_sig %f dB, stat_sig %f dB\n",pucch_tx,pucch1_false,pucch1_missed,eNB->measurements[0].n0_power_tot_dB,
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	     10*log10(stat_no_sig),10*log10(stat_sig));
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    else if (pucch_format==pucch_format1a)
      printf("pucch_trials %d : pucch1a_errors %d\n",pucch_tx,pucch1_false);
    else if (pucch_format==pucch_format1b)
      printf("pucch_trials %d : pucch1b_errors %d\n",pucch_tx,pucch1_false);
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    else if (pucch_format==pucch_format3)
      printf("pucch_trials %d : pucch3_errors %d\n",pucch_tx,pucch3_false);
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    if (n_frames==1) {
      //write_output("txsig0.m","txs0", &txdata[0][subframe*frame_parms->samples_per_tti],frame_parms->samples_per_tti,1,1);
      write_output("txsig0pucch.m", "txs0", &UE->common_vars.txdata[0][0], FRAME_LENGTH_COMPLEX_SAMPLES,1,1);
      write_output("rxsig0.m","rxs0", &eNB->common_vars.rxdata[0][0][subframe*frame_parms->samples_per_tti],frame_parms->samples_per_tti,1,1);
      write_output("rxsigF0.m","rxsF0", &eNB->common_vars.rxdataF[0][0][0],512*nsymb*2,1,1);
    }
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    if ((pucch_format==pucch_format1a) || (pucch_format==pucch_format1b)) {
      sprintf(pucch_stats_string1,"pucch1ab_stats_%c%ddB.m",SNR<0.0?'m':'p',(int)(fabs(SNR)));
      sprintf(pucch_stats_string2,"pucch1ab%c%d",SNR<0.0?'m':'p',(int)(fabs(SNR)));
      write_output(pucch_stats_string1,pucch_stats_string2,(void*)&eNB->pucch1ab_stats[0][subframe<<11],1024,1,3);
    }
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  }
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687
  lte_sync_time_free();
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  return(n_errors);

}


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/*
696
  for (i=1;i<4;i++)
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  memcpy((void *)&PHY_vars->tx_vars[0].TX_DMA_BUFFER[i*12*OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES_NO_PREFIX*2],
  (void *)&PHY_vars->tx_vars[0].TX_DMA_BUFFER[0],
  12*OFDM_SYMBOL_SIZE_SAMPLES_NO_PREFIX*2);
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*/