gNB: making n_ssb_crb a function of n_rb_dl (this should become a config paramerter later)

nr-UE: bugfixes
pbchsim: adding options to input/output signal files

openair1/PHY/INIT/nr_init.c

@@ -419,7 +419,7 @@ void nr_phy_config_request(NR_PHY_Config_t *phy_config)
   gNB_config->rf_config.ul_carrier_bandwidth.value      = phy_config->cfg->rf_config.ul_carrier_bandwidth.value;//106;
   gNB_config->sch_config.half_frame_index.value         = 0;
   gNB_config->sch_config.ssb_subcarrier_offset.value    = phy_config->cfg->sch_config.ssb_subcarrier_offset.value;//0;
-  gNB_config->sch_config.n_ssb_crb.value                = 86;
+  gNB_config->sch_config.n_ssb_crb.value                = (phy_config->cfg->rf_config.dl_carrier_bandwidth.value-20)>>1;
   gNB_config->sch_config.physical_cell_id.value         = phy_config->cfg->sch_config.physical_cell_id.value;
 
   if (phy_config->cfg->subframe_config.duplex_mode.value == 0) {

openair1/PHY/NR_UE_TRANSPORT/pss_nr.c

@@ -838,14 +838,15 @@ int pss_search_time_nr(int **rxdata, ///rx data in time domain
   /* Search pss in the received buffer each 4 samples which ensures a memory alignment on 128 bits (32 bits x 4 ) */
   /* This is required by SIMD (single instruction Multiple Data) Extensions of Intel processors. */
   /* Correlation computation is based on a a dot product which is realized thank to SIMS extensions */
-  for (int pss_index = 0; pss_index < NUMBER_PSS_SEQUENCE; pss_index++) avg[pss_index]=0;
+  for (int pss_index = 0; pss_index < NUMBER_PSS_SEQUENCE; pss_index++) {
+    avg[pss_index]=0;
+    memset(pss_corr_ue[pss_index],0,length*sizeof(int64_t)); 
+  }
 
-  for (n=0; n < length; n+=4) {
+  for (n=0; n < length; n+=4) { //
 
     for (int pss_index = 0; pss_index < NUMBER_PSS_SEQUENCE; pss_index++) {
 
-      pss_corr_ue[pss_index][n] = 0; /* clean correlation for position n */
-
       if ( n < (length - frame_parms->ofdm_symbol_size)) {
 
         /* calculate dot product of primary_synchro_time_nr and rxdata[ar][n] (ar=0..nb_ant_rx) and store the sum in temp[n]; */
@@ -886,24 +887,19 @@ int pss_search_time_nr(int **rxdata, ///rx data in time domain
 
   LOG_I(PHY,"[UE] nr_synchro_time: Sync source = %d, Peak found at pos %d, val = %llu (%d dB) avg %d dB\n", pss_source, peak_position, (unsigned long long)peak_value, dB_fixed64(peak_value),dB_fixed64(avg[pss_source]));
 
-//#ifdef DEBUG_PSS_NR
-
-#define  PSS_DETECTION_FLOOR_NR     (31)
-  if (peak_value < 5*avg[pss_source]) { //PSS_DETECTION_FLOOR_NR)
-
+  if (peak_value < 5*avg[pss_source])
     return(-1);
-  }
-//#endif
+
 
 #ifdef DBG_PSS_NR
 
-  static debug_cnt = 0;
+  static int debug_cnt = 0;
 
   if (debug_cnt == 0) {
-    /*    LOG_M("pss_corr_ue0.m","pss_corr_ue0",pss_corr_ue[0],length,1,6);
+    LOG_M("pss_corr_ue0.m","pss_corr_ue0",pss_corr_ue[0],length,1,6);
     LOG_M("pss_corr_ue1.m","pss_corr_ue1",pss_corr_ue[1],length,1,6);
     LOG_M("pss_corr_ue2.m","pss_corr_ue2",pss_corr_ue[2],length,1,6);
-    LOG_M("rxdata0.m","rxd0",rxdata[0],length,1,1); */
+    LOG_M("rxdata0.m","rxd0",rxdata[0],length,1,1); 
   } else {
     debug_cnt++;
   }

openair1/SIMULATION/NR_PHY/pbchsim.c

@@ -379,7 +379,7 @@ int main(int argc, char **argv)
     exit(-1);
   }
 
-  frame_length_complex_samples = frame_parms->samples_per_subframe;
+  frame_length_complex_samples = frame_parms->samples_per_subframe*NR_NUMBER_OF_SUBFRAMES_PER_FRAME;
   frame_length_complex_samples_no_prefix = frame_parms->samples_per_subframe_wCP;
 
   s_re = malloc(2*sizeof(double*));
@@ -432,7 +432,6 @@ int main(int argc, char **argv)
     gNB->pbch_configured = 1;
     for (int i=0;i<4;i++) gNB->pbch_pdu[i]=i+1;
     nr_common_signal_procedures (gNB,frame,subframe);
-  }
 
     /*  
 	LOG_M("txsigF0.m","txsF0", gNB->common_vars.txdataF[0],frame_length_complex_samples_no_prefix,1,1);
@@ -455,11 +454,25 @@ int main(int argc, char **argv)
 			     frame_parms);
       }
     }
-  /*
+  } else {
+    printf("Reading %d samples from file to antenna buffer %d\n",frame_length_complex_samples,0);
+    
+    if (fread(txdata[0],
+	      sizeof(int32_t),
+	      frame_length_complex_samples,
+	      input_fd) != frame_length_complex_samples) {
+      printf("error reading from file\n");
+      exit(-1);
+    }
+  }
+
   LOG_M("txsig0.m","txs0", txdata[0],frame_length_complex_samples,1,1);
   if (gNB->frame_parms.nb_antennas_tx>1)
     LOG_M("txsig1.m","txs1", txdata[1],frame_length_complex_samples,1,1);
-  */
+
+  if (output_fd) 
+    fwrite(txdata[0],sizeof(int32_t),frame_length_complex_samples,output_fd);
+
   int txlev = signal_energy(&txdata[0][5*frame_parms->ofdm_symbol_size + 4*frame_parms->nb_prefix_samples + frame_parms->nb_prefix_samples0],
 			    frame_parms->ofdm_symbol_size + frame_parms->nb_prefix_samples);
 
@@ -568,9 +581,12 @@ int main(int argc, char **argv)
   free(r_im);
   free(txdata);
 
-  if (write_output_file)
+  if (output_fd)
     fclose(output_fd);
 
+  if (input_fd)
+    fclose(input_fd);
+
   return(n_errors);
 
 }

targets/RT/USER/nr-ue.c

@@ -435,7 +435,7 @@ static void *UE_thread_synch(void *arg) {
 #endif
             if (nr_initial_sync( UE, UE->mode ) == 0) {
 
-                hw_slot_offset = (UE->rx_offset<<1) / UE->frame_parms.samples_per_tti;
+                hw_slot_offset = (UE->rx_offset<<1) / UE->frame_parms.samples_per_subframe;
                 printf("Got synch: hw_slot_offset %d, carrier off %d Hz, rxgain %d (DL %u, UL %u), UE_scan_carrier %d\n",
                        hw_slot_offset,
                        freq_offset,
@@ -488,6 +488,7 @@ static void *UE_thread_synch(void *arg) {
                         break;
                     }
 
+		if (UE->mode != loop_through_memory) {
 		  UE->rfdevice.trx_set_freq_func(&UE->rfdevice,&openair0_cfg[0],0);
 		  //UE->rfdevice.trx_set_gains_func(&openair0,&openair0_cfg[0]);
 		  //UE->rfdevice.trx_stop_func(&UE->rfdevice);
@@ -497,6 +498,7 @@ static void *UE_thread_synch(void *arg) {
 		    LOG_E(HW,"Could not start the device\n");
 		    oai_exit=1;
                   }*/
+		}
 
 		if (UE->UE_scan_carrier == 1) {