updated slot fep for numerology 0

fixed a bug in UE

executables/nr-ue.c

@@ -748,7 +748,7 @@ void *UE_thread(void *arg) {
 
     for (int i=0; i<UE->frame_parms.nb_antennas_rx; i++)
       rxp[i] = (void *)&UE->common_vars.rxdata[i][UE->frame_parms.ofdm_symbol_size+
--              UE->frame_parms.nb_prefix_samples0+UE->frame_parms.
+               UE->frame_parms.nb_prefix_samples0+UE->frame_parms.
                get_samples_slot_timestamp(slot_nr,&UE->frame_parms,0)];
 
     for (int i=0; i<UE->frame_parms.nb_antennas_tx; i++)
@@ -893,4 +893,4 @@ int8_t find_dlsch(uint16_t rnti,
   abort();
 }
 
-void multicast_link_write_sock(int groupP, char *dataP, uint32_t sizeP) {}
\ No newline at end of file
+void multicast_link_write_sock(int groupP, char *dataP, uint32_t sizeP) {}

openair1/PHY/INIT/nr_parms.c

@@ -184,7 +184,7 @@ void set_scs_parameters (NR_DL_FRAME_PARMS *fp, int mu, uint16_t bw)
         case 90:
         case 100:
       default:
-        AssertFatal(1==0,"Number of resource blocks %d undefined for mu %d, frame parms = %p\n", fp->N_RB_DL, mu, fp);
+        AssertFatal(1==0,"Bandwidth of %d MHz undefined for mu %d, frame parms = %p\n", bw, mu, fp);
       }
       break;
 
@@ -223,10 +223,14 @@ void set_scs_parameters (NR_DL_FRAME_PARMS *fp, int mu, uint16_t bw)
 
 uint32_t get_samples_per_slot(int slot, NR_DL_FRAME_PARMS* fp)
 {
-  if(slot%(fp->slots_per_subframe/2))
-    return fp->samples_per_slotN0;
+  uint32_t samp_count;
+
+  if(fp->numerology_index == 0)
+    samp_count = fp->samples_per_subframe;
   else
-    return fp->samples_per_slot0;
+    samp_count = (slot%(fp->slots_per_subframe/2)) ? fp->samples_per_slotN0 : fp->samples_per_slot0;
+
+  return samp_count;
 }
 
 uint32_t get_samples_slot_timestamp(int slot, NR_DL_FRAME_PARMS* fp, uint8_t sl_ahead)

openair1/PHY/MODULATION/slot_fep_nr.c

@@ -46,6 +46,7 @@ int nr_slot_fep(PHY_VARS_NR_UE *ue,
   unsigned char aa;
   unsigned int nb_prefix_samples;
   unsigned int nb_prefix_samples0;
+  unsigned int abs_symbol;
   if (ue->is_synchronized) {
     nb_prefix_samples = (no_prefix ? 0 : frame_parms->nb_prefix_samples);
     nb_prefix_samples0 = (no_prefix ? 0 : frame_parms->nb_prefix_samples0);
@@ -125,7 +126,7 @@ int nr_slot_fep(PHY_VARS_NR_UE *ue,
   for (aa=0; aa<frame_parms->nb_antennas_rx; aa++) {
     memset(&common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[Ns]].rxdataF[aa][frame_parms->ofdm_symbol_size*symbol],0,frame_parms->ofdm_symbol_size*sizeof(int));
 
-    rx_offset = sample_offset + slot_offset + nb_prefix_samples0 - SOFFSET;
+    rx_offset = sample_offset + slot_offset - SOFFSET;
     // Align with 256 bit
     //    rx_offset = rx_offset&0xfffffff8;
 
@@ -135,8 +136,16 @@ int nr_slot_fep(PHY_VARS_NR_UE *ue,
     		ue->proc.proc_rxtx[(Ns)&1].frame_rx, Ns, symbol, nb_prefix_samples, nb_prefix_samples0, slot_offset, sample_offset, rx_offset, frame_length_samples);
 #endif
 
-    if (symbol==0) {
+    abs_symbol = Ns * frame_parms->symbols_per_slot + symbol;
+    
+    for (int idx_symb = Ns*frame_parms->symbols_per_slot; idx_symb < abs_symbol; idx_symb++)
+      rx_offset += (abs_symbol%(0x7<<frame_parms->numerology_index)) ? nb_prefix_samples : nb_prefix_samples0;
 
+    rx_offset += frame_parms->ofdm_symbol_size * symbol;
+
+    if (abs_symbol%(0x7<<frame_parms->numerology_index)) {
+
+      rx_offset += nb_prefix_samples0;
       if (rx_offset > (frame_length_samples - frame_parms->ofdm_symbol_size))
         memcpy((short*) &common_vars->rxdata[aa][frame_length_samples],
                (short*) &common_vars->rxdata[aa][0],
@@ -161,9 +170,7 @@ int nr_slot_fep(PHY_VARS_NR_UE *ue,
       }
     } else {
 
-      rx_offset += (frame_parms->ofdm_symbol_size+nb_prefix_samples)*symbol;
-      //                  + (frame_parms->ofdm_symbol_size+nb_prefix_samples)*(l-1);
-
+      rx_offset += frame_parms->nb_prefix_samples;
       if (rx_offset > (frame_length_samples - frame_parms->ofdm_symbol_size))
         memcpy((void *) &common_vars->rxdata[aa][frame_length_samples],
                (void *) &common_vars->rxdata[aa][0],