update

openair1/PHY/NR_REFSIG/nr_gold.c

@@ -45,6 +45,7 @@ void nr_init_pbch_dmrs(PHY_VARS_gNB* gNB)
 
       for (uint8_t n=0; n<NR_PBCH_DMRS_LENGTH_DWORD; n++) {
         gNB->nr_gold_pbch_dmrs[n_hf][l][n] = lte_gold_generic(&x1, &x2, reset);
+        //printf("%d \n",gNB->nr_gold_pbch_dmrs[n_hf][l][n]); 
         reset = 0;
       }
 
@@ -183,10 +184,8 @@ void nr_init_prs(PHY_VARS_gNB* gNB)
 
       for (uint8_t n=0; n<NR_MAX_PRS_INIT_LENGTH_DWORD; n++) {
         gNB->nr_gold_prs[slotNum][symNum][n] = lte_gold_generic(&x1, &x2, reset);      
-	//printf("%d \n",gNB->nr_gold_prs[slotNum][symNum][n]);
+        reset = 0;
-	//printf("printing x1= %d \n",x1);	
+        //printf("%d \n",gNB->nr_gold_prs[slotNum][symNum][n]); 
-	//printf("printing x2= %d \n",x2);        
-	reset = 0;
 	
       }
     }

openair1/PHY/NR_REFSIG/nr_refsig.h

@@ -32,6 +32,13 @@
 @param PHY_VARS_gNB* gNB structure provides configuration, frame parameters and the pointers to the 32 bits sequence storage tables
  */
 void nr_init_pbch_dmrs(PHY_VARS_gNB* gNB);
+
+/*
+This function generates NR Gold Sequence(ts 138.211) for the PRS.
+@param PHY_VARS_gNB* gNB structure provides configuration, frame parameters and the pointers to the 32 bits sequence storage tables
+*/
+void nr_init_prs(PHY_VARS_gNB* gNB);
+
 /*!\brief This function generates the NR Gold sequence (38-211, Sec 5.2.1) for the PDCCH DMRS.
 @param PHY_VARS_gNB* gNB structure provides configuration, frame parameters and the pointers to the 32 bits sequence storage tables
 @param Nid is used for the initialization of x2, Physical cell Id by default or upper layer configured pdcch_scrambling_ID

openair1/PHY/NR_TRANSPORT/nr_prs.c

@@ -2,6 +2,7 @@
 #include "PHY/defs_gNB.h"
 #include "PHY/NR_TRANSPORT/nr_transport_proto.h"
 #include "PHY/LTE_REFSIG/lte_refsig.h"
+#include "PHY/NR_REFSIG/nr_refsig.h"
 #include "PHY/sse_intrin.h"
 
 #define DEBUG_PRS
@@ -16,7 +17,7 @@ int nr_generate_prs(uint32_t *nr_gold_prs,
                           NR_DL_FRAME_PARMS *frame_parms) {
   //int k,l;
   //int16_t a;
-  int16_t mod_prs[NR_MAX_PRS_INIT_LENGTH_DWORD<<1];
+  int16_t mod_prs[NR_MAX_PRS_LENGTH<<1];
   uint8_t idx=0;
   uint8_t nushift = config->cell_config.phy_cell_id.value &3;
   LOG_D(PHY, "PRS mapping started at symbol %d shift %d\n", ssb_start_symbol+1, nushift);

openair1/SCHED_NR/phy_procedures_nr_gNB.c

@@ -94,11 +94,22 @@ void nr_common_signal_procedures (PHY_VARS_gNB *gNB,int frame,int slot,nfapi_nr_
   nr_generate_pss(gNB->d_pss, &txdataF[0][txdataF_offset], AMP, ssb_start_symbol, cfg, fp);
   nr_generate_sss(gNB->d_sss, &txdataF[0][txdataF_offset], AMP, ssb_start_symbol, cfg, fp);
   
+  //nr_generate_prs(gNB->nr_gold_prs[n_hf][ssb_index&7],&txdataF[0][txdataF_offset], AMP, ssb_start_symbol, cfg, fp);
+  
+
   if (cfg->carrier_config.num_tx_ant.value <= 4)
     nr_generate_pbch_dmrs(gNB->nr_gold_pbch_dmrs[n_hf][ssb_index&7],&txdataF[0][txdataF_offset], AMP, ssb_start_symbol, cfg, fp);
+
   else
     nr_generate_pbch_dmrs(gNB->nr_gold_pbch_dmrs[0][ssb_index&7],&txdataF[0][txdataF_offset], AMP, ssb_start_symbol, cfg, fp);
     
+    
+  if (cfg->carrier_config.num_tx_ant.value <= 4)
+    nr_generate_prs(gNB->nr_gold_prs[n_hf][ssb_index&7],&txdataF[0][txdataF_offset], AMP, ssb_start_symbol, cfg, fp);
+  else 
+    nr_generate_prs(gNB->nr_gold_prs[0][ssb_index&7],&txdataF[0][txdataF_offset], AMP, ssb_start_symbol, cfg, fp);
+
+
   if (T_ACTIVE(T_GNB_PHY_MIB)) {
     unsigned char bch[3];
     bch[0] = ssb_pdu.ssb_pdu_rel15.bchPayload & 0xff;
@@ -154,9 +165,6 @@ void phy_procedures_gNB_TX(PHY_VARS_gNB *gNB,
     n_hf=1;
     
 
-  
-
-
   if ((cfg->cell_config.frame_duplex_type.value == TDD) &&
       (nr_slot_select(cfg,frame,slot) == NR_UPLINK_SLOT)) return;
 
@@ -234,10 +242,9 @@ void phy_procedures_gNB_TX(PHY_VARS_gNB *gNB,
   // check if we have prs to transmit in this frame and slot
     
   if (cfg->carrier_config.num_tx_ant.value <= 4)
-    nr_generate_prs(gNB->nr_gold_pbch_dmrs[n_hf][ssb_index&7],&txdataF[0][txdataF_offset], AMP, ssb_start_symbol, cfg, fp);
+    nr_generate_prs(gNB->nr_gold_prs[n_hf][ssb_index&7],&txdataF[0][txdataF_offset], AMP, ssb_start_symbol, cfg, fp);
   else 
-    nr_generate_prs(gNB->nr_gold_pbch_dmrs[0][ssb_index&7],&txdataF[0][txdataF_offset], AMP, ssb_start_symbol, cfg, fp);
+    nr_generate_prs(gNB->nr_gold_prs[0][ssb_index&7],&txdataF[0][txdataF_offset], AMP, ssb_start_symbol, cfg, fp);
-
 
   if (do_meas==1) stop_meas(&gNB->phy_proc_tx);