update nr ue gold to simplified version

openair1/PHY/NR_REFSIG/nr_gold_ue.c

@@ -26,6 +26,7 @@ void nr_gold_pbch(PHY_VARS_NR_UE* ue)
   unsigned int n, x1, x2;
   unsigned int Nid, i_ssb, i_ssb2;
   unsigned char Lmax, l, n_hf, N_hf;
+  uint8_t reset;
 
   Nid = ue->frame_parms.Nid_cell;
   Lmax = ue->frame_parms.Lmax;
@@ -37,24 +38,13 @@ void nr_gold_pbch(PHY_VARS_NR_UE* ue)
       i_ssb = l & (Lmax-1);
       i_ssb2 = i_ssb + (n_hf<<2);
 
-      x1 = 1 + (1<<31);
+      reset = 1;
       x2 = (1<<11) * (i_ssb2 + 1) * ((Nid>>2) + 1) + (1<<6) * (i_ssb2 + 1) + (Nid&3);
       x2 = x2 ^ ((x2 ^ (x2>>1) ^ (x2>>2) ^ (x2>>3))<<31);
 
-      // skip first 50 double words (1600 bits)
-      for (n = 1; n < 50; n++) {
-        x1 = (x1>>1) ^ (x1>>4);
-        x1 = x1 ^ (x1<<31) ^ (x1<<28);
-        x2 = (x2>>1) ^ (x2>>2) ^ (x2>>3) ^ (x2>>4);
-        x2 = x2 ^ (x2<<31) ^ (x2<<30) ^ (x2<<29) ^ (x2<<28);
-      }
-
 	  for (n=0; n<NR_PBCH_DMRS_LENGTH_DWORD; n++) {
-        x1 = (x1>>1) ^ (x1>>4);
-        x1 = x1 ^ (x1<<31) ^ (x1<<28);
-        x2 = (x2>>1) ^ (x2>>2) ^ (x2>>3) ^ (x2>>4);
-        x2 = x2 ^ (x2<<31) ^ (x2<<30) ^ (x2<<29) ^ (x2<<28);
-        ue->nr_gold_pbch[n_hf][l][n] = x1 ^ x2;
+        ue->nr_gold_pbch[n_hf][l][n] = lte_gold_generic(&x1, &x2, reset);
+        reset = 0;
       }
 
     }
@@ -69,6 +59,7 @@ void nr_gold_pdcch(PHY_VARS_NR_UE* ue,
   unsigned char ns,l;
   unsigned int n,x1,x2,x2tmp0;
   unsigned int nid;
+  uint8_t reset;
 
   if (n_idDMRS)
     nid = n_idDMRS;
@@ -79,27 +70,13 @@ void nr_gold_pdcch(PHY_VARS_NR_UE* ue,
 
     for (l=0; l<length_dmrs; l++) {
 
-      x2tmp0 = ((14*ns+l+1)*((nid<<1)+1))<<17;
+      reset = 1;
+      x2tmp0 = ((ue->frame_parms.symbols_per_slot*ns+l+1)*((nid<<1)+1))<<17;
       x2 = (x2tmp0+(nid<<1))%(1<<31);  //cinit
       
-      x1 = 1+ (1<<31);
-      x2=x2 ^ ((x2 ^ (x2>>1) ^ (x2>>2) ^ (x2>>3))<<31);
-
-      // skip first 50 double words (1600 bits)
-      for (n=1; n<50; n++) {
-        x1 = (x1>>1) ^ (x1>>4);
-        x1 = x1 ^ (x1<<31) ^ (x1<<28);
-        x2 = (x2>>1) ^ (x2>>2) ^ (x2>>3) ^ (x2>>4);
-        x2 = x2 ^ (x2<<31) ^ (x2<<30) ^ (x2<<29) ^ (x2<<28);
-        //printf("x1 : %x, x2 : %x\n",x1,x2);
-      }
-      for (n=0; n<52; n++) {
-        x1 = (x1>>1) ^ (x1>>4);
-        x1 = x1 ^ (x1<<31) ^ (x1<<28);
-        x2 = (x2>>1) ^ (x2>>2) ^ (x2>>3) ^ (x2>>4);
-        x2 = x2 ^ (x2<<31) ^ (x2<<30) ^ (x2<<29) ^ (x2<<28);
-        ue->nr_gold_pdcch[0][ns][l][n] = x1^x2;
-        // if (ns==1 && l==0) printf("n=%d : c %x\n",n,x1^x2);
+      for (n=0; n<NR_MAX_PDCCH_DMRS_INIT_LENGTH_DWORD; n++) {
+        ue->nr_gold_pdcch[0][ns][l][n] = lte_gold_generic(&x1, &x2, reset);
+        reset = 0;
       }    
     }
   }
@@ -112,6 +89,7 @@ void nr_gold_pdsch(PHY_VARS_NR_UE* ue,
   unsigned int n,x1,x2,x2tmp0;
   int nscid;
   unsigned int nid;
+  uint8_t reset;
 
   /// to be updated from higher layer
   //unsigned short lbar = 0;
@@ -126,33 +104,16 @@ void nr_gold_pdsch(PHY_VARS_NR_UE* ue,
 
     for (ns=0; ns<ue->frame_parms.slots_per_frame; ns++) {
 
-      for (l=0; l<14; l++) {
+      for (l=0; l<ue->frame_parms.symbols_per_slot; l++) {
 
-        x2tmp0 = ((14*ns+l+1)*((nid<<1)+1))<<17;
+        reset = 1;
+        x2tmp0 = ((ue->frame_parms.symbols_per_slot*ns+l+1)*((nid<<1)+1))<<17;
         x2 = (x2tmp0+(nid<<1)+nscid)%(1<<31);  //cinit
         LOG_D(PHY,"UE DMRS slot %d, symb %d, x2 %x, nscid %d\n",ns,l,x2,nscid);
-        //printf("ns %d gold pdsch x2 %d\n",ns,x2);
-
-        x1 = 1+ (1<<31);
-        x2=x2 ^ ((x2 ^ (x2>>1) ^ (x2>>2) ^ (x2>>3))<<31);
-
-        // skip first 50 double words (1600 bits)
-        for (n=1; n<50; n++) {
-          x1 = (x1>>1) ^ (x1>>4);
-          x1 = x1 ^ (x1<<31) ^ (x1<<28);
-          x2 = (x2>>1) ^ (x2>>2) ^ (x2>>3) ^ (x2>>4);
-          x2 = x2 ^ (x2<<31) ^ (x2<<30) ^ (x2<<29) ^ (x2<<28);
-          //printf("x1 : %x, x2 : %x\n",x1,x2);
-        }
         
         for (n=0; n<NR_MAX_PDSCH_DMRS_INIT_LENGTH_DWORD; n++) {
-          x1 = (x1>>1) ^ (x1>>4);
-          x1 = x1 ^ (x1<<31) ^ (x1<<28);
-          x2 = (x2>>1) ^ (x2>>2) ^ (x2>>3) ^ (x2>>4);
-          x2 = x2 ^ (x2<<31) ^ (x2<<30) ^ (x2<<29) ^ (x2<<28);
-          ue->nr_gold_pdsch[0][ns][l][nscid][n] = x1^x2;
-          // if ((ns==2)&&(l==0))
-          //printf("n=%d : c %x\n",n,x1^x2);
+			ue->nr_gold_pdsch[0][ns][l][nscid][n] = lte_gold_generic(&x1, &x2, reset);
+			reset = 0;
 		}
       }
     }