prach data seems ok but no rx yet

openair1/PHY/LTE_TRANSPORT/if4_tools.c

@@ -139,7 +139,7 @@ void send_IF4(PHY_VARS_eNB *eNB, int frame, int subframe, uint16_t packet_type,
     gen_IF4_prach_header(prach_header, frame, subframe);
 		    
     memcpy((int16_t*)(tx_buffer + MAC_HEADER_SIZE_BYTES + sizeof_IF4_header_t),
-           (&rxsigF[0][0]+k), 
+           (&rxsigF[0][k]), 
            db_fulllength*sizeof(int16_t));
     			              
     if ((eNB->ifdevice.trx_write_func(&eNB->ifdevice,

openair1/PHY/LTE_TRANSPORT/prach.c

@@ -1104,7 +1104,12 @@ void rx_prach(PHY_VARS_eNB *eNB,
   for (aa=0; aa<nb_ant_rx; aa++) {
     prach[aa] = (int16_t*)&eNB->common_vars.rxdata[0][aa][subframe*eNB->frame_parms.samples_per_tti-eNB->N_TA_offset];
   }
-
+  
+  int energy = dB_fixed(signal_energy(prach[0], eNB->frame_parms.samples_per_tti));
+  //if (energy >= 45) {
+  //  printf("prach subframe energy %d\n",energy);
+  //} 
+    
   // First compute physical root sequence
   if (restricted_set == 0) {
     if (Ncs_config>15) {
@@ -1285,7 +1290,36 @@ void rx_prach(PHY_VARS_eNB *eNB,
     send_IF4(eNB, eNB->proc.frame_rx, eNB->proc.subframe_rx, IF4_PRACH, k);
     VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_SEND_IF4, 0 );   
 
+    energy = dB_fixed(signal_energy(&rxsigF[0][k], 839));
+    if (energy >=45) {
+      printf("<frame %d> prach freq-domain energy %d\n",eNB->proc.frame_rx, energy);     
+      //write_output("beforecomp.m","rxF",&rxsigF[0][k],839*2,1,0);        
+      //exit(1);
+    }    
+
     return;
+  } else if (eNB->node_function == NGFI_RCC_IF4) {
+    k = (12*n_ra_prb) - 6*eNB->frame_parms.N_RB_UL;
+    
+    if (k<0) {
+      k+=(eNB->frame_parms.ofdm_symbol_size);
+    }
+
+    k*=12;
+    k+=13; 
+    k*=2;
+
+    // Adjust received rxsigF offset    
+    memmove((&rxsigF[0][k]),
+            (&rxsigF[0][0]),
+            839*2*sizeof(int16_t));     
+                      
+    energy = dB_fixed(signal_energy(&rxsigF[0][k], 839));
+    if (energy >=45) {
+      printf("<frame %d> prach freq-domain energy %d\n",eNB->proc.frame_rx, energy);
+      //write_output("aftercomp.m","rxF",&rxsigF[0][k],839*2,1,0);        
+      //exit(1);        
+    }
   }
   
   // in case of RCC and prach received rx_thread wakes up prach

openair1/SCHED/phy_procedures_lte_eNb.c

@@ -2641,11 +2641,12 @@ void phy_procedures_eNB_common_RX(PHY_VARS_eNB *eNB,const uint8_t abstraction_fl
       }
     	VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_ENB_SLOT_FEP,0);
 
-      if (eNB->node_function == NGFI_RRU_IF4 && is_prach_subframe(fp, proc->frame_rx, proc->subframe_rx)<=0) {
+      if (eNB->node_function == NGFI_RRU_IF4) {
         /// **** send_IF4 of rxdataF to RCC (no prach now) **** ///
         VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_SEND_IF4, 1 );   
-        send_IF4(eNB, frame, subframe, IF4_PULFFT, 0);
+        send_IF4(eNB, proc->frame_rx, proc->subframe_rx, IF4_PULFFT, 0);
         VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_SEND_IF4, 0 );   
+
       }
 
       /// **** send_IF4 of prach to RCC **** /// done in prach thread (below)
@@ -2735,7 +2736,7 @@ void phy_procedures_eNB_common_RX(PHY_VARS_eNB *eNB,const uint8_t abstraction_fl
           }
         }
 
-      } while( (symbol_mask != symbol_mask_full) && (prach_rx == 0));    
+      } while(symbol_mask != symbol_mask_full);    
 
       if (proc->first_rx == 0) {
         if (proc->subframe_rx != subframe){
@@ -2753,8 +2754,6 @@ void phy_procedures_eNB_common_RX(PHY_VARS_eNB *eNB,const uint8_t abstraction_fl
       VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME( VCD_SIGNAL_DUMPER_VARIABLES_TRX_TS, proc->timestamp_rx&0xffffffff );
       VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME( VCD_SIGNAL_DUMPER_VARIABLES_FRAME_NUMBER_RX_ENB, proc->frame_rx );
       VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME( VCD_SIGNAL_DUMPER_VARIABLES_SUBFRAME_NUMBER_RX_ENB, proc->subframe_rx );
-
-      // Tobi aka mr monaco: ETH
 		  
     } else { // should not get here
       AssertFatal(1==0, "Unknown eNB->node_function %d",eNB->node_function);