optimized polar encoder in pbch_nr.c

openair1/PHY/CODING/nrPolar_tools/nr_polar_decoder.c

@@ -1151,7 +1151,7 @@ uint32_t polar_decoder_int16(int16_t *input,
     crc = (uint64_t)(crc24c(A64_flip,len)>>8);
   }
 
-#if 1
+#if 0
   printf("A %llx B %llx|%llx Cprime %llx|%llx  (crc %x,rxcrc %llx %d)\n",
 	 Ar,
 	 B[1],B[0],Cprime[1],Cprime[0],crc,

openair1/PHY/NR_TRANSPORT/nr_pbch.c

@@ -37,7 +37,7 @@
 #include "PHY/sse_intrin.h"
 
 //#define DEBUG_PBCH
-#define DEBUG_PBCH_ENCODING
+//#define DEBUG_PBCH_ENCODING
 //#define DEBUG_PBCH_DMRS
 
 #include "PHY/NR_REFSIG/nr_mod_table.h"
@@ -250,7 +250,6 @@ int nr_generate_pbch(NR_gNB_PBCH *pbch,
   uint16_t M;
   uint8_t nushift;
   uint32_t unscrambling_mask;
-  uint64_t a_reversed=0;
 
   LOG_I(PHY, "PBCH generation started\n");
 
@@ -305,14 +304,8 @@ int nr_generate_pbch(NR_gNB_PBCH *pbch,
   printf("pbch_a_prime: 0x%08x\n", pbch->pbch_a_prime);
 #endif
 
-
-  // Encoder reversal
-  for (int i=0; i<NR_POLAR_PBCH_PAYLOAD_BITS; i++)
-    a_reversed |= (((uint64_t)pbch->pbch_a_prime>>i)&1)<<(31-i);
-
-
   /// CRC, coding and rate matching
-  polar_encoder_fast (&a_reversed, (uint32_t*)pbch->pbch_e, 0, polar_params);
+  polar_encoder_fast (&pbch->pbch_a_prime, (uint32_t*)pbch->pbch_e, 0, polar_params);
 #ifdef DEBUG_PBCH_ENCODING
   printf("Channel coding:\n");
   for (int i=0; i<NR_POLAR_PBCH_E_DWORD; i++)

openair1/PHY/NR_UE_TRANSPORT/nr_pbch.c

@@ -675,7 +675,7 @@ int nr_rx_pbch( PHY_VARS_NR_UE *ue,
 
   if(decoderState > 0)	return(decoderState);
   	
-  printf("polar decoder output 0x%08x\n",nr_ue_pbch_vars->pbch_a_prime);
+  //  printf("polar decoder output 0x%08x\n",nr_ue_pbch_vars->pbch_a_prime);
   
   //payload un-scrambling
   memset(&nr_ue_pbch_vars->pbch_a_interleaved, 0, sizeof(uint32_t) );