patch from Milan Zivkovic (Nokia Bell Labs)

cmake_targets/build_oai

@@ -686,7 +686,7 @@ function main() {
     echo_info "Compiling unitary tests simulators"
     # TODO: fix: dlsim_tm4 pucchsim prachsim pdcchsim pbchsim mbmssim
     #simlist="dlsim_tm4 dlsim ulsim pucchsim prachsim pdcchsim pbchsim mbmssim"
-    simlist="dlsim ulsim"
+    simlist="dlsim ulsim polartest ldpctest"
     for f in $simlist ; do
       compilations \
       lte-simulators $f \

openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_decoder.c

@@ -38,6 +38,9 @@
 #include "nrLDPC_cnProc.h"
 #include "nrLDPC_bnProc.h"
 
+#define NR_LDPC_ENABLE_PARITY_CHECK
+#define NR_LDPC_PROFILER_DETAIL
+
 #ifdef NR_LDPC_DEBUG_MODE
 #include "nrLDPC_tools/nrLDPC_debug.h"
 #endif

openair1/PHY/CODING/nrLDPC_encoder/ldpc_encoder.c

@@ -68,7 +68,7 @@ int encode_parity_check_part_orig(unsigned char *c,unsigned char *d, short BG,sh
     printf("problem with BG\n");
     return(-1);
   }
-  
+
 
   no_punctured_columns=(int)((nrows-2)*Zc+block_length-block_length*3)/Zc;
 

openair1/PHY/CODING/nrLDPC_encoder/ldpc_generate_coefficient.c

@@ -361,7 +361,7 @@ short *choose_generator_matrix(short BG,short Zc)
   return Gen_shift_values;
 }
 
-int ldpc_encoder_orig(unsigned char *test_input,unsigned char *channel_input,short block_length,short BG,unsigned char gen_code)
+int ldpc_encoder_orig(unsigned char *test_input,unsigned char *channel_input,short block_length, short BG,unsigned char gen_code)
 {
   unsigned char c[22*384]; //padded input, unpacked, max size
   unsigned char d[68*384]; //coded output, unpacked, max size
@@ -378,26 +378,30 @@ int ldpc_encoder_orig(unsigned char *test_input,unsigned char *channel_input,sho
   int indlist2[1000];
 
   //determine number of bits in codeword
-  if (BG==1)
-  {
-    Kb = 22;
-    nrows=46; //parity check bits
-    ncols=22; //info bits
-  }
-  else if (BG==2)
-  {
-    nrows=42;  //parity check bits
-    ncols=10;  // info bits
-
-    if (block_length>640)
-      Kb = 10;
-    else if (block_length>560)
-      Kb = 9;
-    else if (block_length>192)
-      Kb = 8;
-    else
-      Kb = 6;
-  }
+  //if (block_length>3840)
+     if (BG==1)
+       {
+         //BG=1;
+         Kb = 22;
+         nrows=46; //parity check bits
+         ncols=22; //info bits
+       }
+       //else if (block_length<=3840)
+      else if	(BG==2)
+       {
+         //BG=2;
+         nrows=42; //parity check bits
+         ncols=10; // info bits
+
+         if (block_length>640)
+   	Kb = 10;
+         else if (block_length>560)
+   	Kb = 9;
+         else if (block_length>192)
+         Kb = 8;
+       else
+         Kb = 6;
+         }
 
   //find minimum value in all sets of lifting size
   Zc=0;
@@ -415,8 +419,6 @@ int ldpc_encoder_orig(unsigned char *test_input,unsigned char *channel_input,sho
     return(-1);
   }
 
-  int K = ncols*Zc;
-
   Gen_shift_values=choose_generator_matrix(BG,Zc);
   if (Gen_shift_values==NULL) {
     printf("ldpc_encoder_orig: could not find generator matrix\n");
@@ -438,15 +440,9 @@ int ldpc_encoder_orig(unsigned char *test_input,unsigned char *channel_input,sho
   }
   
   no_punctured_columns=(int)((nrows-2)*Zc+block_length-block_length*3)/Zc;
-  //nrows - no_punctured_columns = 2 +2*block_length/Zc
   removed_bit=(nrows-no_punctured_columns-2) * Zc+block_length-(block_length*3);
-  // ((nrows-no_punctured_columns) * Zc-removed_bit) =
-  // 2Zc + 2*block_length
   //printf("%d\n",no_punctured_columns);
   //printf("%d\n",removed_bit);
-  //printf("%d\n",nrows-no_punctured_columns);
-  //printf("%d\n",((nrows-no_punctured_columns) * Zc-removed_bit));
-  
   // unpack input
   memset(c,0,sizeof(unsigned char) * ncols * Zc);
   memset(d,0,sizeof(unsigned char) * nrows * Zc);
@@ -614,8 +610,8 @@ int ldpc_encoder_orig(unsigned char *test_input,unsigned char *channel_input,sho
   }
 
   // information part and puncture columns
-  memcpy(&channel_input[0], &c[2*Zc], (block_length-2*Zc)*sizeof(unsigned char)); //systematic bits
-  memcpy(&channel_input[block_length-2*Zc], &d[0], ((nrows-no_punctured_columns) * Zc-removed_bit)*sizeof(unsigned char)); //systematic bits 2Zc + 2*block_length 
+  memcpy(&channel_input[0], &c[2*Zc], (block_length-2*Zc)*sizeof(unsigned char));
+  memcpy(&channel_input[block_length-2*Zc], &d[0], ((nrows-no_punctured_columns) * Zc-removed_bit)*sizeof(unsigned char));
   //memcpy(channel_input,c,Kb*Zc*sizeof(unsigned char));
   return 0;
 }