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Applying LDPC code rate fix at nr_ulsch_encoding

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This commit is contained in:
Khalid Ahmed
2019-03-07 11:35:18 +01:00
committed by Thomas Schlichter
parent bc53a0a771
commit d7abeed6ab
1 changed files with 26 additions and 12 deletions
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openair1/PHY/NR_UE_TRANSPORT/nr_ulsch_coding.c
+26 -12
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@@ -200,18 +200,19 @@ int nr_ulsch_encoding(NR_UE_ULSCH_t *ulsch,
NR_UL_UE_HARQ_t *harq_process;
uint16_t nb_rb ;
uint8_t nb_symb_sch ;
uint32_t A, Z;
uint32_t A, Z, F;
uint32_t *pz;
uint8_t mod_order;
uint16_t Kr,r,r_offset,Kr_bytes;
uint8_t *d_tmp[MAX_NUM_DLSCH_SEGMENTS];
uint8_t kb,BG;
uint8_t BG;
uint32_t E;
uint8_t Ilbrm;
uint32_t Tbslbrm;
uint8_t nb_re_dmrs;
uint16_t length_dmrs;
int i;
float Coderate;
///////////
///////////////////////////////////////////////////////////////////////////////////////
@@ -230,10 +231,12 @@ int nr_ulsch_encoding(NR_UE_ULSCH_t *ulsch,
Kr=0;
r_offset=0;
BG = 1;
F=0;
Ilbrm = 0;
Tbslbrm = 950984; //max tbs
nb_re_dmrs = ulsch->nb_re_dmrs;
length_dmrs = 1;
Coderate = 0.0;
///////////
/////////////////////////////////////////////////////////////////////////////////////////
@@ -251,7 +254,7 @@ int nr_ulsch_encoding(NR_UE_ULSCH_t *ulsch,
G = nr_get_G(nb_rb, nb_symb_sch, nb_re_dmrs, length_dmrs,mod_order,harq_process->Nl);
LOG_D(PHY,"dlsch coding A %d G %d mod_order %d\n", A,G, mod_order);
LOG_D(PHY,"ulsch coding A %d G %d mod_order %d\n", A,G, mod_order);
printf("ulsch coding A %d G %d mod_order %d\n", A,G, mod_order);
Tbslbrm = nr_compute_tbs(28,nb_rb,frame_parms->symbols_per_slot,0,0, harq_process->Nl);
@@ -266,7 +269,7 @@ int nr_ulsch_encoding(NR_UE_ULSCH_t *ulsch,
///////////
/*
int i;
printf("dlsch (tx): \n");
printf("ulsch (tx): \n");
for (i=0;i<(A>>3);i++)
printf("%02x.",a[i]);
printf("\n");
@@ -297,13 +300,15 @@ int nr_ulsch_encoding(NR_UE_ULSCH_t *ulsch,
pz,
&harq_process->F);
kb = harq_process->K/(*pz);
if ( kb==22){
BG = 1;
}
else{
BG = 2;
}
F = harq_process->F;
Coderate = (float) A /(float) G;
if ((A <=292) || ((A<=3824) && (Coderate <= 0.6667)) || Coderate <= 0.25){
BG = 2;
}
else{
BG = 1;
}
Kr = harq_process->K;
Kr_bytes = Kr>>3;
@@ -316,7 +321,7 @@ int nr_ulsch_encoding(NR_UE_ULSCH_t *ulsch,
///////////////////////// c---->| LDCP coding |---->d /////////////////////////
///////////
//printf("segment Z %d kb %d k %d Kr %d BG %d\n", *pz,kb,harq_process->K,Kr,BG);
//printf("segment Z %d k %d Kr %d BG %d\n", *pz,harq_process->K,Kr,BG);
//start_meas(te_stats);
for (r=0; r<harq_process->C; r++) {
@@ -364,6 +369,15 @@ int nr_ulsch_encoding(NR_UE_ULSCH_t *ulsch,
}
for (r=0; r<harq_process->C; r++) { // looping over C segments
if (harq_process->F>0) {
for (int k=(Kr-F-2*(*pz)); k<Kr-2*(*pz); k++) {
harq_process->d[r][k] = NR_NULL;
//if (k<(Kr-F+8))
//printf("r %d filler bits [%d] = %d \n", r,k, harq_process->d[r][k]);
}
}
#ifdef DEBUG_DLSCH_CODING
printf("Rate Matching, Code segment %d (coded bits (G) %d,unpunctured/repeated bits per code segment %d,mod_order %d, nb_rb %d)...\n",
r,