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Handle larger RB step size in precoding

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This commit is contained in:
Raymond Knopp
2025-10-09 16:01:09 +02:00
committed by Laurent THOMAS
parent be236d450e
commit 8711556d9e
1 changed files with 4 additions and 2 deletions
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openair1/PHY/NR_TRANSPORT/nr_dlsch.c
+4 -2
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@@ -470,12 +470,14 @@ static inline void do_txdataF(c16_t **txdataF,
// get pmi info // get pmi info
const int pmi = (pb->prg_size > 0) ? (pb->prgs_list[(int)rb / pb->prg_size].pm_idx) : 0; const int pmi = (pb->prg_size > 0) ? (pb->prgs_list[(int)rb / pb->prg_size].pm_idx) : 0;
const int pmi2 = (rb < (rel15->rbSize - 1) && pb->prg_size > 0) ? (pb->prgs_list[(int)(rb + 1) / pb->prg_size].pm_idx) : -1; const int pmi2 = (rb < (rel15->rbSize - 1) && pb->prg_size > 0) ? (pb->prgs_list[(int)(rb + 1) / pb->prg_size].pm_idx) : -1;
const int pmi3 = (rb < (rel15->rbSize - 2) && pb->prg_size > 0) ? (pb->prgs_list[(int)(rb + 2) / pb->prg_size].pm_idx) : -1;
const int pmi4 = (rb < (rel15->rbSize - 3) && pb->prg_size > 0) ? (pb->prgs_list[(int)(rb + 3) / pb->prg_size].pm_idx) : -1;
// If pmi of next RB and pmi of current RB are the same, we do 2 RB in a row // If pmi of next RB and pmi of current RB are the same, we do 2 RB in a row
// if pmi differs, or current rb is the end (rel15->rbSize - 1), than we do 1 RB in a row // if pmi differs, or current rb is the end (rel15->rbSize - 1), than we do 1 RB in a row
const int rb_step = pmi == pmi2 ? 2 : 1; int rb_step0 = pmi == pmi2 ? 2 : 1;
const int rb_step = rb_step0==2 && pmi3==pmi && pmi4==pmi ? 4 : rb_step0;
const int re_cnt = NR_NB_SC_PER_RB * rb_step; const int re_cnt = NR_NB_SC_PER_RB * rb_step;
if (pmi == 0) { // unitary Precoding if (pmi == 0) { // unitary Precoding
if (subCarrier + re_cnt <= symbol_sz) { // RB does not cross DC if (subCarrier + re_cnt <= symbol_sz) { // RB does not cross DC
if (ant < rel15->nrOfLayers) if (ant < rel15->nrOfLayers)