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bugfix in dmrs reception for pusch

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This commit is contained in:
Francesco Mani
2020-04-29 14:00:32 +02:00
parent 5cbb380efb
commit 86bc794518
1 changed files with 5 additions and 5 deletions
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openair1/PHY/NR_REFSIG/nr_dmrs_rx.c
+5 -5
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@@ -63,7 +63,7 @@ int nr_pusch_dmrs_rx(PHY_VARS_gNB *gNB,
int8_t w, nb_dmrs;
short *mod_table;
unsigned char idx=0;
int k;
typedef int array_of_w[2];
array_of_w *wf;
array_of_w *wt;
@@ -77,18 +77,18 @@ int nr_pusch_dmrs_rx(PHY_VARS_gNB *gNB,
if (gNB->frame_parms.Ncp == NORMAL) {
nb_dmrs = ((dmrs_type==pusch_dmrs_type1) ? 6:4);
for (int i=re_offset; i<re_offset+(nb_pusch_rb*nb_dmrs); i++) {
k = i-re_offset;
w = (wf[p-1000][i&1])*(wt[p-1000][lp]);
mod_table = (w==1) ? nr_rx_mod_table : nr_rx_nmod_table;
idx = ((((nr_gold_pusch[(i<<1)>>5])>>((i<<1)&0x1f))&1)<<1) ^ (((nr_gold_pusch[((i<<1)+1)>>5])>>(((i<<1)+1)&0x1f))&1);
((int16_t*)output)[i<<1] = mod_table[(NR_MOD_TABLE_QPSK_OFFSET + idx)<<1];
((int16_t*)output)[(i<<1)+1] = mod_table[((NR_MOD_TABLE_QPSK_OFFSET + idx)<<1) + 1];
((int16_t*)output)[k<<1] = mod_table[(NR_MOD_TABLE_QPSK_OFFSET + idx)<<1];
((int16_t*)output)[(k<<1)+1] = mod_table[((NR_MOD_TABLE_QPSK_OFFSET + idx)<<1) + 1];
#ifdef DEBUG_PUSCH
printf("nr_pusch_dmrs_rx dmrs config type %d port %d nb_pusch_rb %d\n", dmrs_type, p, nb_pusch_rb);
printf("wf[%d] = %d wt[%d]= %d\n", i&1, wf[p-1000][i&1], lp, wt[p-1000][lp]);
printf("i %d idx %d pusch gold %u b0-b1 %d-%d mod_dmrs %d %d\n", i, idx, nr_gold_pusch[(i<<1)>>5], (((nr_gold_pusch[(i<<1)>>5])>>((i<<1)&0x1f))&1),
(((nr_gold_pusch[((i<<1)+1)>>5])>>(((i<<1)+1)&0x1f))&1), ((int16_t*)output)[i<<1], ((int16_t*)output)[(i<<1)+1]);
(((nr_gold_pusch[((i<<1)+1)>>5])>>(((i<<1)+1)&0x1f))&1), ((int16_t*)output)[k<<1], ((int16_t*)output)[(k<<1)+1]);
#endif
}