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OpenXG-RAN
Commit 0a19a8e3 authored by Sakthi's avatar Sakthi
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more improvements

parent 843e9cf0
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Showing with 4 additions and 15 deletions
openair1/PHY/NR_UE_ESTIMATION/nr_dl_channel_estimation.c
View file @ 0a19a8e3
......@@ -743,19 +743,13 @@ int nr_pdsch_channel_estimation(PHY_VARS_NR_UE *ue,
printf("rxF addr %p p %d\n", rxF,p);
printf("dl_ch addr %p nushift %d\n",dl_ch,nushift);
#endif
//if ((ue->frame_parms.N_RB_DL&1)==0) {
for (uint16_t idx8Sym=0; idx8Sym<(nb_rb_pdsch*12)/8; idx8Sym++ ) {
for (uint8_t idxPil=0; idxPil<10; idxPil+=2 ) {
rxF = (int16_t *)&rxdataF[aarx][(symbol_offset+nushift+re_offset)];
ch[idxPil] = (int16_t)(((int32_t)pil[idx8Sym*8+idxPil]*rxF[0] - (int32_t)pil[idx8Sym*8+idxPil+1]*rxF[1])>>15);
ch[idxPil+1] = (int16_t)(((int32_t)pil[idx8Sym*8+idxPil]*rxF[1] + (int32_t)pil[idx8Sym*8+idxPil+1]*rxF[0])>>15);
// Nulling estimates at DC
if (re_offset == 0) {
ch[idxPil] = 0;
ch[idxPil+1] = 0;
}
ch[idxPil] = (re_offset == 0) ? 0 : (int16_t)(((int32_t)pil[idx8Sym*8+idxPil]*rxF[0] - (int32_t)pil[idx8Sym*8+idxPil+1]*rxF[1])>>15);
ch[idxPil+1] = (re_offset == 0) ? 0 : (int16_t)(((int32_t)pil[idx8Sym*8+idxPil]*rxF[1] + (int32_t)pil[idx8Sym*8+idxPil+1]*rxF[0])>>15);
re_offset = (re_offset+2)&(ue->frame_parms.ofdm_symbol_size-1);
}
......@@ -775,13 +769,8 @@ int nr_pdsch_channel_estimation(PHY_VARS_NR_UE *ue,
for (uint8_t idxPil=0; idxPil<8; idxPil+=2 ) {
rxF = (int16_t *)&rxdataF[aarx][(symbol_offset+nushift+re_offset)];
ch[idxPil] = (int16_t)(((int32_t)pil[used_pils+idxPil]*rxF[0] - (int32_t)pil[used_pils*idxPil+1]*rxF[1])>>15);
ch[idxPil+1] = (int16_t)(((int32_t)pil[used_pils+idxPil]*rxF[1] + (int32_t)pil[used_pils*idxPil+1]*rxF[0])>>15);
// Nulling estimates at DC
if (re_offset == 0) {
ch[idxPil] = 0;
ch[idxPil+1] = 0;
}
ch[idxPil] = (re_offset == 0) ? 0 : (int16_t)(((int32_t)pil[used_pils+idxPil]*rxF[0] - (int32_t)pil[used_pils*idxPil+1]*rxF[1])>>15);
ch[idxPil+1] = (re_offset == 0) ? 0 : (int16_t)(((int32_t)pil[used_pils+idxPil]*rxF[1] + (int32_t)pil[used_pils*idxPil+1]*rxF[0])>>15);
re_offset = (re_offset+2)&(ue->frame_parms.ofdm_symbol_size-1);
}
......
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