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Commit 4ecb0401 authored by Roberto Louro Magueta's avatar Roberto Louro Magueta
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Second code simplification in UL channel estimation

parent 65f09fec
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Showing with 7 additions and 94 deletions
openair1/PHY/NR_ESTIMATION/nr_ul_channel_estimation.c
View file @ 4ecb0401
......@@ -227,101 +227,10 @@ int nr_pusch_channel_estimation(PHY_VARS_gNB *gNB,
//if ((gNB->frame_parms.N_RB_UL&1)==0) {
if (pusch_pdu->dmrs_config_type == pusch_dmrs_type1 && gNB->prb_interpolation == 0){
LOG_D(PHY,"PUSCH estimation DMRS type 1, Freq-domain interpolation");
// Treat first 2 pilots specially (left edge)
ch[0] = (int16_t)(((int32_t)pil[0]*rxF[0] - (int32_t)pil[1]*rxF[1])>>15);
ch[1] = (int16_t)(((int32_t)pil[0]*rxF[1] + (int32_t)pil[1]*rxF[0])>>15);
#ifdef DEBUG_PUSCH
LOG_I(PHY, "In %s ch 0 %d\n", __FUNCTION__, ((int32_t)pil[0]*rxF[0] - (int32_t)pil[1]*rxF[1]));
LOG_I(PHY, "In %s pilot 0 : rxF - > (%d,%d) (%d) ch -> (%d,%d) (%d), pil -> (%d,%d) \n",
__FUNCTION__,
rxF[0],
rxF[1],
dBc(rxF[0],rxF[1]),
ch[0],
ch[1],
dBc(ch[0],ch[1]),
pil[0],
pil[1]);
LOG_I(PHY, "In %s data 0 : rxF - > (%d,%d) (%d)\n", __FUNCTION__, rxF[2], rxF[3], dBc(rxF[2],rxF[3]));
#endif
multadd_real_vector_complex_scalar(fl,
ch,
ul_ch,
8);
pil += 2;
re_offset = (re_offset+2) % gNB->frame_parms.ofdm_symbol_size;
rxF = (int16_t *)&rxdataF[aarx][(soffset+symbol_offset+nushift+re_offset)];
//for (int i= 0; i<8; i++)
//printf("ul_ch addr %p %d\n", ul_ch+i, *(ul_ch+i));
ch[0] = (int16_t)(((int32_t)pil[0]*rxF[0] - (int32_t)pil[1]*rxF[1])>>15);
ch[1] = (int16_t)(((int32_t)pil[0]*rxF[1] + (int32_t)pil[1]*rxF[0])>>15);
#ifdef DEBUG_PUSCH
LOG_I(PHY, "In %s pilot 1 : rxF - > (%d,%d) (%d) ch -> (%d,%d) (%d), pil -> (%d,%d) \n",
__FUNCTION__,
rxF[0],
rxF[1],
dBc(rxF[0],rxF[1]),
ch[0],
ch[1],
dBc(ch[0],ch[1]),
pil[0],
pil[1]);
LOG_I(PHY, "In %s data 1 : rxF - > (%d,%d) (%d)\n",
__FUNCTION__,
rxF[2],
rxF[3],
dBc(rxF[2],rxF[3]));
#endif
multadd_real_vector_complex_scalar(fml,
ch,
ul_ch,
8);
pil += 2;
re_offset = (re_offset+2) % gNB->frame_parms.ofdm_symbol_size;
rxF = (int16_t *)&rxdataF[aarx][(soffset+symbol_offset+nushift+re_offset)];
//printf("ul_ch addr %p\n",ul_ch);
ch[0] = (int16_t)(((int32_t)pil[0]*rxF[0] - (int32_t)pil[1]*rxF[1])>>15);
ch[1] = (int16_t)(((int32_t)pil[0]*rxF[1] + (int32_t)pil[1]*rxF[0])>>15);
#ifdef DEBUG_PUSCH
LOG_I(PHY, "In %s pilot 2 : rxF - > (%d,%d) (%d) ch -> (%d,%d) (%d), pil -> (%d,%d) \n",
__FUNCTION__,
rxF[0],
rxF[1],
dBc(rxF[0],rxF[1]),
ch[0],
ch[1],
dBc(ch[0],ch[1]),
pil[0],
pil[1]);
LOG_I(PHY, "In %s data 2 : rxF - > (%d,%d) (%d)\n",
__FUNCTION__,
rxF[2],
rxF[3],
dBc(rxF[2],rxF[3]));
#endif
multadd_real_vector_complex_scalar(fmm,
ch,
ul_ch,
8);
//for (int i= 0; i<16; i++)
//printf("ul_ch addr %p %d\n", ul_ch+i, *(ul_ch+i));
pil += 2;
re_offset = (re_offset+2) % gNB->frame_parms.ofdm_symbol_size;
rxF = (int16_t *)&rxdataF[aarx][(soffset+symbol_offset+nushift+re_offset)];
ul_ch+=8;
LOG_D(PHY,"PUSCH estimation DMRS type 1, Freq-domain interpolation");
for (pilot_cnt=3; pilot_cnt<(6*nb_rb_pusch-3); pilot_cnt++) {
for (pilot_cnt = 0; pilot_cnt < (6*nb_rb_pusch-3); pilot_cnt++) {
ch[0] = (int16_t)(((int32_t)pil[0]*rxF[0] - (int32_t)pil[1]*rxF[1])>>15);
ch[1] = (int16_t)(((int32_t)pil[0]*rxF[1] + (int32_t)pil[1]*rxF[0])>>15);
......@@ -332,7 +241,11 @@ int nr_pusch_channel_estimation(PHY_VARS_gNB *gNB,
//printf("data %4u: rxF -> (%4d,%4d) (%2d)\n",pilot_cnt, rxF[2], rxF[3], dBc(rxF[2], rxF[3]));
#endif
if (pilot_cnt%2 == 0) {
if (pilot_cnt == 0) {
multadd_real_vector_complex_scalar(fl, ch, ul_ch, 8);
} else if (pilot_cnt == 1) {
multadd_real_vector_complex_scalar(fml, ch, ul_ch, 8);
} else if (pilot_cnt%2 == 0) {
multadd_real_vector_complex_scalar(fmm, ch, ul_ch, 8);
ul_ch+=8;
} else {
......
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