Skip to content

O
OpenXG-RAN
Commit a35035f9 authored by Roberto Louro Magueta's avatar Roberto Louro Magueta
Browse files
Options

Remove replicated code in nr_pdsch_channel_estimation()

parent 9162b115
Hide whitespace changes
Inline Side-by-side
Showing with 81 additions and 261 deletions
openair1/PHY/NR_UE_ESTIMATION/nr_dl_channel_estimation.c
View file @ a35035f9
...@@ -1378,145 +1378,51 @@ int nr_pdsch_channel_estimation(PHY_VARS_NR_UE *ue, ...@@ -1378,145 +1378,51 @@ int nr_pdsch_channel_estimation(PHY_VARS_NR_UE *ue,
} }
} }
for (aarx=0; aarx<ue->frame_parms.nb_antennas_rx; aarx++) { for (aarx = 0; aarx < ue->frame_parms.nb_antennas_rx; aarx++) {
pil = (int16_t *)&pilot[rb_offset*((config_type == NFAPI_NR_DMRS_TYPE1) ? 6:4)];
k = k % ue->frame_parms.ofdm_symbol_size;
re_offset = k;
rxF = (int16_t *)&rxdataF[aarx][(symbol_offset+re_offset+nushift)];
dl_ch = (int16_t *)&dl_ch_estimates[p*ue->frame_parms.nb_antennas_rx+aarx][ch_offset];
memset(dl_ch,0,4*(ue->frame_parms.ofdm_symbol_size));
#ifdef DEBUG_PDSCH #ifdef DEBUG_PDSCH
printf("ch est pilot addr %p RB_DL %d\n",&pilot[0], ue->frame_parms.N_RB_DL); printf("\n============================================\n");
printf("k %d, first_carrier %d\n",k,ue->frame_parms.first_carrier_offset); printf("==== Tx port %i, Rx antenna %i, Symbol %i ====\n", p, aarx, symbol);
printf("rxF addr %p p %d\n", rxF,p); printf("============================================\n");
printf("dl_ch addr %p nushift %d\n",dl_ch,nushift);
#endif #endif
if (config_type == NFAPI_NR_DMRS_TYPE1 && ue->chest_freq == 0) {
// Treat first 2 pilots specially (left edge) pil = (int16_t *)&pilot[rb_offset * ((config_type == NFAPI_NR_DMRS_TYPE1) ? 6 : 4)];
ch[0] = (int16_t)(((int32_t)pil[0]*rxF[0] - (int32_t)pil[1]*rxF[1])>>15); k = k % ue->frame_parms.ofdm_symbol_size;
ch[1] = (int16_t)(((int32_t)pil[0]*rxF[1] + (int32_t)pil[1]*rxF[0])>>15); re_offset = k;
#ifdef DEBUG_PDSCH rxF = (int16_t *)&rxdataF[aarx][(symbol_offset + re_offset + nushift)];
printf("ch 0 %d\n",((int32_t)pil[0]*rxF[0] - (int32_t)pil[1]*rxF[1])); dl_ch = (int16_t *)&dl_ch_estimates[p * ue->frame_parms.nb_antennas_rx + aarx][ch_offset];
printf("pilot 0 : rxF - > (%d,%d) addr %p ch -> (%d,%d), pil -> (%d,%d) \n",rxF[0],rxF[1],&rxF[0],ch[0],ch[1],pil[0],pil[1]); memset(dl_ch, 0, 4 * (ue->frame_parms.ofdm_symbol_size));
printf("data 0 : rxF - > (%d,%d) addr %p ch -> (%d,%d), pil -> (%d,%d) \n",rxF[2],rxF[3],&rxF[2],ch[0],ch[1],pil[0],pil[1]);
#endif
multadd_real_vector_complex_scalar(fl,
ch,
dl_ch,
8);
pil += 2;
re_offset = (re_offset+2) % ue->frame_parms.ofdm_symbol_size;
rxF = (int16_t *)&rxdataF[aarx][(symbol_offset+nushift+re_offset)];
//for (int i= 0; i<8; i++)
//printf("dl_ch addr %p %d\n", dl_ch+i, *(dl_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_PDSCH
printf("pilot 1 : rxF - > (%d,%d) ch -> (%d,%d), pil -> (%d,%d) \n",rxF[0],rxF[1],ch[0],ch[1],pil[0],pil[1]);
#endif
multadd_real_vector_complex_scalar(fml,
ch,
dl_ch,
8);
pil += 2;
re_offset = (re_offset+2) % ue->frame_parms.ofdm_symbol_size;
rxF = (int16_t *)&rxdataF[aarx][(symbol_offset+nushift+re_offset)];
//printf("dl_ch addr %p\n",dl_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_PDSCH
printf("pilot 2 : rxF - > (%d,%d) ch -> (%d,%d), pil -> (%d,%d) \n",rxF[0],rxF[1],ch[0],ch[1],pil[0],pil[1]);
#endif
multadd_real_vector_complex_scalar(fmm,
ch,
dl_ch,
8);
pil += 2;
re_offset = (re_offset+2) % ue->frame_parms.ofdm_symbol_size;
rxF = (int16_t *)&rxdataF[aarx][(symbol_offset+nushift+re_offset)];
dl_ch += 8;
for (pilot_cnt=3; pilot_cnt<(6*nb_rb_pdsch-3); pilot_cnt += 2) { if (config_type == NFAPI_NR_DMRS_TYPE1 && ue->chest_freq == 0) {
ch[0] = (int16_t)(((int32_t)pil[0]*rxF[0] - (int32_t)pil[1]*rxF[1])>>15); for (pilot_cnt = 0; pilot_cnt < (6 * nb_rb_pdsch); pilot_cnt++) {
ch[1] = (int16_t)(((int32_t)pil[0]*rxF[1] + (int32_t)pil[1]*rxF[0])>>15); ch[0] = (int16_t)(((int32_t)pil[0] * rxF[0] - (int32_t)pil[1] * rxF[1]) >> 15);
#ifdef DEBUG_PDSCH ch[1] = (int16_t)(((int32_t)pil[0] * rxF[1] + (int32_t)pil[1] * rxF[0]) >> 15);
printf("pilot %u : rxF - > (%d,%d) ch -> (%d,%d), pil -> (%d,%d) \n",pilot_cnt,rxF[0],rxF[1],ch[0],ch[1],pil[0],pil[1]);
#endif
multadd_real_vector_complex_scalar(fm,
ch,
dl_ch,
8);
pil += 2;
re_offset = (re_offset+2) % ue->frame_parms.ofdm_symbol_size;
rxF = (int16_t *)&rxdataF[aarx][(symbol_offset+nushift+re_offset)];
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_PDSCH #ifdef DEBUG_PDSCH
printf("pilot %u : rxF - > (%d,%d) ch -> (%d,%d), pil -> (%d,%d) \n",pilot_cnt+1,rxF[0],rxF[1],ch[0],ch[1],pil[0],pil[1]); printf("pilot %3u: pil -> (%6d,%6d), rxF -> (%4d,%4d), ch -> (%4d,%4d) \n", pilot_cnt, pil[0], pil[1], rxF[0], rxF[1], ch[0], ch[1]);
#endif #endif
multadd_real_vector_complex_scalar(fmm,
ch, if (pilot_cnt == 0) {
dl_ch, multadd_real_vector_complex_scalar(fl, ch, dl_ch, 8);
8); } else if (pilot_cnt == 1) {
multadd_real_vector_complex_scalar(fml, ch, dl_ch, 8);
} else if (pilot_cnt == 6 * nb_rb_pdsch - 2) {
multadd_real_vector_complex_scalar(fmr, ch, dl_ch, 8);
dl_ch += 8;
} else if (pilot_cnt == 6 * nb_rb_pdsch - 1) {
multadd_real_vector_complex_scalar(fr, ch, dl_ch, 8);
} else if (pilot_cnt % 2 == 0) {
multadd_real_vector_complex_scalar(fmm, ch, dl_ch, 8);
dl_ch += 8;
} else {
multadd_real_vector_complex_scalar(fm, ch, dl_ch, 8);
}
pil += 2; pil += 2;
re_offset = (re_offset+2) % ue->frame_parms.ofdm_symbol_size; re_offset = (re_offset + 2) % ue->frame_parms.ofdm_symbol_size;
rxF = (int16_t *)&rxdataF[aarx][(symbol_offset+nushift+re_offset)]; rxF = (int16_t *)&rxdataF[aarx][(symbol_offset + nushift + re_offset)];
dl_ch += 8;
} }
// Treat first 2 pilots specially (right 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_PDSCH
printf("pilot %u : rxF - > (%d,%d) ch -> (%d,%d), pil -> (%d,%d) \n",pilot_cnt,rxF[0],rxF[1],ch[0],ch[1],pil[0],pil[1]);
#endif
multadd_real_vector_complex_scalar(fm,
ch,
dl_ch,
8);
//for (int i= 0; i<8; i++)
//printf("dl_ch addr %p %d\n", dl_ch+i, *(dl_ch+i));
pil += 2;
re_offset = (re_offset+2) % ue->frame_parms.ofdm_symbol_size;
rxF = (int16_t *)&rxdataF[aarx][(symbol_offset+nushift+re_offset)];
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_PDSCH
printf("ch 0 %d\n",((int32_t)pil[0]*rxF[0] - (int32_t)pil[1]*rxF[1]));
printf("pilot %u: rxF - > (%d,%d) addr %p ch -> (%d,%d), pil -> (%d,%d) \n",pilot_cnt+1,rxF[0],rxF[1],&rxF[0],ch[0],ch[1],pil[0],pil[1]);
#endif
multadd_real_vector_complex_scalar(fmr,
ch,
dl_ch,
8);
pil += 2;
re_offset = (re_offset+2) % ue->frame_parms.ofdm_symbol_size;
rxF = (int16_t *)&rxdataF[aarx][(symbol_offset+nushift+re_offset)];
dl_ch += 8;
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_PDSCH
printf("pilot %u: rxF - > (%d,%d) ch -> (%d,%d), pil -> (%d,%d) \n",pilot_cnt+2,rxF[0],rxF[1],ch[0],ch[1],pil[0],pil[1]);
#endif
multadd_real_vector_complex_scalar(fr,
ch,
dl_ch,
8);
// check if PRB crosses DC and improve estimates around DC // check if PRB crosses DC and improve estimates around DC
if ((bwp_start_subcarrier < ue->frame_parms.ofdm_symbol_size) && (bwp_start_subcarrier+nb_rb_pdsch*12 >= ue->frame_parms.ofdm_symbol_size)) { if ((bwp_start_subcarrier < ue->frame_parms.ofdm_symbol_size) && (bwp_start_subcarrier+nb_rb_pdsch*12 >= ue->frame_parms.ofdm_symbol_size)) {
dl_ch = (int16_t *)&dl_ch_estimates[aarx][ch_offset]; dl_ch = (int16_t *)&dl_ch_estimates[aarx][ch_offset];
...@@ -1571,150 +1477,64 @@ int nr_pdsch_channel_estimation(PHY_VARS_NR_UE *ue, ...@@ -1571,150 +1477,64 @@ int nr_pdsch_channel_estimation(PHY_VARS_NR_UE *ue,
} }
} else if (config_type == NFAPI_NR_DMRS_TYPE2 && ue->chest_freq == 0){ //pdsch_dmrs_type2 |dmrs_r,dmrs_l,0,0,0,0,dmrs_r,dmrs_l,0,0,0,0| } else if (config_type == NFAPI_NR_DMRS_TYPE2 && ue->chest_freq == 0){ //pdsch_dmrs_type2 |dmrs_r,dmrs_l,0,0,0,0,dmrs_r,dmrs_l,0,0,0,0|
// Treat first 4 pilots specially (left edge) for (pilot_cnt = 0; pilot_cnt < 4 * nb_rb_pdsch; pilot_cnt++) {
ch_l[0] = (int16_t)(((int32_t)pil[0]*rxF[0] - (int32_t)pil[1]*rxF[1])>>15); if (pilot_cnt % 2 == 0) {
ch_l[1] = (int16_t)(((int32_t)pil[0]*rxF[1] + (int32_t)pil[1]*rxF[0])>>15); ch_l[0] = (int16_t)(((int32_t)pil[0] * rxF[0] - (int32_t)pil[1] * rxF[1]) >> 15);
ch_l[1] = (int16_t)(((int32_t)pil[0] * rxF[1] + (int32_t)pil[1] * rxF[0]) >> 15);
#ifdef DEBUG_PDSCH #ifdef DEBUG_PDSCH
printf("ch 0 %d\n",((int32_t)pil[0]*rxF[0] - (int32_t)pil[1]*rxF[1])); printf("pilot %3u: pil -> (%6d,%6d), rxF -> (%4d,%4d), ch -> (%4d,%4d) \n", pilot_cnt, pil[0], pil[1], rxF[0], rxF[1], ch_l[0], ch_l[1]);
printf("pilot 0 : rxF - > (%d,%d) addr %p ch -> (%d,%d), pil -> (%d,%d) \n",rxF[0],rxF[1],&rxF[0],ch_l[0],ch_l[1],pil[0],pil[1]);
#endif #endif
pil += 2; } else {
re_offset = (re_offset+1) % ue->frame_parms.ofdm_symbol_size; ch_r[0] = (int16_t)(((int32_t)pil[0] * rxF[0] - (int32_t)pil[1] * rxF[1]) >> 15);
rxF = (int16_t *)&rxdataF[aarx][(symbol_offset+nushift+re_offset)]; ch_r[1] = (int16_t)(((int32_t)pil[0] * rxF[1] + (int32_t)pil[1] * rxF[0]) >> 15);
ch_r[0] = (int16_t)(((int32_t)pil[0]*rxF[0] - (int32_t)pil[1]*rxF[1])>>15);
ch_r[1] = (int16_t)(((int32_t)pil[0]*rxF[1] + (int32_t)pil[1]*rxF[0])>>15);
ch[0] = (ch_l[0]+ch_r[0])>>1;
ch[1] = (ch_l[1]+ch_r[1])>>1;
dl_ch[(0+2*nushift)] = ch[0];
dl_ch[(1+2*nushift)] = ch[1];
dl_ch[2+2*nushift] = ch[0];
dl_ch[3+2*nushift] = ch[1];
multadd_real_vector_complex_scalar(fl,
ch,
dl_ch,
8);
pil += 2;
re_offset = (re_offset+5) % ue->frame_parms.ofdm_symbol_size;
rxF = (int16_t *)&rxdataF[aarx][(symbol_offset+nushift+re_offset)];
ch_l[0] = (int16_t)(((int32_t)pil[0]*rxF[0] - (int32_t)pil[1]*rxF[1])>>15);
ch_l[1] = (int16_t)(((int32_t)pil[0]*rxF[1] + (int32_t)pil[1]*rxF[0])>>15);
pil += 2;
re_offset = (re_offset+1) % ue->frame_parms.ofdm_symbol_size;
rxF = (int16_t *)&rxdataF[aarx][(symbol_offset+nushift+re_offset)];
ch_r[0] = (int16_t)(((int32_t)pil[0]*rxF[0] - (int32_t)pil[1]*rxF[1])>>15);
ch_r[1] = (int16_t)(((int32_t)pil[0]*rxF[1] + (int32_t)pil[1]*rxF[0])>>15);
ch[0] = (ch_l[0]+ch_r[0])>>1;
ch[1] = (ch_l[1]+ch_r[1])>>1;
multadd_real_vector_complex_scalar(fr,
ch,
dl_ch,
8);
dl_ch += 12;
dl_ch[0+2*nushift] = ch[0];
dl_ch[1+2*nushift] = ch[1];
dl_ch[2+2*nushift] = ch[0];
dl_ch[3+2*nushift] = ch[1];
dl_ch += 4;
for (pilot_cnt=4; pilot_cnt<4*nb_rb_pdsch; pilot_cnt += 4) {
multadd_real_vector_complex_scalar(fml,
ch,
dl_ch,
8);
pil += 2;
re_offset = (re_offset+5) % ue->frame_parms.ofdm_symbol_size;
rxF = (int16_t *)&rxdataF[aarx][(symbol_offset+nushift+re_offset)];
ch_l[0] = (int16_t)(((int32_t)pil[0]*rxF[0] - (int32_t)pil[1]*rxF[1])>>15);
ch_l[1] = (int16_t)(((int32_t)pil[0]*rxF[1] + (int32_t)pil[1]*rxF[0])>>15);
#ifdef DEBUG_PDSCH
printf("pilot %u : rxF - > (%d,%d) ch -> (%d,%d), pil -> (%d,%d) \n",pilot_cnt,rxF[0],rxF[1],ch_l[0],ch_l[1],pil[0],pil[1]);
#endif
pil += 2;
re_offset = (re_offset+1) % ue->frame_parms.ofdm_symbol_size;
rxF = (int16_t *)&rxdataF[aarx][(symbol_offset+nushift+re_offset)];
ch_r[0] = (int16_t)(((int32_t)pil[0]*rxF[0] - (int32_t)pil[1]*rxF[1])>>15);
ch_r[1] = (int16_t)(((int32_t)pil[0]*rxF[1] + (int32_t)pil[1]*rxF[0])>>15);
ch[0] = (ch_l[0]+ch_r[0])>>1;
ch[1] = (ch_l[1]+ch_r[1])>>1;
#ifdef DEBUG_PDSCH #ifdef DEBUG_PDSCH
printf("pilot %u : rxF - > (%d,%d) ch -> (%d,%d), pil -> (%d,%d) \n",pilot_cnt+1,rxF[0],rxF[1],ch_r[0],ch_r[1],pil[0],pil[1]); printf("pilot %3u: pil -> (%6d,%6d), rxF -> (%4d,%4d), ch -> (%4d,%4d) \n", pilot_cnt, pil[0], pil[1], rxF[0], rxF[1], ch_r[0], ch_r[1]);
#endif #endif
ch[0] = (ch_l[0] + ch_r[0]) >> 1;
multadd_real_vector_complex_scalar(fmr, ch[1] = (ch_l[1] + ch_r[1]) >> 1;
ch,
dl_ch, if (pilot_cnt == 3) {
8); multadd_real_vector_complex_scalar(fr, ch, dl_ch, 8);
dl_ch += 12;
dl_ch += 8; } else if (pilot_cnt % 4 == 1) {
dl_ch[0+2*nushift] = ch[0]; multadd_real_vector_complex_scalar(fmr, ch, dl_ch, 8);
dl_ch[1+2*nushift] = ch[1]; dl_ch += 8;
dl_ch[2+2*nushift] = ch[0]; } else if (pilot_cnt > 3) {
dl_ch[3+2*nushift] = ch[1]; multadd_real_vector_complex_scalar(fmm, ch, dl_ch, 8);
dl_ch += 12;
multadd_real_vector_complex_scalar(fm, }
ch,
dl_ch,
8);
pil += 2; dl_ch[0 + (nushift << 1)] = ch[0];
re_offset = (re_offset+5) % ue->frame_parms.ofdm_symbol_size; dl_ch[1 + (nushift << 1)] = ch[1];
rxF = (int16_t *)&rxdataF[aarx][(symbol_offset+nushift+re_offset)]; dl_ch[2 + (nushift << 1)] = ch[0];
ch_l[0] = (int16_t)(((int32_t)pil[0]*rxF[0] - (int32_t)pil[1]*rxF[1])>>15); dl_ch[3 + (nushift << 1)] = ch[1];
ch_l[1] = (int16_t)(((int32_t)pil[0]*rxF[1] + (int32_t)pil[1]*rxF[0])>>15);
if (pilot_cnt == 1) {
multadd_real_vector_complex_scalar(fl, ch, dl_ch, 8);
} else if (pilot_cnt % 4 == 1) {
multadd_real_vector_complex_scalar(fm, ch, dl_ch, 8);
} else if (pilot_cnt == (4 * nb_rb_pdsch - 1)) {
dl_ch += 4;
// Treat last 2 pilots specially (right edge)
multadd_real_vector_complex_scalar(frl, dl_ch - 2 + (nushift << 1), dl_ch, 8);
multadd_real_vector_complex_scalar(frr, dl_ch - 14 + (nushift << 1), dl_ch, 8);
} else {
dl_ch += 4;
multadd_real_vector_complex_scalar(fml, ch, dl_ch, 8);
}
}
pil += 2; pil += 2;
re_offset = (re_offset+1) % ue->frame_parms.ofdm_symbol_size; int re_offset_add = pilot_cnt % 2 == 0 ? 1 : 5;
rxF = (int16_t *)&rxdataF[aarx][(symbol_offset+nushift+re_offset)]; re_offset = (re_offset + re_offset_add) % ue->frame_parms.ofdm_symbol_size;
ch_r[0] = (int16_t)(((int32_t)pil[0]*rxF[0] - (int32_t)pil[1]*rxF[1])>>15); rxF = (int16_t *)&rxdataF[aarx][(symbol_offset + nushift + re_offset)];
ch_r[1] = (int16_t)(((int32_t)pil[0]*rxF[1] + (int32_t)pil[1]*rxF[0])>>15);
#ifdef DEBUG_PDSCH
printf("pilot %u : rxF - > (%d,%d) ch -> (%d,%d), pil -> (%d,%d) \n",pilot_cnt+1,rxF[0],rxF[1],ch_r[0],ch_r[1],pil[0],pil[1]);
#endif
ch[0] = (ch_l[0]+ch_r[0])>>1;
ch[1] = (ch_l[1]+ch_r[1])>>1;
multadd_real_vector_complex_scalar(fmm,
ch,
dl_ch,
8);
dl_ch += 12;
dl_ch[0+2*nushift] = ch[0];
dl_ch[1+2*nushift] = ch[1];
dl_ch[2+2*nushift] = ch[0];
dl_ch[3+2*nushift] = ch[1];
dl_ch += 4;
} }
// Treat last 2 pilots specially (right edge)
// dl_ch-2+nushift<<1
multadd_real_vector_complex_scalar(frl,
dl_ch-2+2*nushift,
dl_ch,
8);
multadd_real_vector_complex_scalar(frr,
dl_ch-14+2*nushift,/*14*/
dl_ch,
8);
// check if PRB crosses DC and improve estimates around DC // check if PRB crosses DC and improve estimates around DC
if ((bwp_start_subcarrier < ue->frame_parms.ofdm_symbol_size) && (bwp_start_subcarrier+nb_rb_pdsch*12 >= ue->frame_parms.ofdm_symbol_size) && (p<2)) { if ((bwp_start_subcarrier < ue->frame_parms.ofdm_symbol_size) && (bwp_start_subcarrier+nb_rb_pdsch*12 >= ue->frame_parms.ofdm_symbol_size) && (p<2)) {
......
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment