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OpenXG-RAN
Commit 1638bbba authored by Roberto Louro Magueta's avatar Roberto Louro Magueta
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Add intermediate variable

parent 0cb014f4
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Showing with 6 additions and 5 deletions
openair1/PHY/NR_ESTIMATION/nr_ul_channel_estimation.c
View file @ 1638bbba
...@@ -1017,6 +1017,8 @@ int nr_srs_channel_estimation(const PHY_VARS_gNB *gNB, ...@@ -1017,6 +1017,8 @@ int nr_srs_channel_estimation(const PHY_VARS_gNB *gNB,
ls_estimated[1] = (int16_t)(((int32_t)generated_real*received_imag - (int32_t)generated_imag*received_real)>>nr_srs_info->srs_generated_signal_bits); ls_estimated[1] = (int16_t)(((int32_t)generated_real*received_imag - (int32_t)generated_imag*received_real)>>nr_srs_info->srs_generated_signal_bits);
srs_ls_estimated_channel[ant][nr_srs_info->sc_list[sc_idx]] = ls_estimated[0] + (((int32_t)ls_estimated[1] << 16) & 0xFFFF0000); srs_ls_estimated_channel[ant][nr_srs_info->sc_list[sc_idx]] = ls_estimated[0] + (((int32_t)ls_estimated[1] << 16) & 0xFFFF0000);
const uint16_t sc_idx_offset = nr_srs_info->sc_list[sc_idx] + mem_offset;
// Channel interpolation // Channel interpolation
if(srs_pdu->comb_size == 0) { if(srs_pdu->comb_size == 0) {
if(sc_idx == 0) { // First subcarrier case if(sc_idx == 0) { // First subcarrier case
...@@ -1038,14 +1040,14 @@ int nr_srs_channel_estimation(const PHY_VARS_gNB *gNB, ...@@ -1038,14 +1040,14 @@ int nr_srs_channel_estimation(const PHY_VARS_gNB *gNB,
} else if(sc_idx%2 == 0) { // 2nd middle case } else if(sc_idx%2 == 0) { // 2nd middle case
// filt8_middle4 is {0,0,4096,8192,8192,8192,4096,0} // filt8_middle4 is {0,0,4096,8192,8192,8192,4096,0}
multadd_real_vector_complex_scalar(filt8_middle4, ls_estimated, srs_estimated_channel16, 8); multadd_real_vector_complex_scalar(filt8_middle4, ls_estimated, srs_estimated_channel16, 8);
srs_estimated_channel16 = (int16_t *)&srs_est[nr_srs_info->sc_list[sc_idx] + mem_offset]; srs_estimated_channel16 = (int16_t *)&srs_est[sc_idx_offset];
} }
} else { } else {
if(sc_idx == 0) { // First subcarrier case if(sc_idx == 0) { // First subcarrier case
// filt16_start is {12288,8192,8192,8192,4096,0,0,0,0,0,0,0,0,0,0,0} // filt16_start is {12288,8192,8192,8192,4096,0,0,0,0,0,0,0,0,0,0,0}
multadd_real_vector_complex_scalar(filt16_start, ls_estimated, srs_estimated_channel16, 16); multadd_real_vector_complex_scalar(filt16_start, ls_estimated, srs_estimated_channel16, 16);
} else if(nr_srs_info->sc_list[sc_idx] < nr_srs_info->sc_list[sc_idx - 1]) { // Start of OFDM symbol case } else if(nr_srs_info->sc_list[sc_idx] < nr_srs_info->sc_list[sc_idx - 1]) { // Start of OFDM symbol case
srs_estimated_channel16 = (int16_t *)&srs_est[nr_srs_info->sc_list[sc_idx] + mem_offset]; srs_estimated_channel16 = (int16_t *)&srs_est[sc_idx_offset];
// filt16_start is {12288,8192,8192,8192,4096,0,0,0,0,0,0,0,0,0,0,0} // filt16_start is {12288,8192,8192,8192,4096,0,0,0,0,0,0,0,0,0,0,0}
multadd_real_vector_complex_scalar(filt16_start, ls_estimated, srs_estimated_channel16, 16); multadd_real_vector_complex_scalar(filt16_start, ls_estimated, srs_estimated_channel16, 16);
} else if((sc_idx < (nr_srs_info->sc_list_length - 1) && nr_srs_info->sc_list[sc_idx + 1] < nr_srs_info->sc_list[sc_idx]) } else if((sc_idx < (nr_srs_info->sc_list_length - 1) && nr_srs_info->sc_list[sc_idx + 1] < nr_srs_info->sc_list[sc_idx])
...@@ -1055,7 +1057,7 @@ int nr_srs_channel_estimation(const PHY_VARS_gNB *gNB, ...@@ -1055,7 +1057,7 @@ int nr_srs_channel_estimation(const PHY_VARS_gNB *gNB,
} else { // Middle case } else { // Middle case
// filt16_middle4 is {4096,8192,8192,8192,8192,8192,8192,8192,4096,0,0,0,0,0,0,0} // filt16_middle4 is {4096,8192,8192,8192,8192,8192,8192,8192,4096,0,0,0,0,0,0,0}
multadd_real_vector_complex_scalar(filt16_middle4, ls_estimated, srs_estimated_channel16, 16); multadd_real_vector_complex_scalar(filt16_middle4, ls_estimated, srs_estimated_channel16, 16);
srs_estimated_channel16 = (int16_t *)&srs_est[nr_srs_info->sc_list[sc_idx] + mem_offset]; srs_estimated_channel16 = (int16_t *)&srs_est[sc_idx_offset];
} }
} }
...@@ -1189,9 +1191,8 @@ int nr_srs_channel_estimation(const PHY_VARS_gNB *gNB, ...@@ -1189,9 +1191,8 @@ int nr_srs_channel_estimation(const PHY_VARS_gNB *gNB,
LOG_I(NR_PHY,"\t __lsRe__________lsIm__|____intRe_______intIm__|____noiRe_______noiIm_\n"); LOG_I(NR_PHY,"\t __lsRe__________lsIm__|____intRe_______intIm__|____noiRe_______noiIm_\n");
} }
for(int r = 0; r<R; r++) { for(int r = 0; r<R; r++) {
if (nr_srs_info->sc_list[sc_idx]+r>=frame_parms->ofdm_symbol_size) { if (nr_srs_info->sc_list[sc_idx] + r >= frame_parms->ofdm_symbol_size)
continue; continue;
}
LOG_I(NR_PHY,"(%4i) %6i\t%6i | %6i\t%6i | %6i\t%6i\n", LOG_I(NR_PHY,"(%4i) %6i\t%6i | %6i\t%6i | %6i\t%6i\n",
subcarrier_log+r, subcarrier_log+r,
(int16_t)(srs_ls_estimated_channel[ant][nr_srs_info->sc_list[sc_idx]+r]&0xFFFF), (int16_t)(srs_ls_estimated_channel[ant][nr_srs_info->sc_list[sc_idx]+r]&0xFFFF),
......
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