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OpenXG UE
Commit 512b4482 authored by Elena Lukashova's avatar Elena Lukashova
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Extending dlsch_channel_level to a larger number of 

receive and transmit antennas.
parent ba07e48f
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Showing with 33 additions and 34 deletions
openair1/PHY/LTE_UE_TRANSPORT/dlsch_demodulation.c
View file @ 512b4482
...@@ -3631,7 +3631,6 @@ void dlsch_scale_channel(int **dl_ch_estimates_ext, ...@@ -3631,7 +3631,6 @@ void dlsch_scale_channel(int **dl_ch_estimates_ext,
#endif #endif
} }
//compute average channel_level on each (TX,RX) antenna pair //compute average channel_level on each (TX,RX) antenna pair
void dlsch_channel_level(int **dl_ch_estimates_ext, void dlsch_channel_level(int **dl_ch_estimates_ext,
LTE_DL_FRAME_PARMS *frame_parms, LTE_DL_FRAME_PARMS *frame_parms,
...@@ -3641,6 +3640,7 @@ void dlsch_channel_level(int **dl_ch_estimates_ext, ...@@ -3641,6 +3640,7 @@ void dlsch_channel_level(int **dl_ch_estimates_ext,
{ {
#if defined(__x86_64__)||defined(__i386__) #if defined(__x86_64__)||defined(__i386__)
//printf("symbol = %d\n", symbol);
short rb; short rb;
unsigned char aatx,aarx,nre=12,symbol_mod; unsigned char aatx,aarx,nre=12,symbol_mod;
...@@ -3658,21 +3658,23 @@ void dlsch_channel_level(int **dl_ch_estimates_ext, ...@@ -3658,21 +3658,23 @@ void dlsch_channel_level(int **dl_ch_estimates_ext,
//nb_rb*nre = y * 2^x //nb_rb*nre = y * 2^x
int16_t x = factor2(nb_rb*nre); int16_t x = factor2(nb_rb*nre);
int16_t y = (nb_rb*nre)>>x; int16_t y = (nb_rb*nre)>>x;
//printf("nb_rb*nre = %d = %d * 2^(%d)\n",nb_rb*nre,y,x);
for (aatx=0; aatx<frame_parms->nb_antenna_ports_eNB; aatx++) for (aatx=0; aatx<frame_parms->nb_antenna_ports_eNB; aatx++)
for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) { for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
//clear average level //clear average level
//printf("aatx = %d, aarx = %d, aatx*frame_parms->nb_antennas_rx + aarx] = %d \n", aatx, aarx, aatx*frame_parms->nb_antennas_rx + aarx);
avg128D = _mm_setzero_si128(); avg128D = _mm_setzero_si128();
// 5 is always a symbol with no pilots for both normal and extended prefix // 5 is always a symbol with no pilots for both normal and extended prefix
dl_ch128=(__m128i *)&dl_ch_estimates_ext[(aatx<<1)+aarx][symbol*frame_parms->N_RB_DL*12];
dl_ch128=(__m128i *)&dl_ch_estimates_ext[aatx*frame_parms->nb_antennas_rx + aarx][symbol*frame_parms->N_RB_DL*12];
for (rb=0;rb<nb_rb;rb++) { for (rb=0;rb<nb_rb;rb++) {
// printf("rb %d : ",rb);
// print_shorts("ch",&dl_ch128[0]); //printf("rb %d : ",rb);
avg128D = _mm_add_epi32(avg128D,_mm_srai_epi16(_mm_madd_epi16(dl_ch128[0],dl_ch128[0]),x)); avg128D = _mm_add_epi32(avg128D,_mm_srai_epi16(_mm_madd_epi16(dl_ch128[0],dl_ch128[0]),x));
avg128D = _mm_add_epi32(avg128D,_mm_srai_epi16(_mm_madd_epi16(dl_ch128[1],dl_ch128[1]),x)); avg128D = _mm_add_epi32(avg128D,_mm_srai_epi16(_mm_madd_epi16(dl_ch128[1],dl_ch128[1]),x));
//avg128D = _mm_add_epi32(avg128D,_mm_madd_epi16(dl_ch128[0],_mm_srai_epi16(_mm_mulhi_epi16(dl_ch128[0], coeff128),15))); //avg128D = _mm_add_epi32(avg128D,_mm_madd_epi16(dl_ch128[0],_mm_srai_epi16(_mm_mulhi_epi16(dl_ch128[0], coeff128),15)));
//avg128D = _mm_add_epi32(avg128D,_mm_madd_epi16(dl_ch128[1],_mm_srai_epi16(_mm_mulhi_epi16(dl_ch128[1], coeff128),15))); //avg128D = _mm_add_epi32(avg128D,_mm_madd_epi16(dl_ch128[1],_mm_srai_epi16(_mm_mulhi_epi16(dl_ch128[1], coeff128),15)));
...@@ -3681,25 +3683,24 @@ void dlsch_channel_level(int **dl_ch_estimates_ext, ...@@ -3681,25 +3683,24 @@ void dlsch_channel_level(int **dl_ch_estimates_ext,
dl_ch128+=2; dl_ch128+=2;
} }
else { else {
avg128D = _mm_add_epi32(avg128D,_mm_srai_epi16(_mm_madd_epi16(dl_ch128[2],dl_ch128[2]),x)); avg128D = _mm_add_epi32(avg128D,_mm_srai_epi16(_mm_madd_epi16(dl_ch128[2],dl_ch128[2]),x));
//avg128D = _mm_add_epi32(avg128D,_mm_madd_epi16(dl_ch128[2],_mm_srai_epi16(_mm_mulhi_epi16(dl_ch128[2], coeff128),15))); //avg128D = _mm_add_epi32(avg128D,_mm_madd_epi16(dl_ch128[2],_mm_srai_epi16(_mm_mulhi_epi16(dl_ch128[2], coeff128),15)));
dl_ch128+=3; dl_ch128+=3;
} }
/*
if (rb==0) { /*if(rb==0){
print_shorts("dl_ch128",&dl_ch128[0]); print_shorts("dl_ch128",&dl_ch128[0]);
print_shorts("dl_ch128",&dl_ch128[1]); print_shorts("dl_ch128",&dl_ch128[1]);
print_shorts("dl_ch128",&dl_ch128[2]); print_shorts("dl_ch128",&dl_ch128[2]);
} }*/
*/
} }
avg[(aatx<<1)+aarx] =(((int32_t*)&avg128D)[0] + avg[aatx*frame_parms->nb_antennas_rx + aarx] =(((int32_t*)&avg128D)[0] +
((int32_t*)&avg128D)[1] + ((int32_t*)&avg128D)[1] +
((int32_t*)&avg128D)[2] + ((int32_t*)&avg128D)[2] +
((int32_t*)&avg128D)[3])/y; ((int32_t*)&avg128D)[3])/y;
// printf("Channel level : %d\n",avg[(aatx<<1)+aarx]); }
}
_mm_empty(); _mm_empty();
_m_empty(); _m_empty();
...@@ -3719,7 +3720,7 @@ void dlsch_channel_level(int **dl_ch_estimates_ext, ...@@ -3719,7 +3720,7 @@ void dlsch_channel_level(int **dl_ch_estimates_ext,
avg128D = vdupq_n_s32(0); avg128D = vdupq_n_s32(0);
// 5 is always a symbol with no pilots for both normal and extended prefix // 5 is always a symbol with no pilots for both normal and extended prefix
dl_ch128=(int16x4_t *)&dl_ch_estimates_ext[(aatx<<1)+aarx][symbol*frame_parms->N_RB_DL*12]; dl_ch128=(int16x4_t *)&dl_ch_estimates_ext[aatx*frame_parms->nb_antennas_rx + aarx][symbol*frame_parms->N_RB_DL*12];
for (rb=0; rb<nb_rb; rb++) { for (rb=0; rb<nb_rb; rb++) {
// printf("rb %d : ",rb); // printf("rb %d : ",rb);
...@@ -3729,7 +3730,7 @@ void dlsch_channel_level(int **dl_ch_estimates_ext, ...@@ -3729,7 +3730,7 @@ void dlsch_channel_level(int **dl_ch_estimates_ext,
avg128D = vqaddq_s32(avg128D,vmull_s16(dl_ch128[2],dl_ch128[2])); avg128D = vqaddq_s32(avg128D,vmull_s16(dl_ch128[2],dl_ch128[2]));
avg128D = vqaddq_s32(avg128D,vmull_s16(dl_ch128[3],dl_ch128[3])); avg128D = vqaddq_s32(avg128D,vmull_s16(dl_ch128[3],dl_ch128[3]));
if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->nb_antenna_ports_eNB!=1)) { if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->mode1_flag==0)) {
dl_ch128+=4; dl_ch128+=4;
} else { } else {
avg128D = vqaddq_s32(avg128D,vmull_s16(dl_ch128[4],dl_ch128[4])); avg128D = vqaddq_s32(avg128D,vmull_s16(dl_ch128[4],dl_ch128[4]));
...@@ -3746,24 +3747,22 @@ void dlsch_channel_level(int **dl_ch_estimates_ext, ...@@ -3746,24 +3747,22 @@ void dlsch_channel_level(int **dl_ch_estimates_ext,
*/ */
} }
if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->mode1_flag==0))
if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->nb_antenna_ports_eNB!=1))
nre=8; nre=8;
else if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->nb_antenna_ports_eNB==1)) else if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->mode1_flag==1))
nre=10; nre=10;
else else
nre=12; nre=12;
avg[(aatx<<1)+aarx] = (((int32_t*)&avg128D)[0] + avg[aatx*frame_parms->nb_antennas_rx + aarx] = (((int32_t*)&avg128D)[0] +
((int32_t*)&avg128D)[1] + ((int32_t*)&avg128D)[1] +
((int32_t*)&avg128D)[2] + ((int32_t*)&avg128D)[2] +
((int32_t*)&avg128D)[3])/(nb_rb*nre); ((int32_t*)&avg128D)[3])/(nb_rb*nre);
// printf("Channel level : %d\n",avg[(aatx<<1)+aarx]); //printf("Channel level : %d\n",avg[aatx*(frame_parms->nb_antennas_rx-1) + aarx]);
} }
#endif #endif
} }
void dlsch_channel_level_core(int **dl_ch_estimates_ext, void dlsch_channel_level_core(int **dl_ch_estimates_ext,
......
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