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[OAI-UE] Mimo LLR computation AVX2 + fix in TM3 deprecoding

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This commit is contained in:
hbilel
2017-03-08 12:16:38 +01:00
parent ff6d41b6e8
commit ba55fcac27
7 changed files with 69 additions and 11 deletions
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openair1/PHY/LTE_TRANSPORT/dlsch_demodulation.c
+14 -9
View File
@@ -42,6 +42,7 @@
#define NOCYGWIN_STATIC
#endif
extern int16_t dlsch_demod_shift;
//#define DEBUG_HARQ
//#undef LOG_D
@@ -402,8 +403,8 @@ int rx_pdsch(PHY_VARS_UE *ue,
LOG_D(PHY,"Channel Level TM34 avg_0 %d, avg_1 %d, rx_type %d, rx_standard %d, interf_unaw_shift %d \n", avg_0[0],
avg_1[0], rx_type, rx_standard, interf_unaw_shift);
if (rx_type>rx_standard) {
avg_0[0] = (log2_approx(avg_0[0])/2) - 5 + 2 ;//+ 2;
avg_1[0] = (log2_approx(avg_1[0])/2) - 5 + 2 ;//+ 2;
avg_0[0] = (log2_approx(avg_0[0])/2) + dlsch_demod_shift;// + 2 ;//+ 4;
avg_1[0] = (log2_approx(avg_1[0])/2) + dlsch_demod_shift;// + 2 ;//+ 4;
pdsch_vars[eNB_id]->log2_maxh0 = cmax(avg_0[0],0);
pdsch_vars[eNB_id]->log2_maxh1 = cmax(avg_1[0],0);
//printf("TM4 I-A log2_maxh0 = %d\n", pdsch_vars[eNB_id]->log2_maxh0);
@@ -1067,9 +1068,9 @@ int rx_pdsch(PHY_VARS_UE *ue,
write_output("dl_ch_estimates_ext10.m", "dl_ch_estimates_ext10", &pdsch_vars[eNB_id]->dl_ch_estimates_ext[2][0],14*frame_parms->N_RB_DL*12,1,1);
write_output("dl_ch_estimates_ext11.m", "dl_ch_estimates_ext11", &pdsch_vars[eNB_id]->dl_ch_estimates_ext[3][0],14*frame_parms->N_RB_DL*12,1,1);
write_output("rxdataF_comp00.m","rxdataF_comp00", &pdsch_vars[eNB_id]->rxdataF_comp0[0][0],14*frame_parms->N_RB_DL*12,1,1);
write_output("rxdataF_comp01.m","rxdataF_comp01", &pdsch_vars[eNB_id]->rxdataF_comp0[0][0],14*frame_parms->N_RB_DL*12,1,1);
write_output("rxdataF_comp10.m","rxdataF_comp10", &pdsch_vars[eNB_id]->rxdataF_comp0[0][0],14*frame_parms->N_RB_DL*12,1,1);
write_output("rxdataF_comp11.m","rxdataF_comp11", &pdsch_vars[eNB_id]->rxdataF_comp0[0][0],14*frame_parms->N_RB_DL*12,1,1);
write_output("rxdataF_comp01.m","rxdataF_comp01", &pdsch_vars[eNB_id]->rxdataF_comp0[1][0],14*frame_parms->N_RB_DL*12,1,1);
write_output("rxdataF_comp10.m","rxdataF_comp10", &pdsch_vars[eNB_id]->rxdataF_comp1[harq_pid][round][0][0],14*frame_parms->N_RB_DL*12,1,1);
write_output("rxdataF_comp11.m","rxdataF_comp11", &pdsch_vars[eNB_id]->rxdataF_comp1[harq_pid][round][1][0],14*frame_parms->N_RB_DL*12,1,1);
#endif
write_output("llr0.m","llr0", &pdsch_vars[eNB_id]->llr[0][0],(14*nb_rb*12*dlsch1_harq->Qm) - 4*(nb_rb*4*dlsch1_harq->Qm),1,0);
write_output("llr1.m","llr1", &pdsch_vars[eNB_id]->llr[1][0],(14*nb_rb*12*dlsch1_harq->Qm) - 4*(nb_rb*4*dlsch1_harq->Qm),1,0);
@@ -1666,9 +1667,8 @@ void prec2A_TM3_128(__m128i *ch0,__m128i *ch1) {
__m128i tmp0,tmp1;
// sqrt(2) is already taken into account in computation sqrt_rho_a, sqrt_rho_b,
//so divide by 2 is replaced by divide by sqrt(2).
//_mm_mulhi_epi16
// print_shorts("prec2A_TM3 ch0 (before):",ch0);
// print_shorts("prec2A_TM3 ch1 (before):",ch1);
@@ -1679,6 +1679,11 @@ void prec2A_TM3_128(__m128i *ch0,__m128i *ch1) {
ch0[0] = _mm_adds_epi16(ch0[0],tmp1);
ch1[0] = _mm_subs_epi16(tmp0,tmp1);
ch0[0] = _mm_mulhi_epi16(ch0[0],amp);
ch0[0] = _mm_slli_epi16(ch0[0],1);
ch1[0] = _mm_mulhi_epi16(ch1[0],amp);
ch1[0] = _mm_slli_epi16(ch1[0],1);
// print_shorts("prec2A_TM3 ch0 (mid):",&tmp0);
// print_shorts("prec2A_TM3 ch1 (mid):",ch1);
@@ -1688,8 +1693,8 @@ void prec2A_TM3_128(__m128i *ch0,__m128i *ch1) {
ch1[0] = _mm_mulhi_epi16(ch1[0],amp);
ch1[0] = _mm_slli_epi16(ch1[0],1);
// ch0[0] = _mm_srai_epi16(ch0[0],1);
// ch1[0] = _mm_srai_epi16(ch1[0],1);
//ch0[0] = _mm_srai_epi16(ch0[0],1);
//ch1[0] = _mm_srai_epi16(ch1[0],1);
// print_shorts("prec2A_TM3 ch0 (after):",ch0);
// print_shorts("prec2A_TM3 ch1 (after):",ch1);
openair1/PHY/LTE_TRANSPORT/dlsch_llr_computation.c
+29
View File
@@ -8831,6 +8831,7 @@ int dlsch_64qam_64qam_llr(LTE_DL_FRAME_PARMS *frame_parms,
len = (nb_rb*12) - pbch_pss_sss_adjust;
}
#if 0
qam64_qam64((short *)rxF,
(short *)rxF_i,
(short *)ch_mag,
@@ -8838,7 +8839,35 @@ int dlsch_64qam_64qam_llr(LTE_DL_FRAME_PARMS *frame_parms,
(short *)llr16,
(short *)rho,
len);
#else
// Round length up to multiple of 16 words
uint32_t len256i = ((len+16)>>4)*16;
int32_t *rxF_256i = (int32_t*) malloc16_clear(len256i*4);
int32_t *rxF_i_256i = (int32_t*) malloc16_clear(len256i*4);
int32_t *ch_mag_256i = (int32_t*) malloc16_clear(len256i*4);
int32_t *ch_mag_i_256i = (int32_t*) malloc16_clear(len256i*4);
int32_t *rho_256i = (int32_t*) malloc16_clear(len256i*4);
memcpy(rxF_256i, rxF, len*4);
memcpy(rxF_i_256i, rxF_i, len*4);
memcpy(ch_mag_256i, ch_mag, len*4);
memcpy(ch_mag_i_256i, ch_mag_i, len*4);
memcpy(rho_256i, rho, len*4);
qam64_qam64_avx2((int32_t *)rxF_256i,
(int32_t *)rxF_i_256i,
(int32_t *)ch_mag_256i,
(int32_t *)ch_mag_i_256i,
(int16_t *)llr16,
(int32_t *) rho_256i,
len);
free16(rxF_256i, sizeof(rxF_256i));
free16(rxF_i_256i, sizeof(rxF_i_256i));
free16(ch_mag_256i, sizeof(ch_mag_256i));
free16(ch_mag_i_256i, sizeof(ch_mag_i_256i));
free16(rho_256i, sizeof(rho_256i));
#endif
llr16 += (6*len);
*llr16p = (short *)llr16;
return(0);
openair1/PHY/LTE_TRANSPORT/proto.h
+16
View File
@@ -746,6 +746,22 @@ void qam64_qam64(short *stream0_in,
short *rho01,
int length);
/** \brief This function computes the LLRs for ML (max-logsum approximation) dual-stream 64QAM/64QAM reception.
@param stream0_in Input from channel compensated (MR combined) stream 0
@param stream1_in Input from channel compensated (MR combined) stream 1
@param ch_mag Input from scaled channel magnitude square of h0'*g0
@param ch_mag_i Input from scaled channel magnitude square of h0'*g1
@param stream0_out Output from LLR unit for stream0
@param rho01 Cross-correlation between channels (MR combined)
@param length in complex channel outputs*/
void qam64_qam64_avx2(int32_t *stream0_in,
int32_t *stream1_in,
int32_t *ch_mag,
int32_t *ch_mag_i,
int16_t *stream0_out,
int32_t *rho01,
int length);
/** \brief This function perform LLR computation for dual-stream (64QAM/64QAM) transmission.
@param frame_parms Frame descriptor structure
@param rxdataF_comp Compensated channel output
openair1/PHY/Makefile.inc
+1
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@@ -7,6 +7,7 @@ PHY_OBJS += $(TOP_DIR)/PHY/LTE_TRANSPORT/dlsch_coding.o
PHY_OBJS += $(TOP_DIR)/PHY/LTE_TRANSPORT/dlsch_modulation.o
PHY_OBJS += $(TOP_DIR)/PHY/LTE_TRANSPORT/dlsch_demodulation.o
PHY_OBJS += $(TOP_DIR)/PHY/LTE_TRANSPORT/dlsch_llr_computation.o
PHY_OBJS += $(TOP_DIR)/PHY/LTE_TRANSPORT/dlsch_llr_computation_avx2.o
PHY_OBJS += $(TOP_DIR)/PHY/LTE_TRANSPORT/power_control.o
PHY_OBJS += $(TOP_DIR)/PHY/LTE_TRANSPORT/dlsch_decoding.o
PHY_OBJS += $(TOP_DIR)/PHY/LTE_TRANSPORT/dlsch_scrambling.o