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Introducing different shifts for channel compensation log2_maxh0 and log2_maxh1 as well as mcs-dependent offset coefficients interf_unaw_shift_mcs

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for I-UA receiver and interference-free case TM4. Coeeficients for 64 QAM must be revised.
This commit is contained in:
lukashov
2015-12-15 15:57:45 +01:00
parent 7ad4dcd3a1
commit 2b41586884
4 changed files with 58 additions and 38 deletions
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openair1/PHY/LTE_TRANSPORT/dlsch_demodulation.c
+35 -24
View File
@@ -61,7 +61,12 @@ int avg[4];
// [MCS][i_mod (0,1,2) = (2,4,6)]
unsigned char offset_mumimo_llr_drange_fix=0;
uint8_t intefr_unaw_shift;
uint8_t intefr_unaw_shift0;
uint8_t intefr_unaw_shift1;
//inferference-free case
unsigned char interf_unaw_shift_mcs[29]={5, 3, 4, 3, 3, 2, 1, 1, 2, 0, 1, 1, 1, 1, 0, 0,
1, 1, 1, 1, 0, 2, 1, 0, 1, 0, 1, 0, 0} ;
/*
//original values from sebastion + same hand tuning
unsigned char offset_mumimo_llr_drange[29][3]={{8,8,8},{7,7,7},{7,7,7},{7,7,7},{6,6,6},{6,6,6},{6,6,6},{5,5,5},{4,4,4},{1,2,4}, // QPSK
@@ -434,7 +439,11 @@ int rx_pdsch(PHY_VARS_UE *phy_vars_ue,
lte_ue_pdsch_vars[eNB_id]->log2_maxh = log2_approx(avg[0]) - 13 + offset_mumimo_llr_drange[dlsch0_harq->mcs][(get_Qm(dlsch1_harq->mcs)>>1)-1];
}
else
lte_ue_pdsch_vars[eNB_id]->log2_maxh = (log2_approx(avg[0])/2)+intefr_unaw_shift;
// to avoid tails in SNR/BLER curves
lte_ue_pdsch_vars[eNB_id]->log2_maxh0 = (log2_approx(avg[0])/2)+interf_unaw_shift_mcs[dlsch0_harq->mcs];
//printf("I-UA shift layer1 = %d\n",interf_unaw_shift_mcs[dlsch0_harq->mcs]);
lte_ue_pdsch_vars[eNB_id]->log2_maxh1 = (log2_approx(avg[0])/2)+interf_unaw_shift_mcs[dlsch1_harq->mcs];
//printf("I-UA shift layer2 = %d\n",interf_unaw_shift_mcs[dlsch1_harq->mcs] );
}
dlsch_channel_compensation_TM34(frame_parms,
@@ -448,7 +457,8 @@ int rx_pdsch(PHY_VARS_UE *phy_vars_ue,
dlsch0_harq->round,
dlsch0_harq->mimo_mode,
nb_rb,
lte_ue_pdsch_vars[eNB_id]->log2_maxh);
lte_ue_pdsch_vars[eNB_id]->log2_maxh0,
lte_ue_pdsch_vars[eNB_id]->log2_maxh1);
/*
if (symbol == 5) {
@@ -467,7 +477,7 @@ int rx_pdsch(PHY_VARS_UE *phy_vars_ue,
lte_ue_pdsch_vars[eNB_id]->dl_ch_estimates_ext,
&(lte_ue_pdsch_vars[eNB_id]->dl_ch_estimates_ext[2]),
lte_ue_pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round],
lte_ue_pdsch_vars[eNB_id]->log2_maxh);
lte_ue_pdsch_vars[eNB_id]->log2_maxh0);
//to be optimized (just take complex conjugate)
@@ -477,7 +487,7 @@ int rx_pdsch(PHY_VARS_UE *phy_vars_ue,
&(lte_ue_pdsch_vars[eNB_id]->dl_ch_estimates_ext[2]),
lte_ue_pdsch_vars[eNB_id]->dl_ch_estimates_ext,
lte_ue_pdsch_vars[eNB_id]->dl_ch_rho2_ext,
lte_ue_pdsch_vars[eNB_id]->log2_maxh);
lte_ue_pdsch_vars[eNB_id]->log2_maxh1);
//printf("TM3 log2_maxh : %d\n",lte_ue_pdsch_vars[eNB_id]->log2_maxh);
}
@@ -1814,7 +1824,8 @@ void dlsch_channel_compensation_TM34(LTE_DL_FRAME_PARMS *frame_parms,
int round,
MIMO_mode_t mimo_mode,
unsigned short nb_rb,
unsigned char output_shift) {
unsigned char output_shift0,
unsigned char output_shift1) {
#if defined(__x86_64__) || defined(__i386__)
@@ -1924,10 +1935,10 @@ void dlsch_channel_compensation_TM34(LTE_DL_FRAME_PARMS *frame_parms,
// get channel amplitude if not QPSK
mmtmpD0 = _mm_madd_epi16(dl_ch0_128[0],dl_ch0_128[0]);
mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);
mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift0);
mmtmpD1 = _mm_madd_epi16(dl_ch0_128[1],dl_ch0_128[1]);
mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift);
mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift0);
mmtmpD0 = _mm_packs_epi32(mmtmpD0,mmtmpD1);
@@ -1946,7 +1957,7 @@ void dlsch_channel_compensation_TM34(LTE_DL_FRAME_PARMS *frame_parms,
if (pilots==0) {
mmtmpD0 = _mm_madd_epi16(dl_ch0_128[2],dl_ch0_128[2]);
mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);
mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift0);
mmtmpD1 = _mm_packs_epi32(mmtmpD0,mmtmpD0);
@@ -1975,10 +1986,10 @@ void dlsch_channel_compensation_TM34(LTE_DL_FRAME_PARMS *frame_parms,
// get channel amplitude if not QPSK
mmtmpD0 = _mm_madd_epi16(dl_ch1_128[0],dl_ch1_128[0]);
mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);
mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift1);
mmtmpD1 = _mm_madd_epi16(dl_ch1_128[1],dl_ch1_128[1]);
mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift);
mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift1);
mmtmpD0 = _mm_packs_epi32(mmtmpD0,mmtmpD1);
@@ -1996,7 +2007,7 @@ void dlsch_channel_compensation_TM34(LTE_DL_FRAME_PARMS *frame_parms,
if (pilots==0) {
mmtmpD0 = _mm_madd_epi16(dl_ch1_128[2],dl_ch1_128[2]);
mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);
mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift1);
mmtmpD1 = _mm_packs_epi32(mmtmpD0,mmtmpD0);
@@ -2033,10 +2044,10 @@ void dlsch_channel_compensation_TM34(LTE_DL_FRAME_PARMS *frame_parms,
mmtmpD1 = _mm_madd_epi16(mmtmpD1,rxdataF128[0]);
// print_ints("im",&mmtmpD1);
// mmtmpD1 contains imag part of 4 consecutive outputs (32-bit)
mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);
mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift0);
// printf("Shift: %d\n",output_shift);
// print_ints("re(shift)",&mmtmpD0);
mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift);
mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift0);
// print_ints("im(shift)",&mmtmpD1);
mmtmpD2 = _mm_unpacklo_epi32(mmtmpD0,mmtmpD1);
mmtmpD3 = _mm_unpackhi_epi32(mmtmpD0,mmtmpD1);
@@ -2056,8 +2067,8 @@ void dlsch_channel_compensation_TM34(LTE_DL_FRAME_PARMS *frame_parms,
mmtmpD1 = _mm_sign_epi16(mmtmpD1,*(__m128i*)conjugate);
mmtmpD1 = _mm_madd_epi16(mmtmpD1,rxdataF128[1]);
// mmtmpD1 contains imag part of 4 consecutive outputs (32-bit)
mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);
mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift);
mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift0);
mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift0);
mmtmpD2 = _mm_unpacklo_epi32(mmtmpD0,mmtmpD1);
mmtmpD3 = _mm_unpackhi_epi32(mmtmpD0,mmtmpD1);
@@ -2075,8 +2086,8 @@ void dlsch_channel_compensation_TM34(LTE_DL_FRAME_PARMS *frame_parms,
mmtmpD1 = _mm_sign_epi16(mmtmpD1,*(__m128i*)conjugate);
mmtmpD1 = _mm_madd_epi16(mmtmpD1,rxdataF128[2]);
// mmtmpD1 contains imag part of 4 consecutive outputs (32-bit)
mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);
mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift);
mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift0);
mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift0);
mmtmpD2 = _mm_unpacklo_epi32(mmtmpD0,mmtmpD1);
mmtmpD3 = _mm_unpackhi_epi32(mmtmpD0,mmtmpD1);
@@ -2100,9 +2111,9 @@ void dlsch_channel_compensation_TM34(LTE_DL_FRAME_PARMS *frame_parms,
// print_ints("im",&mmtmpD1);
mmtmpD1 = _mm_madd_epi16(mmtmpD1,rxdataF128[0]);
// mmtmpD1 contains imag part of 4 consecutive outputs (32-bit)
mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);
mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift1);
// print_ints("re(shift)",&mmtmpD0);
mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift);
mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift1);
// print_ints("im(shift)",&mmtmpD1);
mmtmpD2 = _mm_unpacklo_epi32(mmtmpD0,mmtmpD1);
mmtmpD3 = _mm_unpackhi_epi32(mmtmpD0,mmtmpD1);
@@ -2121,8 +2132,8 @@ void dlsch_channel_compensation_TM34(LTE_DL_FRAME_PARMS *frame_parms,
mmtmpD1 = _mm_sign_epi16(mmtmpD1,*(__m128i*)conjugate);
mmtmpD1 = _mm_madd_epi16(mmtmpD1,rxdataF128[1]);
// mmtmpD1 contains imag part of 4 consecutive outputs (32-bit)
mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);
mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift);
mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift1);
mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift1);
mmtmpD2 = _mm_unpacklo_epi32(mmtmpD0,mmtmpD1);
mmtmpD3 = _mm_unpackhi_epi32(mmtmpD0,mmtmpD1);
@@ -2140,8 +2151,8 @@ void dlsch_channel_compensation_TM34(LTE_DL_FRAME_PARMS *frame_parms,
mmtmpD1 = _mm_sign_epi16(mmtmpD1,*(__m128i*)conjugate);
mmtmpD1 = _mm_madd_epi16(mmtmpD1,rxdataF128[2]);
// mmtmpD1 contains imag part of 4 consecutive outputs (32-bit)
mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);
mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift);
mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift1);
mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift1);
mmtmpD2 = _mm_unpacklo_epi32(mmtmpD0,mmtmpD1);
mmtmpD3 = _mm_unpackhi_epi32(mmtmpD0,mmtmpD1);
openair1/PHY/LTE_TRANSPORT/proto.h
+2 -1
View File
@@ -979,7 +979,8 @@ void dlsch_channel_compensation_TM34(LTE_DL_FRAME_PARMS *frame_parms,
int round,
MIMO_mode_t mimo_mode,
unsigned short nb_rb,
unsigned char output_shift);
unsigned char output_shift0,
unsigned char output_shift1);
/** \brief This function computes the average channel level over all allocated RBs and antennas (TX/RX) in order to compute output shift for compensated signal
openair1/PHY/impl_defs_lte.h
+4
View File
@@ -841,6 +841,10 @@ typedef struct {
int16_t *llr[2];
/// \f$\log_2(\max|H_i|^2)\f$
int16_t log2_maxh;
/// \f$\log_2(\max|H_i|^2)\f$ //this is for TM3-4 layer1 channel compensation
int16_t log2_maxh0;
/// \f$\log_2(\max|H_i|^2)\f$ //this is for TM3-4 layer2 channel commpensation
int16_t log2_maxh1;
/// \brief LLR shifts for subband scaling.
/// - first index: ? [0..168*N_RB_DL[
uint8_t *llr_shifts;
openair1/SIMULATION/LTE_PHY/dlsim.c
+17 -13
View File
@@ -59,7 +59,8 @@
extern unsigned int dlsch_tbs25[27][25],TBStable[27][110];
extern unsigned char offset_mumimo_llr_drange_fix;
extern uint8_t intefr_unaw_shift;
extern uint8_t interf_unaw_shift0=0;
extern uint8_t interf_unaw_shift1=0;
#ifdef XFORMS
#include "PHY/TOOLS/lte_phy_scope.h"
#endif
@@ -384,7 +385,7 @@ int main(int argc, char **argv)
num_layers = 1;
perfect_ce = 0;
while ((c = getopt (argc, argv, "ahdpZDe:m:n:o:s:f:t:c:g:r:F:x:y:z:AM:N:I:i:O:R:S:C:T:b:u:v:w:B:PLl:YXJ:")) != -1) {
while ((c = getopt (argc, argv, "ahdpZDe:m:n:o:s:f:t:c:g:r:F:x:y:z:AM:N:I:i:O:R:S:C:T:b:u:v:w:B:PLl:YXV:W:")) != -1) {
switch (c) {
case 'a':
awgn_flag = 1;
@@ -631,9 +632,12 @@ int main(int argc, char **argv)
case 'Y':
perfect_ce=1;
break;
case 'J':
intefr_unaw_shift=atoi(optarg);
break;
case 'V':
interf_unaw_shift0=atoi(optarg);
break;
case 'W':
interf_unaw_shift1=atoi(optarg);
break;
case 'h':
default:
printf("%s -h(elp) -a(wgn on) -d(ci decoding on) -p(extended prefix on) -m mcs1 -M mcs2 -n n_frames -s snr0 -x transmission mode (1,2,3,5,6) -y TXant -z RXant -I trch_file\n",argv[0]);
@@ -748,8 +752,8 @@ int main(int argc, char **argv)
printf("n_frames = %d\n",n_frames);
printf("Transmission mode %d with %dx%d antenna configuration, Extended Prefix %d\n",transmission_mode,n_tx,n_rx,extended_prefix_flag);
printf("Using receiver type %d\n", rx_type);
printf("Using I_UA rec shift %d\n", intefr_unaw_shift);
printf("Using I_UA rec shift layer 1 %d\n", interf_unaw_shift0);
printf("Using I_UA rec shift layer 2 %d\n", interf_unaw_shift1);
snr1 = snr0+snr_int;
printf("SNR0 %f, SNR1 %f\n",snr0,snr1);
@@ -781,14 +785,14 @@ int main(int argc, char **argv)
sprintf(bler_fname,"bler_tx%d_rec%d_chan%d_nrx%d_mcs%d_mcsi%d_u%d_imod%d.csv",transmission_mode,rx_type,channel_model,n_rx,mcs1,mcs_i,rx_type,i_mod);
else if (abstx == 1)
if (perfect_ce==1)
sprintf(bler_fname,"bler_tx%d_rec%d_chan%d_nrx%d_mcs%d_mcsi%d_ab_perf_ce_sh%d.csv",transmission_mode,rx_type,channel_model,n_rx,mcs1, mcs2, intefr_unaw_shift );
sprintf(bler_fname,"bler_tx%d_rec%d_chan%d_nrx%d_mcs%d_mcsi%d_ab_perf_ce_sh%d.csv",transmission_mode,rx_type,channel_model,n_rx,mcs1, mcs2, interf_unaw_shift0 );
else
sprintf(bler_fname,"bler_tx%d_rec%d_chan%d_nrx%d_mcs%d_mcsi%d_ab_sh%d.csv",transmission_mode,rx_type,channel_model,n_rx,mcs1, mcs2, intefr_unaw_shift);
sprintf(bler_fname,"bler_tx%d_rec%d_chan%d_nrx%d_mcs%d_mcsi%d_ab_sh%d.csv",transmission_mode,rx_type,channel_model,n_rx,mcs1, mcs2, interf_unaw_shift0);
else //abstx=0
if (perfect_ce==1)
sprintf(bler_fname,"bler_tx%d_rec%d_chan%d_nrx%d_mcs%d_mcsi%d_perf_ce_sh%d.csv",transmission_mode,rx_type,channel_model,n_rx,mcs1, mcs2, intefr_unaw_shift);
sprintf(bler_fname,"bler_tx%d_rec%d_chan%d_nrx%d_mcs%d_mcsi%d_perf_ce_sh%d.csv",transmission_mode,rx_type,channel_model,n_rx,mcs1, mcs2, interf_unaw_shift0);
else
sprintf(bler_fname,"bler_tx%d_rec%d_chan%d_nrx%d_mcs%d_mcsi%d_sh%d.csv",transmission_mode,rx_type,channel_model,n_rx,mcs1, mcs2,intefr_unaw_shift);
sprintf(bler_fname,"bler_tx%d_rec%d_chan%d_nrx%d_mcs%d_mcsi%d_sh%d.csv",transmission_mode,rx_type,channel_model,n_rx,mcs1, mcs2,interf_unaw_shift0);
bler_fd = fopen(bler_fname,"w");
if (bler_fd==NULL) {
@@ -824,9 +828,9 @@ int main(int argc, char **argv)
else
if (perfect_ce==1)
sprintf(csv_fname,"dataout_tx%d_rec%d_mcs%d_mcsi%d_chan%d_ns%d_R%d_ab_perf_ce_sh%d.m",transmission_mode,rx_type,mcs1,mcs2,channel_model,n_frames,num_rounds, intefr_unaw_shift);
sprintf(csv_fname,"dataout_tx%d_rec%d_mcs%d_mcsi%d_chan%d_ns%d_R%d_ab_perf_ce_sh%d.m",transmission_mode,rx_type,mcs1,mcs2,channel_model,n_frames,num_rounds, interf_unaw_shift0);
else
sprintf(csv_fname,"dataout_tx%d_rec%d_mcs%d_mcsi%d_chan%d_ns%d_R%d_ab_sh%d.m",transmission_mode,rx_type,mcs1,mcs2,channel_model,n_frames,num_rounds, intefr_unaw_shift);
sprintf(csv_fname,"dataout_tx%d_rec%d_mcs%d_mcsi%d_chan%d_ns%d_R%d_ab_sh%d.m",transmission_mode,rx_type,mcs1,mcs2,channel_model,n_frames,num_rounds, interf_unaw_shift0);
// sprintf(csv_fname,"dataout_tx%d_mcs%d_mcs_interf%d_chan%d_nsimus%d_R%d_abstr_old.m",transmission_mode,mcs1,mcs2,channel_model,n_frames,num_rounds);
csv_fd = fopen(csv_fname,"w");