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Commit 1383a49c authored by Vincent Savaux's avatar Vincent Savaux
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Adapt llr_QPSK to NB-IoT

parent 23aeaa88
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Showing with 96 additions and 17 deletions
openair1/PHY/LTE_TRANSPORT/dlsch_demodulation_NB_IoT.c
View file @ 1383a49c
......@@ -762,25 +762,23 @@ int rx_npdsch_NB_IoT(PHY_VARS_UE_NB_IoT *ue,
switch (dlsch0_harq->Qm) {
case 2 :
if (codeword_TB1 == -1) {
dlsch_qpsk_llr(frame_parms,
dlsch_qpsk_llr_NB_IoT(frame_parms,
pdsch_vars[eNB_id]->rxdataF_comp0,
pdsch_vars[eNB_id]->llr[0],
symbol,
first_symbol_flag,
nb_rb,
adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,2,subframe,symbol),
pdsch_vars[eNB_id]->llr128,
beamforming_mode);
} else if (codeword_TB0 == -1){
dlsch_qpsk_llr(frame_parms,
dlsch_qpsk_llr_NB_IoT(frame_parms,
pdsch_vars[eNB_id]->rxdataF_comp0,
pdsch_vars[eNB_id]->llr[1],
symbol,
first_symbol_flag,
nb_rb,
adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,2,subframe,symbol),
pdsch_vars[eNB_id]->llr128_2ndstream,
beamforming_mode);
}
......@@ -1048,11 +1046,10 @@ int rx_npdsch_NB_IoT(PHY_VARS_UE_NB_IoT *ue,
switch (get_Qm(dlsch1_harq->mcs)) {
case 2 :
//if (rx_type==rx_standard) {
dlsch_qpsk_llr(frame_parms,
dlsch_qpsk_llr_NB_IoT(frame_parms,
pdsch_vars[eNB_id]->rxdataF_comp0,
pdsch_vars[eNB_id]->llr[0],
symbol,first_symbol_flag,nb_rb,
adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,2,subframe,symbol),
pdsch_vars[eNB_id]->llr128,
beamforming_mode);
//}
......@@ -6127,3 +6124,67 @@ void print_ints(char *s,__m128i *x)
}*/
#endif
int dlsch_qpsk_llr_NB_IoT(NB_IoT_DL_FRAME_PARMS *frame_parms,
int32_t **rxdataF_comp,
int16_t *dlsch_llr,
uint8_t symbol,
uint8_t first_symbol_flag,
uint16_t nb_rb,
int16_t **llr32p,
uint8_t beamforming_mode)
{
uint32_t *rxF = (uint32_t*)&rxdataF_comp[0][((int32_t)symbol*frame_parms->N_RB_DL*12)];
uint32_t *llr32;
int i,len;
uint8_t symbol_mod = (symbol >= 7)? (symbol-7) : symbol;
if (first_symbol_flag==1) {
llr32 = (uint32_t*)dlsch_llr;
} else {
llr32 = (uint32_t*)(*llr32p);
}
if (!llr32) {
msg("dlsch_qpsk_llr: llr is null, symbol %d, llr32=%p\n",symbol, llr32);
return(-1);
}
// if (symbol_mod==0 || symbol_mod==4) {
// if (frame_parms->mode1_flag==0)
// len = (nb_rb*8) - (2*pbch_pss_sss_adjust/3);
// else
// len = (nb_rb*10) - (5*pbch_pss_sss_adjust/6);
// } else if((beamforming_mode==7) && (frame_parms->Ncp==0) && (symbol==3 || symbol==6 || symbol==9 || symbol==12)){
// len = (nb_rb*9) - (3*pbch_pss_sss_adjust/4);
// } else if((beamforming_mode==7) && (frame_parms->Ncp==1) && (symbol==4 || symbol==7 || symbol==10)){
// len = (nb_rb*8) - (2*pbch_pss_sss_adjust/3);
// } else {
// len = (nb_rb*12) - pbch_pss_sss_adjust;
// }
if (symbol_mod==0 || symbol_mod==4 || symbol_mod==5 || symbol_mod==6) {
if (frame_parms->mode1_flag==0) // MIMO
len = 8 ;
else // SISO
len = 10;
} else {
len = 12;
}
//printf("dlsch_qpsk_llr: symbol %d,nb_rb %d, len %d,pbch_pss_sss_adjust %d\n",symbol,nb_rb,len,pbch_pss_sss_adjust);
//printf("ll32p=%p , dlsch_llr=%p, symbol=%d, flag=%d \n", llr32, dlsch_llr, symbol, first_symbol_flag);
for (i=0; i<len; i++) {
*llr32 = *rxF;
//printf("llr %d : (%d,%d)\n",i,((int16_t*)llr32)[0],((int16_t*)llr32)[1]);
rxF++;
llr32++;
}
*llr32p = (int16_t *)llr32;
return(0);
}
openair1/PHY/LTE_TRANSPORT/dlsch_llr_computation.c
View file @ 1383a49c
......@@ -657,17 +657,26 @@ int dlsch_qpsk_llr(LTE_DL_FRAME_PARMS *frame_parms,
}
if (symbol_mod==0 || symbol_mod==4) {
if (frame_parms->mode1_flag==0)
len = (nb_rb*8) - (2*pbch_pss_sss_adjust/3);
else
len = (nb_rb*10) - (5*pbch_pss_sss_adjust/6);
} else if((beamforming_mode==7) && (frame_parms->Ncp==0) && (symbol==3 || symbol==6 || symbol==9 || symbol==12)){
len = (nb_rb*9) - (3*pbch_pss_sss_adjust/4);
} else if((beamforming_mode==7) && (frame_parms->Ncp==1) && (symbol==4 || symbol==7 || symbol==10)){
len = (nb_rb*8) - (2*pbch_pss_sss_adjust/3);
// if (symbol_mod==0 || symbol_mod==4) {
// if (frame_parms->mode1_flag==0)
// len = (nb_rb*8) - (2*pbch_pss_sss_adjust/3);
// else
// len = (nb_rb*10) - (5*pbch_pss_sss_adjust/6);
// } else if((beamforming_mode==7) && (frame_parms->Ncp==0) && (symbol==3 || symbol==6 || symbol==9 || symbol==12)){
// len = (nb_rb*9) - (3*pbch_pss_sss_adjust/4);
// } else if((beamforming_mode==7) && (frame_parms->Ncp==1) && (symbol==4 || symbol==7 || symbol==10)){
// len = (nb_rb*8) - (2*pbch_pss_sss_adjust/3);
// } else {
// len = (nb_rb*12) - pbch_pss_sss_adjust;
// }
if (symbol_mod==0 || symbol_mod==4 || symbol_mod==5 || symbol_mod==6) {
if (frame_parms->mode1_flag==0) // MIMO
len = 8 ;
else // SISO
len = 10;
} else {
len = (nb_rb*12) - pbch_pss_sss_adjust;
len = nb_rb*12;
}
......
openair1/PHY/LTE_TRANSPORT/proto_NB_IoT.h
View file @ 1383a49c
......@@ -333,6 +333,15 @@ void dlsch_channel_compensation_NB_IoT(int **rxdataF_ext,
unsigned char output_shift,
PHY_MEASUREMENTS_NB_IoT *measurements);
int dlsch_qpsk_llr_NB_IoT(NB_IoT_DL_FRAME_PARMS *frame_parms,
int32_t **rxdataF_comp,
int16_t *dlsch_llr,
uint8_t symbol,
uint8_t first_symbol_flag,
uint16_t nb_rb,
int16_t **llr32p,
uint8_t beamforming_mode);
//************************************************************//
......
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