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Commit a6f2310e authored by Xiwen JIANG's avatar Xiwen JIANG
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add beamforming mode as an input parameter of llr computation

parent d89807b6
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openair1/PHY/LTE_TRANSPORT/dlsch_demodulation.c
View file @ a6f2310e
......@@ -739,7 +739,8 @@ int rx_pdsch(PHY_VARS_UE *phy_vars_ue,
lte_ue_pdsch_vars[eNB_id]->dl_ch_mag0,
symbol,first_symbol_flag,nb_rb,
adjust_G2(frame_parms,dlsch0_harq->rb_alloc,4,subframe,symbol),
lte_ue_pdsch_vars[eNB_id]->llr128);
lte_ue_pdsch_vars[eNB_id]->llr128,
beamforming_mode);
} else if (i_mod == 2) {
dlsch_16qam_qpsk_llr(frame_parms,
lte_ue_pdsch_vars[eNB_id]->rxdataF_comp0,
......@@ -785,7 +786,8 @@ int rx_pdsch(PHY_VARS_UE *phy_vars_ue,
lte_ue_pdsch_vars[eNB_id]->dl_ch_magb0,
symbol,first_symbol_flag,nb_rb,
adjust_G2(frame_parms,dlsch0_harq->rb_alloc,6,subframe,symbol),
lte_ue_pdsch_vars[eNB_id]->llr128);
lte_ue_pdsch_vars[eNB_id]->llr128,
beamforming_mode);
} else if (i_mod == 2) {
dlsch_64qam_qpsk_llr(frame_parms,
lte_ue_pdsch_vars[eNB_id]->rxdataF_comp0,
......
openair1/PHY/LTE_TRANSPORT/dlsch_llr_computation.c
View file @ a6f2310e
/*******************************************************************************
/*
*****************************************************************************
OpenAirInterface
Copyright(c) 1999 - 2014 Eurecom
......@@ -663,16 +664,15 @@ int dlsch_qpsk_llr(LTE_DL_FRAME_PARMS *frame_parms,
if ((symbol_mod==0) || (symbol_mod==(4-frame_parms->Ncp))) {
if (frame_parms->mode1_flag==0 && beamforming_mode!=7)
len = (nb_rb*8);// - (2*pbch_pss_sss_adjust/3);
len = (nb_rb*8) - (2*pbch_pss_sss_adjust/3);
else
len = (nb_rb*10);// - (5*pbch_pss_sss_adjust/6);
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);
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);
}
else {
len = (nb_rb*12);// - pbch_pss_sss_adjust;
len = (nb_rb*8) - (2*pbch_pss_sss_adjust/3);
} else {
len = (nb_rb*12) - pbch_pss_sss_adjust;
}
// 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);
......@@ -702,7 +702,8 @@ void dlsch_16qam_llr(LTE_DL_FRAME_PARMS *frame_parms,
uint8_t first_symbol_flag,
unsigned short nb_rb,
uint16_t pbch_pss_sss_adjust,
int16_t **llr32p)
int16_t **llr32p,
uint8_t beamforming_mode)
{
__m128i *rxF = (__m128i*)&rxdataF_comp[0][(symbol*frame_parms->N_RB_DL*12)];
......@@ -724,12 +725,16 @@ void dlsch_16qam_llr(LTE_DL_FRAME_PARMS *frame_parms,
ch_mag = (__m128i*)&dl_ch_mag[0][(symbol*frame_parms->N_RB_DL*12)];
if ((symbol_mod==0) || (symbol_mod==(4-frame_parms->Ncp))) {
if (frame_parms->mode1_flag==0)
len = nb_rb*8 - (2*pbch_pss_sss_adjust/3);
if (frame_parms->mode1_flag==0 && beamforming_mode!=7)
len = (nb_rb*8) - (2*pbch_pss_sss_adjust/3);
else
len = nb_rb*10 - (5*pbch_pss_sss_adjust/6);
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;
len = (nb_rb*12) - pbch_pss_sss_adjust;
}
// update output pointer according to number of REs in this symbol (<<2 because 4 bits per RE)
......@@ -778,7 +783,8 @@ void dlsch_64qam_llr(LTE_DL_FRAME_PARMS *frame_parms,
uint8_t first_symbol_flag,
unsigned short nb_rb,
uint16_t pbch_pss_sss_adjust,
short **llr_save)
short **llr_save,
uint8_t beamforming_mode)
{
__m128i *rxF = (__m128i*)&rxdataF_comp[0][(symbol*frame_parms->N_RB_DL*12)];
......@@ -799,12 +805,16 @@ void dlsch_64qam_llr(LTE_DL_FRAME_PARMS *frame_parms,
ch_magb = (__m128i*)&dl_ch_magb[0][(symbol*frame_parms->N_RB_DL*12)];
if ((symbol_mod==0) || (symbol_mod==(4-frame_parms->Ncp))) {
if (frame_parms->mode1_flag==0)
len = nb_rb*8 - (2*pbch_pss_sss_adjust/3);
if (frame_parms->mode1_flag==0 && beamforming_mode!=7)
len = (nb_rb*8) - (2*pbch_pss_sss_adjust/3);
else
len = nb_rb*10 - (5*pbch_pss_sss_adjust/6);
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;
len = (nb_rb*12) - pbch_pss_sss_adjust;
}
llr2 = llr;
......
openair1/PHY/LTE_TRANSPORT/proto.h
View file @ a6f2310e
......@@ -718,6 +718,7 @@ int32_t dlsch_qpsk_llr(LTE_DL_FRAME_PARMS *frame_parms,
@param nb_rb number of RBs for this allocation
@param pbch_pss_sss_adjust Adjustment factor in RE for PBCH/PSS/SSS allocations
@param llr128p pointer to pointer to symbol in dlsch_llr
@param beamforming_mode beamforming mode
*/
void dlsch_16qam_llr(LTE_DL_FRAME_PARMS *frame_parms,
......@@ -728,7 +729,8 @@ void dlsch_16qam_llr(LTE_DL_FRAME_PARMS *frame_parms,
uint8_t first_symbol_flag,
uint16_t nb_rb,
uint16_t pbch_pss_sss_adjust,
int16_t **llr128p);
int16_t **llr128p,
uint8_t beamforming_mode);
/**
\brief This function generates log-likelihood ratios (decoder input) for single-stream 16QAM received waveforms
......@@ -741,6 +743,7 @@ void dlsch_16qam_llr(LTE_DL_FRAME_PARMS *frame_parms,
@param first_symbol_flag
@param nb_rb number of RBs for this allocation
@param pbch_pss_sss_adjust PBCH/PSS/SSS RE adjustment (in REs)
@param beamforming_mode beamforming mode
*/
void dlsch_64qam_llr(LTE_DL_FRAME_PARMS *frame_parms,
int32_t **rxdataF_comp,
......@@ -751,7 +754,8 @@ void dlsch_64qam_llr(LTE_DL_FRAME_PARMS *frame_parms,
uint8_t first_symbol_flag,
uint16_t nb_rb,
uint16_t pbch_pss_sss_adjust,
short **llr_save);
short **llr_save,
uint8_t beamforming_mode);
/** \fn dlsch_siso(LTE_DL_FRAME_PARMS *frame_parms,
int32_t **rxdataF_comp,
......
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