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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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Showing with 38 additions and 22 deletions
openair1/PHY/LTE_TRANSPORT/dlsch_demodulation.c
View file @ a6f2310e
...@@ -739,7 +739,8 @@ int rx_pdsch(PHY_VARS_UE *phy_vars_ue, ...@@ -739,7 +739,8 @@ int rx_pdsch(PHY_VARS_UE *phy_vars_ue,
lte_ue_pdsch_vars[eNB_id]->dl_ch_mag0, lte_ue_pdsch_vars[eNB_id]->dl_ch_mag0,
symbol,first_symbol_flag,nb_rb, symbol,first_symbol_flag,nb_rb,
adjust_G2(frame_parms,dlsch0_harq->rb_alloc,4,subframe,symbol), 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) { } else if (i_mod == 2) {
dlsch_16qam_qpsk_llr(frame_parms, dlsch_16qam_qpsk_llr(frame_parms,
lte_ue_pdsch_vars[eNB_id]->rxdataF_comp0, lte_ue_pdsch_vars[eNB_id]->rxdataF_comp0,
...@@ -785,7 +786,8 @@ int rx_pdsch(PHY_VARS_UE *phy_vars_ue, ...@@ -785,7 +786,8 @@ int rx_pdsch(PHY_VARS_UE *phy_vars_ue,
lte_ue_pdsch_vars[eNB_id]->dl_ch_magb0, lte_ue_pdsch_vars[eNB_id]->dl_ch_magb0,
symbol,first_symbol_flag,nb_rb, symbol,first_symbol_flag,nb_rb,
adjust_G2(frame_parms,dlsch0_harq->rb_alloc,6,subframe,symbol), 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) { } else if (i_mod == 2) {
dlsch_64qam_qpsk_llr(frame_parms, dlsch_64qam_qpsk_llr(frame_parms,
lte_ue_pdsch_vars[eNB_id]->rxdataF_comp0, lte_ue_pdsch_vars[eNB_id]->rxdataF_comp0,
......
openair1/PHY/LTE_TRANSPORT/dlsch_llr_computation.c
View file @ a6f2310e
/******************************************************************************* /*
*****************************************************************************
OpenAirInterface OpenAirInterface
Copyright(c) 1999 - 2014 Eurecom Copyright(c) 1999 - 2014 Eurecom
...@@ -663,16 +664,15 @@ int dlsch_qpsk_llr(LTE_DL_FRAME_PARMS *frame_parms, ...@@ -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 ((symbol_mod==0) || (symbol_mod==(4-frame_parms->Ncp))) {
if (frame_parms->mode1_flag==0 && beamforming_mode!=7) 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 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)){ } 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)){ } else if((beamforming_mode==7) && (frame_parms->Ncp==1) && (symbol==4 || symbol==7 || symbol==10)){
len = (nb_rb*8); len = (nb_rb*8) - (2*pbch_pss_sss_adjust/3);
} } else {
else { len = (nb_rb*12) - pbch_pss_sss_adjust;
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); // 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, ...@@ -702,7 +702,8 @@ void dlsch_16qam_llr(LTE_DL_FRAME_PARMS *frame_parms,
uint8_t first_symbol_flag, uint8_t first_symbol_flag,
unsigned short nb_rb, unsigned short nb_rb,
uint16_t pbch_pss_sss_adjust, 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)]; __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, ...@@ -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)]; 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 ((symbol_mod==0) || (symbol_mod==(4-frame_parms->Ncp))) {
if (frame_parms->mode1_flag==0) 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 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 { } 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) // 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, ...@@ -778,7 +783,8 @@ void dlsch_64qam_llr(LTE_DL_FRAME_PARMS *frame_parms,
uint8_t first_symbol_flag, uint8_t first_symbol_flag,
unsigned short nb_rb, unsigned short nb_rb,
uint16_t pbch_pss_sss_adjust, 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)]; __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, ...@@ -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)]; 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 ((symbol_mod==0) || (symbol_mod==(4-frame_parms->Ncp))) {
if (frame_parms->mode1_flag==0) 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 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 { } else {
len = nb_rb*12 - pbch_pss_sss_adjust; len = (nb_rb*12) - pbch_pss_sss_adjust;
} }
llr2 = llr; 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, ...@@ -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 nb_rb number of RBs for this allocation
@param pbch_pss_sss_adjust Adjustment factor in RE for PBCH/PSS/SSS allocations @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 llr128p pointer to pointer to symbol in dlsch_llr
@param beamforming_mode beamforming mode
*/ */
void dlsch_16qam_llr(LTE_DL_FRAME_PARMS *frame_parms, void dlsch_16qam_llr(LTE_DL_FRAME_PARMS *frame_parms,
...@@ -728,7 +729,8 @@ 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, uint8_t first_symbol_flag,
uint16_t nb_rb, uint16_t nb_rb,
uint16_t pbch_pss_sss_adjust, 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 \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, ...@@ -741,6 +743,7 @@ void dlsch_16qam_llr(LTE_DL_FRAME_PARMS *frame_parms,
@param first_symbol_flag @param first_symbol_flag
@param nb_rb number of RBs for this allocation @param nb_rb number of RBs for this allocation
@param pbch_pss_sss_adjust PBCH/PSS/SSS RE adjustment (in REs) @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, void dlsch_64qam_llr(LTE_DL_FRAME_PARMS *frame_parms,
int32_t **rxdataF_comp, int32_t **rxdataF_comp,
...@@ -751,7 +754,8 @@ void dlsch_64qam_llr(LTE_DL_FRAME_PARMS *frame_parms, ...@@ -751,7 +754,8 @@ void dlsch_64qam_llr(LTE_DL_FRAME_PARMS *frame_parms,
uint8_t first_symbol_flag, uint8_t first_symbol_flag,
uint16_t nb_rb, uint16_t nb_rb,
uint16_t pbch_pss_sss_adjust, 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, /** \fn dlsch_siso(LTE_DL_FRAME_PARMS *frame_parms,
int32_t **rxdataF_comp, int32_t **rxdataF_comp,
......
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