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ue adding nr pdsch channel est

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This commit is contained in:
Hongzhi Wang
2018-07-10 16:34:36 +02:00
parent 8ee10be253
commit 31d5682d6b
9 changed files with 284 additions and 15 deletions
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openair1/PHY/MODULATION/slot_fep.c
+24
View File
@@ -52,6 +52,8 @@ int nr_slot_fep(PHY_VARS_NR_UE *ue,
//NR_UE_PDCCH *pdcch_vars = ue->pdcch_vars[ue->current_thread_id[Ns>>1]][0];
uint16_t coreset_start_subcarrier = frame_parms->first_carrier_offset;
uint16_t nb_rb_coreset = 24;
uint16_t bwp_start_subcarrier = frame_parms->first_carrier_offset;
uint16_t nb_rb_pdsch = 100;
/*LTE_UE_DLSCH_t **dlsch_ue = phy_vars_ue->dlsch_ue[eNB_id];
unsigned char harq_pid = dlsch_ue[0]->current_harq_pid;
@@ -255,6 +257,28 @@ int nr_slot_fep(PHY_VARS_NR_UE *ue,
}
break;
case NR_PDSCH_EST:
for (aa=0; aa<frame_parms->nb_antenna_ports_eNB; aa++) {
#ifdef DEBUG_FEP
printf("Channel estimation eNB %d, aatx %d, slot %d, symbol %d\n",eNB_id,aa,Ns,l);
#endif
#if UE_TIMING_TRACE
start_meas(&ue->dlsch_channel_estimation_stats);
#endif
nr_pdsch_channel_estimation(ue,eNB_id,0,
Ns,
aa,
l,
symbol,
bwp_start_subcarrier,
nb_rb_pdsch);
#if UE_TIMING_TRACE
stop_meas(&ue->dlsch_channel_estimation_stats);
#endif
}
break;
case NR_SSS_EST:
break;
openair1/PHY/NR_REFSIG/nr_dmrs_rx.c
+6 -4
View File
@@ -53,8 +53,9 @@ int wt2[12][2] = {{1,1},{1,1},{1,1},{1,1},{1,1},{1,1},{1,-1},{1,-1},{1,-1},{1,-1
short nr_mod_table[14] = {0,0,23170,-23170,-23170,23170,23170,-23170,23170,23170,-23170,-23170,-23170,23170};
int nr_pdcch_dmrs_rx(PHY_VARS_NR_UE *ue,
uint8_t eNB_offset,
unsigned int Ns,
unsigned int nr_gold_pdcch[2][20][3][10],
unsigned int nr_gold_pdcch[7][20][3][10],
int32_t *output,
unsigned short p,
int length_dmrs,
@@ -87,7 +88,7 @@ int nr_pdcch_dmrs_rx(PHY_VARS_NR_UE *ue,
ind_dword = ind>>4;
ind_qpsk_symb = ind&0xf;
output[k] = qpsk[(ue->nr_gold_pdcch[0][Ns][l][ind_dword]>>(2*ind_qpsk_symb))&3];
output[k] = qpsk[(nr_gold_pdcch[eNB_offset][Ns][l][ind_dword]>>(2*ind_qpsk_symb))&3];
#ifdef DEBUG_DL_DMRS
LOG_I(PHY,"Ns %d, p %d, ind_dword %d, ind_qpsk_symbol %d\n",
@@ -107,8 +108,9 @@ int nr_pdcch_dmrs_rx(PHY_VARS_NR_UE *ue,
}
int nr_pdsch_dmrs_rx(PHY_VARS_NR_UE *ue,
uint8_t eNB_offset,
unsigned int Ns,
unsigned int nr_gold_pdsch[2][20][2][21],
unsigned int nr_gold_pdsch[7][20][2][21],
int32_t *output,
unsigned short p,
int length_dmrs,
@@ -166,7 +168,7 @@ int nr_pdsch_dmrs_rx(PHY_VARS_NR_UE *ue,
ind_dword = ind>>4;
ind_qpsk_symb = ind&0xf;
output[k] = qpsk_p[(ue->nr_gold_pdsch[0][Ns][lp][ind_dword]>>(2*ind_qpsk_symb))&3];
output[k] = qpsk_p[(nr_gold_pdsch[0][Ns][lp][ind_dword]>>(2*ind_qpsk_symb))&3];
#ifdef DEBUG_DL_DMRS
openair1/PHY/NR_REFSIG/nr_gold_ue.c
+5 -5
View File
@@ -64,7 +64,7 @@ void nr_gold_pbch(PHY_VARS_NR_UE* ue)
}
void nr_gold_pdcch(PHY_VARS_NR_UE* ue,unsigned int nr_gold_pdcch[20][2][10],unsigned int Nid_cell, unsigned short n_idDMRS, unsigned short length_dmrs)
void nr_gold_pdcch(PHY_VARS_NR_UE* ue,unsigned int Nid_cell, unsigned short n_idDMRS, unsigned short length_dmrs)
{
unsigned char ns,l;
@@ -101,14 +101,14 @@ void nr_gold_pdcch(PHY_VARS_NR_UE* ue,unsigned int nr_gold_pdcch[20][2][10],unsi
x1 = x1 ^ (x1<<31) ^ (x1<<28);
x2 = (x2>>1) ^ (x2>>2) ^ (x2>>3) ^ (x2>>4);
x2 = x2 ^ (x2<<31) ^ (x2<<30) ^ (x2<<29) ^ (x2<<28);
nr_gold_pdcch[ns][l][n] = x1^x2;
ue->nr_gold_pdcch[0][ns][l][n] = x1^x2;
//printf("n=%d : c %x\n",n,x1^x2);
}
}
}
}
void nr_gold_pdsch(PHY_VARS_NR_UE* ue,unsigned short lbar,unsigned int nr_gold_pdsch[2][20][2][21],unsigned int Nid_cell, unsigned short *n_idDMRS, unsigned short length_dmrs)
void nr_gold_pdsch(PHY_VARS_NR_UE* ue,unsigned short lbar,unsigned int Nid_cell, unsigned short *n_idDMRS, unsigned short length_dmrs)
{
unsigned char ns,l;
@@ -130,7 +130,7 @@ void nr_gold_pdsch(PHY_VARS_NR_UE* ue,unsigned short lbar,unsigned int nr_gold_p
for (l=0; l<length_dmrs; l++) {
x2tmp0 = ((14*ns+(lbar+l)+1)*((nid<<1)+1))<<17;
x2 = (x2tmp0+(nid<<1))%(1<<31); //cinit
x2 = (x2tmp0+(nid<<1)+nscid)%(1<<31); //cinit
x1 = 1+ (1<<31);
x2=x2 ^ ((x2 ^ (x2>>1) ^ (x2>>2) ^ (x2>>3))<<31);
@@ -149,7 +149,7 @@ void nr_gold_pdsch(PHY_VARS_NR_UE* ue,unsigned short lbar,unsigned int nr_gold_p
x1 = x1 ^ (x1<<31) ^ (x1<<28);
x2 = (x2>>1) ^ (x2>>2) ^ (x2>>3) ^ (x2>>4);
x2 = x2 ^ (x2<<31) ^ (x2<<30) ^ (x2<<29) ^ (x2<<28);
nr_gold_pdsch[nscid][ns][l][n] = x1^x2;
ue->nr_gold_pdsch[nscid][ns][l][n] = x1^x2;
//printf("n=%d : c %x\n",n,x1^x2);
}
openair1/PHY/NR_REFSIG/refsig_defs_ue.h
+9 -3
View File
@@ -35,16 +35,18 @@ int nr_pbch_dmrs_rx(unsigned int *nr_gold_pbch, int32_t *output );
@param PHY_VARS_NR_UE* ue structure provides configuration, frame parameters and the pointers to the 32 bits sequence storage tables
*/
int nr_pdcch_dmrs_rx(PHY_VARS_NR_UE *ue,
uint8_t eNB_offset,
unsigned int Ns,
unsigned int nr_gold_pdcch[2][20][3][10],
unsigned int nr_gold_pdcch[7][20][3][10],
int32_t *output,
unsigned short p,
int length_dmrs,
unsigned short nb_rb_corset);
int nr_pdsch_dmrs_rx(PHY_VARS_NR_UE *ue,
uint8_t eNB_offset,
unsigned int Ns,
unsigned int nr_gold_pdsch[2][20][2][21],
unsigned int nr_gold_pdsch[7][20][2][21],
int32_t *output,
unsigned short p,
int length_dmrs,
@@ -52,9 +54,13 @@ int nr_pdsch_dmrs_rx(PHY_VARS_NR_UE *ue,
void nr_gold_pbch(PHY_VARS_NR_UE* ue);
void nr_gold_pdcch(PHY_VARS_NR_UE* ue,
unsigned int Nid_cell,
unsigned short n_idDMRS,
unsigned short length_dmrs);
void nr_gold_pdsch(PHY_VARS_NR_UE* ue,
unsigned short lbar,
unsigned int nr_gold_pdsch[2][20][2][21],
unsigned int Nid_cell,
unsigned short *n_idDMRS,
unsigned short length_dmrs);
openair1/PHY/NR_UE_ESTIMATION/filt16a_32.h
+25
View File
@@ -84,3 +84,28 @@ short filt16a_2l1[16] = {
short filt16a_2r1[16] = {
-4096,0,4096,8192,12288,16384,0,0,0,0,0,0,0,0,0,0};
/*filter8*/
short filt8_l0[8] = {
16384,8192,0,0,0,0,0,0};
short filt8_mr0[8] = {
0,8192,16384,8192,0,-8192,0,0};
short filt8_r0[8] = {
0,8192,16384,24576,0,0,0,0};
short filt8_m0[8] = {
0,8192,16384,8192,0,0,0,0};
short filt8_l1[8] = {
24576,16384,0,0,0,0,0,0};
short filt8_ml1[8] = {
-8192,0,8192,16384,8192,0,0,0};
short filt8_r1[8] = {
0,0,8192,16384,0,0,0,0};
short filt8_m1[8] = {
0,0,8192,16384,8192,0,0,0};
openair1/PHY/NR_UE_ESTIMATION/nr_dl_channel_estimation.c
+192 -1
View File
@@ -267,7 +267,7 @@ int nr_pdcch_channel_estimation(PHY_VARS_NR_UE *ue,
fr = filt16a_r1;
// generate pilot
nr_pdcch_dmrs_rx(ue->nr_gold_pdcch[0][Ns][symbol], &pilot[p][0]);
nr_pdcch_dmrs_rx(ue,eNB_offset,Ns,ue->nr_gold_pdcch[eNB_offset][Ns][symbol], &pilot[p][0],2000,symbol, nb_rb_coreset);
for (aarx=0; aarx<ue->frame_parms.nb_antennas_rx; aarx++) {
@@ -392,3 +392,194 @@ int nr_pdcch_channel_estimation(PHY_VARS_NR_UE *ue,
return(0);
}
int nr_pdsch_channel_estimation(PHY_VARS_NR_UE *ue,
uint8_t eNB_id,
uint8_t eNB_offset,
unsigned char Ns,
unsigned char p,
unsigned char l,
unsigned char symbol,
unsigned short bwp_start_subcarrier,
unsigned short nb_rb_pdsch)
{
int pilot[2][200] __attribute__((aligned(16)));
unsigned char aarx;
unsigned short k;
unsigned int pilot_cnt;
int16_t ch[2],*pil,*rxF,*dl_ch,*fl,*fm,*fr,*fml,*fmr;
int ch_offset,symbol_offset;
//uint16_t Nid_cell = (eNB_offset == 0) ? ue->frame_parms.Nid_cell : ue->measurements.adj_cell_id[eNB_offset-1];
uint8_t nushift;
int **dl_ch_estimates =ue->common_vars.common_vars_rx_data_per_thread[ue->current_thread_id[Ns>>1]].dl_ch_estimates[eNB_offset];
int **rxdataF=ue->common_vars.common_vars_rx_data_per_thread[ue->current_thread_id[Ns>>1]].rxdataF;
nushift = (p>>1)&1;
ue->frame_parms.nushift = nushift;
if (ue->high_speed_flag == 0) // use second channel estimate position for temporary storage
ch_offset = ue->frame_parms.ofdm_symbol_size ;
else
ch_offset = ue->frame_parms.ofdm_symbol_size*symbol;
symbol_offset = ue->frame_parms.ofdm_symbol_size*symbol;
k = bwp_start_subcarrier;
#ifdef DEBUG_CH
printf("PBCH Channel Estimation : ThreadId %d, eNB_offset %d cell_id %d ch_offset %d, OFDM size %d, Ncp=%d, l=%d, Ns=%d, k=%d symbol %d\n",ue->current_thread_id[Ns>>1], eNB_offset,Nid_cell,ch_offset,ue->frame_parms.ofdm_symbol_size,
ue->frame_parms.Ncp,l,Ns,k, symbol);
#endif
switch (nushift) {
case 0:
fl = filt8_l0;
fm = filt8_m0;
fr = filt8_r0;
fml = filt8_m0;
fmr = filt8_mr0;
break;
case 1:
fl = filt8_l1;
fm = filt8_m1;
fr = filt8_r1;
fml = filt8_ml1;
fmr = filt8_m1;
break;
default:
msg("pdsch_channel_estimation: nushift=%d -> ERROR\n",nushift);
return(-1);
break;
}
// generate pilot
nr_pdsch_dmrs_rx(ue,eNB_offset,Ns,ue->nr_gold_pdsch[eNB_offset][Ns][symbol], &pilot[p][0],1000,1,nb_rb_pdsch);
for (aarx=0; aarx<ue->frame_parms.nb_antennas_rx; aarx++) {
pil = (int16_t *)&pilot[p][0];
rxF = (int16_t *)&rxdataF[aarx][(symbol_offset+k+nushift)];
dl_ch = (int16_t *)&dl_ch_estimates[(p<<1)+aarx][ch_offset];
memset(dl_ch,0,4*(ue->frame_parms.ofdm_symbol_size));
if (ue->high_speed_flag==0) // multiply previous channel estimate by ch_est_alpha
multadd_complex_vector_real_scalar(dl_ch-(ue->frame_parms.ofdm_symbol_size<<1),
ue->ch_est_alpha,dl_ch-(ue->frame_parms.ofdm_symbol_size<<1),
1,ue->frame_parms.ofdm_symbol_size);
#ifdef DEBUG_CH
printf("ch est pilot addr %p RB_DL %d\n",&pilot[p][0], ue->frame_parms.N_RB_DL);
printf("k %d, first_carrier %d\n",k,ue->frame_parms.first_carrier_offset);
printf("rxF addr %p\n", rxF);
printf("dl_ch addr %p\n",dl_ch);
#endif
if ((ue->frame_parms.N_RB_DL&1)==0) {
// Treat first 2 pilots specially (left edge)
ch[0] = (int16_t)(((int32_t)pil[0]*rxF[0] - (int32_t)pil[1]*rxF[1])>>15);
ch[1] = (int16_t)(((int32_t)pil[0]*rxF[1] + (int32_t)pil[1]*rxF[0])>>15);
#ifdef DEBUG_CH
printf("ch 0 %d\n",((int32_t)pil[0]*rxF[0] - (int32_t)pil[1]*rxF[1]));
printf("pilot 0 : rxF - > (%d,%d) addr %p ch -> (%d,%d), pil -> (%d,%d) \n",rxF[0],rxF[1],&rxF[0],ch[0],ch[1],pil[0],pil[1]);
#endif
multadd_real_vector_complex_scalar(fl,
ch,
dl_ch,
8);
pil+=2;
rxF+=4;
//for (int i= 0; i<8; i++)
//printf("dl_ch addr %p %d\n", dl_ch+i, *(dl_ch+i));
ch[0] = (int16_t)(((int32_t)pil[0]*rxF[0] - (int32_t)pil[1]*rxF[1])>>15);
ch[1] = (int16_t)(((int32_t)pil[0]*rxF[1] + (int32_t)pil[1]*rxF[0])>>15);
#ifdef DEBUG_CH
printf("pilot 1 : rxF - > (%d,%d) ch -> (%d,%d), pil -> (%d,%d) \n",rxF[0],rxF[1],ch[0],ch[1],pil[0],pil[1]);
#endif
multadd_real_vector_complex_scalar(fml,
ch,
dl_ch,
8);
pil+=2;
rxF+=4;
dl_ch+=4;
k+=4;
for (pilot_cnt=2; pilot_cnt<(6*(nb_rb_pdsch-1)+4); pilot_cnt+=2) {
if ((pilot_cnt%6)==0)
dl_ch+=4;
if (k >= ue->frame_parms.ofdm_symbol_size){
k-=ue->frame_parms.ofdm_symbol_size;
rxF = (int16_t *)&rxdataF[aarx][(symbol_offset+k+nushift)];}
ch[0] = (int16_t)(((int32_t)pil[0]*rxF[0] - (int32_t)pil[1]*rxF[1])>>15);
ch[1] = (int16_t)(((int32_t)pil[0]*rxF[1] + (int32_t)pil[1]*rxF[0])>>15);
#ifdef DEBUG_CH
printf("pilot %d : rxF - > (%d,%d) ch -> (%d,%d), pil -> (%d,%d) \n",pilot_cnt,rxF[0],rxF[1],ch[0],ch[1],pil[0],pil[1]);
#endif
multadd_real_vector_complex_scalar(fm,
ch,
dl_ch,
8);
pil+=2;
rxF+=4;
dl_ch+=4;
ch[0] = (int16_t)(((int32_t)pil[0]*rxF[0] - (int32_t)pil[1]*rxF[1])>>15);
ch[1] = (int16_t)(((int32_t)pil[0]*rxF[1] + (int32_t)pil[1]*rxF[0])>>15);
#ifdef DEBUG_CH
printf("pilot %d : rxF - > (%d,%d) ch -> (%d,%d), pil -> (%d,%d) \n",pilot_cnt+1,rxF[0],rxF[1],ch[0],ch[1],pil[0],pil[1]);
#endif
multadd_real_vector_complex_scalar(fm,
ch,
dl_ch,
8);
pil+=2;
rxF+=4;
dl_ch+=4;
k+=4;
}
// Treat first 2 pilots specially (right edge)
ch[0] = (int16_t)(((int32_t)pil[0]*rxF[0] - (int32_t)pil[1]*rxF[1])>>15);
ch[1] = (int16_t)(((int32_t)pil[0]*rxF[1] + (int32_t)pil[1]*rxF[0])>>15);
#ifdef DEBUG_CH
printf("ch 0 %d\n",((int32_t)pil[0]*rxF[0] - (int32_t)pil[1]*rxF[1]));
printf("pilot 0 : rxF - > (%d,%d) addr %p ch -> (%d,%d), pil -> (%d,%d) \n",rxF[0],rxF[1],&rxF[0],ch[0],ch[1],pil[0],pil[1]);
#endif
multadd_real_vector_complex_scalar(fmr,
ch,
dl_ch,
8);
pil+=2;
rxF+=4;
//for (int i= 0; i<8; i++)
//printf("dl_ch addr %p %d\n", dl_ch+i, *(dl_ch+i));
ch[0] = (int16_t)(((int32_t)pil[0]*rxF[0] - (int32_t)pil[1]*rxF[1])>>15);
ch[1] = (int16_t)(((int32_t)pil[0]*rxF[1] + (int32_t)pil[1]*rxF[0])>>15);
#ifdef DEBUG_CH
printf("pilot 1 : rxF - > (%d,%d) ch -> (%d,%d), pil -> (%d,%d) \n",rxF[0],rxF[1],ch[0],ch[1],pil[0],pil[1]);
#endif
multadd_real_vector_complex_scalar(fr,
ch,
dl_ch,
8);
pil+=2;
rxF+=4;
dl_ch+=4;
k+=4;
}
}
return(0);
}
openair1/PHY/NR_UE_ESTIMATION/nr_estimation.h
+10
View File
@@ -59,4 +59,14 @@ int nr_pbch_channel_estimation(PHY_VARS_NR_UE *ue,
unsigned char p,
unsigned char l,
unsigned char symbol);
int nr_pdsch_channel_estimation(PHY_VARS_NR_UE *ue,
uint8_t eNB_id,
uint8_t eNB_offset,
unsigned char Ns,
unsigned char p,
unsigned char l,
unsigned char symbol,
unsigned short bwp_start_subcarrier,
unsigned short nb_rb_pdsch);
#endif
openair1/PHY/defs_nr_UE.h
+1 -1
View File
@@ -995,7 +995,7 @@ typedef struct {
uint32_t nr_gold_pdsch[2][20][2][21];
/// PDCCH DMRS
uint32_t nr_gold_pdcch[2][20][3][10];
uint32_t nr_gold_pdcch[7][20][3][10];
uint32_t X_u[64][839];
openair1/SCHED_NR_UE/phy_procedures_nr_ue.c
+12 -1
View File
@@ -5944,6 +5944,7 @@ int phy_procedures_UE_RX(PHY_VARS_NR_UE *ue,UE_nr_rxtx_proc_t *proc,uint8_t eNB_
LOG_D(PHY," ------ --> FFT/ChannelEst/PDCCH slot 0: AbsSubframe %d.%d ------ \n", frame_rx%1024, nr_tti_rx);
nr_gold_pdcch(ue,ue->frame_parms.Nid_cell, 0, 3);
for (; l<=3; l++) {
if (abstraction_flag == 0) {
@@ -6014,6 +6015,17 @@ int phy_procedures_UE_RX(PHY_VARS_NR_UE *ue,UE_nr_rxtx_proc_t *proc,uint8_t eNB_
#endif
LOG_D(PHY," ------ --> PDSCH ChannelComp/LLR slot 0: AbsSubframe %d.%d ------ \n", frame_rx%1024, nr_tti_rx);
//to update from pdsch config
nr_gold_pdsch(ue,0,ue->frame_parms.Nid_cell, 0, 1);
nr_slot_fep(ue,
2, //to be updated from higher layer
(nr_tti_rx<<1),
0,
0,
0,
NR_PDSCH_EST);
#if UE_TIMING_TRACE
start_meas(&ue->generic_stat);
#endif
@@ -6038,7 +6050,6 @@ int phy_procedures_UE_RX(PHY_VARS_NR_UE *ue,UE_nr_rxtx_proc_t *proc,uint8_t eNB_
if ((ue->dlsch_SI[eNB_id]) && (ue->dlsch_SI[eNB_id]->active == 1)) {
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PDSCH_PROC_SI, VCD_FUNCTION_IN);
ue_pdsch_procedures(ue,
proc,
eNB_id,
SI_PDSCH,