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Commit 64ae2d5d authored by Hongzhi Wang's avatar Hongzhi Wang
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update pdsch dmrs

parent 698dfac0
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Showing with 31 additions and 112 deletions
openair1/PHY/NR_REFSIG/nr_dmrs_rx.c
View file @ 64ae2d5d
......@@ -30,7 +30,6 @@
* \warning
*/
//#define DEBUG_DL_DMRS
//#define NR_PBCH_DMRS_LENGTH_DWORD 5
//#define NR_PBCH_DMRS_LENGTH 144
......@@ -50,101 +49,27 @@ int wf2[12][2] = {{1,1},{1,-1},{1,1},{1,-1},{1,1},{1,-1},{1,1},{1,1},{1,1},{1,-1
int wt2[12][2] = {{1,1},{1,1},{1,1},{1,1},{1,1},{1,1},{1,-1},{1,-1},{1,-1},{1,-1},{1,-1},{1,-1}};
short nr_rx_mod_table[14] = {0,0,23170,-23170,-23170,23170,23170,-23170,23170,23170,-23170,-23170,-23170,23170};
short nr_rx_mod_table[14] = {0,0,23170,-23170,-23170,23170,23170,-23170,23170,23170,-23170,-23170,-23170,23170};
short nr_rx_nmod_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[7][20][3][10],
int32_t *output,
unsigned short p,
int length_dmrs,
unsigned short nb_rb_coreset)
{
int32_t qpsk[4],n;
int w,ind,l,ind_dword,ind_qpsk_symb,kp,k;
short pamp;
pamp = ONE_OVER_SQRT2_Q15;
// This includes complex conjugate for channel estimation
((short *)&qpsk[0])[0] = pamp;
((short *)&qpsk[0])[1] = -pamp;
((short *)&qpsk[1])[0] = -pamp;
((short *)&qpsk[1])[1] = -pamp;
((short *)&qpsk[2])[0] = pamp;
((short *)&qpsk[2])[1] = pamp;
((short *)&qpsk[3])[0] = -pamp;
((short *)&qpsk[3])[1] = pamp;
if (p==2000) {
for (n=0; n<nb_rb_coreset*3; n++) {
for (l =0; l<length_dmrs; l++){
for (kp=0; kp<3; kp++){
ind = 3*n+kp;
ind_dword = ind>>4;
ind_qpsk_symb = ind&0xf;
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",
Ns,p,idx_dword,idx_qpsk_symb);
LOG_I(PHY,"index = %d\n",(nr_gold_pdsch[0][Ns][lprime][ind_dword]>>(2*ind_qpsk_symb))&3);
#endif
k++;
}
}
}
} else {
LOG_E(PHY,"Illegal PDCCH DMRS port %d\n",p);
}
return(0);
}*/
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,
int32_t *output,
unsigned short p,
int length_dmrs,
unsigned short nb_rb_pdsch)
unsigned char p,
unsigned char lp,
unsigned short nb_pdsch_rb)
{
int32_t qpsk[4],nqpsk[4],*qpsk_p, n;
int w,mprime,ind,l,ind_dword,ind_qpsk_symb,kp,lp, config_type, k;
short pamp;
int8_t w,config_type;
short *mod_table;
unsigned char idx=0;
typedef int array_of_w[2];
array_of_w *wf;
array_of_w *wt;
config_type = 1;
printf("dmrs config type %d port %d\n", config_type, p);
// Compute the correct pilot amplitude, sqrt_rho_b = Q3.13
pamp = ONE_OVER_SQRT2_Q15;
// This includes complex conjugate for channel estimation
((short *)&qpsk[0])[0] = pamp;
((short *)&qpsk[0])[1] = -pamp;
((short *)&qpsk[1])[0] = -pamp;
((short *)&qpsk[1])[1] = -pamp;
((short *)&qpsk[2])[0] = pamp;
((short *)&qpsk[2])[1] = pamp;
((short *)&qpsk[3])[0] = -pamp;
((short *)&qpsk[3])[1] = pamp;
((short *)&nqpsk[0])[0] = -pamp;
((short *)&nqpsk[0])[1] = pamp;
((short *)&nqpsk[1])[0] = pamp;
((short *)&nqpsk[1])[1] = pamp;
((short *)&nqpsk[2])[0] = -pamp;
((short *)&nqpsk[2])[1] = -pamp;
((short *)&nqpsk[3])[0] = pamp;
((short *)&nqpsk[3])[1] = -pamp;
config_type = 0; //to be updated by higher layer
wf = (config_type==0) ? wf1 : wf2;
wt = (config_type==0) ? wt1 : wt2;
......@@ -153,31 +78,26 @@ int nr_pdsch_dmrs_rx(PHY_VARS_NR_UE *ue,
LOG_E(PHY,"Bad PDSCH DMRS config type %d\n", config_type);
if ((p>=1000) && (p<((config_type==0) ? 1008 : 1012))) {
if (ue->frame_parms.Ncp == NORMAL) {
// r_n from 38.211 7.4.1.1
for (n=0; n<nb_rb_pdsch*((config_type==0) ? 3:2); n++) {
for (lp =0; lp<length_dmrs; lp++){
for (kp=0; kp<2; kp++){
w = (wf[p-1000][kp])*(wt[p-1000][lp]);
qpsk_p = (w==1) ? qpsk : nqpsk;
ind = 2*n+kp;
ind_dword = ind>>4;
ind_qpsk_symb = ind&0xf;
for (int i=0; i<nb_pdsch_rb*((config_type==0) ? 6:4); i++) {
output[k] = qpsk_p[(nr_gold_pdsch[0][Ns][lp][ind_dword]>>(2*ind_qpsk_symb))&3];
w = (wf[p-1000][i&1])*(wt[p-1000][lp]);
mod_table = (w==1) ? nr_rx_mod_table : nr_rx_nmod_table;
#ifdef DEBUG_DL_DMRS
LOG_I(PHY,"Ns %d, p %d, ind_dword %d, ind_qpsk_symbol %d\n",
Ns,p,idx_dword,idx_qpsk_symb);
LOG_I(PHY,"index = %d\n",(nr_gold_pdsch[0][Ns][lprime][ind_dword]>>(2*ind_qpsk_symb))&3);
idx = ((((nr_gold_pdsch[(i<<1)>>5])>>((i<<1)&0x1f))&1)<<1) ^ (((nr_gold_pdsch[((i<<1)+1)>>5])>>(((i<<1)+1)&0x1f))&1);
((int16_t*)output)[i<<1] = mod_table[(NR_MOD_TABLE_QPSK_OFFSET + idx)<<1];
((int16_t*)output)[(i<<1)+1] = mod_table[((NR_MOD_TABLE_QPSK_OFFSET + idx)<<1) + 1];
#ifdef DEBUG_PDSCH
printf("nr_pdsch_dmrs_rx dmrs config type %d port %d nb_pdsch_rb %d\n", config_type, p, nb_pdsch_rb);
printf("wf[%d] = %d wt[%d]= %d\n", i&1, wf[p-1000][i&1], lp, wt[p-1000][lp]);
printf("i %d idx %d pdsch gold %u b0-b1 %d-%d mod_dmrs %d %d\n", i, idx, nr_gold_pdsch[(i<<1)>>5], (((nr_gold_pdsch[(i<<1)>>5])>>((i<<1)&0x1f))&1),
(((nr_gold_pdsch[((i<<1)+1)>>5])>>(((i<<1)+1)&0x1f))&1), ((int16_t*)output)[i<<1], ((int16_t*)output)[(i<<1)+1]);
#endif
k++;
}
}
}
}
} else {
LOG_E(PHY,"extended cp not supported for PDSCH DMRS yet\n");
}
} else {
LOG_E(PHY,"Illegal p %d PDSCH DMRS port\n",p);
}
......
openair1/PHY/NR_REFSIG/nr_gold_ue.c
View file @ 64ae2d5d
......@@ -143,7 +143,7 @@ void nr_gold_pdsch(PHY_VARS_NR_UE* ue,unsigned short lbar,unsigned short *n_idDM
//printf("x1 : %x, x2 : %x\n",x1,x2);
}
for (n=0; n<14; n++) {
for (n=0; n<52; n++) {
x1 = (x1>>1) ^ (x1>>4);
x1 = x1 ^ (x1<<31) ^ (x1<<28);
x2 = (x2>>1) ^ (x2>>2) ^ (x2>>3) ^ (x2>>4);
......
openair1/PHY/NR_REFSIG/refsig_defs_ue.h
View file @ 64ae2d5d
......@@ -43,13 +43,12 @@ int nr_pdcch_dmrs_rx(PHY_VARS_NR_UE *ue,
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,
int32_t *output,
unsigned short p,
int length_dmrs,
unsigned short nb_rb_pdsch);
unsigned char p,
unsigned char lp,
unsigned short nb_pdsch_rb);
void nr_gold_pbch(PHY_VARS_NR_UE* ue);
......
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