main()
{
unsigned short Nid_cell=0;
unsigned int Ncp = 0;
int output00[1024];
int output01[1024];
int output10[1024];
int output11[1024];
memset(output00,0,1024*sizeof(int));
memset(output01,0,1024*sizeof(int));
memset(output10,0,1024*sizeof(int));
memset(output11,0,1024*sizeof(int));
lte_gold(Nid_cell,Ncp);
lte_dl_cell_spec(output00,
ONE_OVER_SQRT2_Q15,
50,
Nid_cell,
Ncp,
0,
0,
0,
0);
lte_dl_cell_spec(output10,
ONE_OVER_SQRT2_Q15,
50,
Nid_cell,
Ncp,
0,
1,
0,
0);
lte_dl_cell_spec(output01,
ONE_OVER_SQRT2_Q15,
50,
Nid_cell,
Ncp,
0,
0,
1,
0);
lte_dl_cell_spec(output11,
ONE_OVER_SQRT2_Q15,
50,
Nid_cell,
Ncp,
0,
1,
1,
0);
write_output("dl_cell_spec00.m","dl_cs00",output00,1024,1,1);
write_output("dl_cell_spec01.m","dl_cs01",output01,1024,1,1);
write_output("dl_cell_spec10.m","dl_cs10",output10,1024,1,1);
write_output("dl_cell_spec11.m","dl_cs11",output11,1024,1,1);
}
void generate_pilots(PHY_VARS_eNB *phy_vars_eNB,
mod_sym_t **txdataF,
short amp,
unsigned short Ntti) {
LTE_DL_FRAME_PARMS *frame_parms = &phy_vars_eNB->lte_frame_parms;
unsigned int tti,tti_offset,slot_offset,Nsymb,samples_per_symbol;
unsigned char second_pilot;
Nsymb = (frame_parms->Ncp==0)?14:12;
second_pilot = (frame_parms->Ncp==0)?4:3;
// printf("Doing TX pilots Nsymb %d, second_pilot %d\n",Nsymb,second_pilot);
for (tti=0;tti<Ntti;tti++) {
#ifdef IFFT_FPGA
tti_offset = tti*frame_parms->N_RB_DL*12*Nsymb;
samples_per_symbol = frame_parms->N_RB_DL*12;
#else
tti_offset = tti*frame_parms->ofdm_symbol_size*Nsymb;
samples_per_symbol = frame_parms->ofdm_symbol_size;
#endif
slot_offset = (tti*2)%20;
// printf("tti %d : offset %d (slot %d)\n",tti,tti_offset,slot_offset);
//Generate Pilots
//antenna 0 symbol 0 slot 0
lte_dl_cell_spec(phy_vars_eNB,&txdataF[0][tti_offset],
amp,
slot_offset,
0,
0);
// printf("tti %d : second_pilot offset %d \n",tti,tti_offset+(second_pilot*samples_per_symbol));
//antenna 0 symbol 3/4 slot 0
lte_dl_cell_spec(phy_vars_eNB,&txdataF[0][tti_offset+(second_pilot*samples_per_symbol)],
amp,
slot_offset,
1,
0);
// printf("tti %d : third_pilot offset %d \n",tti,tti_offset+((Nsymb>>1)*samples_per_symbol));
//antenna 0 symbol 0 slot 1
lte_dl_cell_spec(phy_vars_eNB,&txdataF[0][tti_offset+((Nsymb>>1)*samples_per_symbol)],
amp,
1+slot_offset,
0,
0);
// printf("tti %d : third_pilot offset %d \n",tti,tti_offset+(((Nsymb>>1)+second_pilot)*samples_per_symbol));
//antenna 0 symbol 3/4 slot 1
lte_dl_cell_spec(phy_vars_eNB,&txdataF[0][tti_offset+(((Nsymb>>1)+second_pilot)*samples_per_symbol)],
amp,
1+slot_offset,
1,
0);
if (frame_parms->nb_antennas_tx > 1) {
if (frame_parms->mode1_flag) {
// antenna 1 symbol 0 slot 0
lte_dl_cell_spec(phy_vars_eNB,&txdataF[1][tti_offset],
amp,
slot_offset,
0,
0);
// antenna 1 symbol 3 slot 0
lte_dl_cell_spec(phy_vars_eNB,&txdataF[1][tti_offset+(second_pilot*samples_per_symbol)],
amp,
slot_offset,
1,
0);
//antenna 1 symbol 0 slot 1
lte_dl_cell_spec(phy_vars_eNB,&txdataF[1][tti_offset+(Nsymb>>1)*samples_per_symbol],
amp,
1+slot_offset,
0,
0);
// antenna 1 symbol 3 slot 1
lte_dl_cell_spec(phy_vars_eNB,&txdataF[1][tti_offset+(((Nsymb>>1)+second_pilot)*samples_per_symbol)],
amp,
1+slot_offset,
1,
0);
}
else {
// antenna 1 symbol 0 slot 0
lte_dl_cell_spec(phy_vars_eNB,&txdataF[1][tti_offset],
amp,
slot_offset,
0,
1);
// antenna 1 symbol 3 slot 0
lte_dl_cell_spec(phy_vars_eNB,&txdataF[1][tti_offset+(second_pilot*samples_per_symbol)],
amp,
slot_offset,
1,
1);
//antenna 1 symbol 0 slot 1
lte_dl_cell_spec(phy_vars_eNB,&txdataF[1][tti_offset+(Nsymb>>1)*samples_per_symbol],
amp,
1+slot_offset,
0,
1);
// antenna 1 symbol 3 slot 1
lte_dl_cell_spec(phy_vars_eNB,&txdataF[1][tti_offset+(((Nsymb>>1)+second_pilot)*samples_per_symbol)],
amp,
1+slot_offset,
1,
1);
}
}
void generate_pilots(PHY_VARS_eNB *eNB,
int32_t **txdataF,
int16_t amp,
uint16_t Ntti)
{
LTE_DL_FRAME_PARMS *frame_parms = &eNB->frame_parms;
uint32_t tti,tti_offset,slot_offset,Nsymb,samples_per_symbol;
uint8_t second_pilot;
Nsymb = (frame_parms->Ncp==0)?14:12;
second_pilot = (frame_parms->Ncp==0)?4:3;
// printf("Doing TX pilots Nsymb %d, second_pilot %d\n",Nsymb,second_pilot);
for (tti=0; tti<Ntti; tti++) {
tti_offset = tti*frame_parms->ofdm_symbol_size*Nsymb;
samples_per_symbol = frame_parms->ofdm_symbol_size;
slot_offset = (tti*2)%20;
// printf("tti %d : offset %d (slot %d)\n",tti,tti_offset,slot_offset);
//Generate Pilots
//antenna port 0 symbol 0 slot 0
lte_dl_cell_spec(eNB,&txdataF[0][tti_offset],
amp,
slot_offset,
0,
0);
// printf("tti %d : second_pilot offset %d \n",tti,tti_offset+(second_pilot*samples_per_symbol));
//antenna port 0 symbol 3/4 slot 0
lte_dl_cell_spec(eNB,&txdataF[0][tti_offset+(second_pilot*samples_per_symbol)],
amp,
slot_offset,
1,
0);
// printf("tti %d : third_pilot offset %d \n",tti,tti_offset+((Nsymb>>1)*samples_per_symbol));
//antenna port 0 symbol 0 slot 1
lte_dl_cell_spec(eNB,&txdataF[0][tti_offset+((Nsymb>>1)*samples_per_symbol)],
amp,
1+slot_offset,
0,
0);
// printf("tti %d : third_pilot offset %d \n",tti,tti_offset+(((Nsymb>>1)+second_pilot)*samples_per_symbol));
//antenna port 0 symbol 3/4 slot 1
lte_dl_cell_spec(eNB,&txdataF[0][tti_offset+(((Nsymb>>1)+second_pilot)*samples_per_symbol)],
amp,
1+slot_offset,
1,
0);
if (frame_parms->nb_antenna_ports_eNB > 1) {
// antenna port 1 symbol 0 slot 0
lte_dl_cell_spec(eNB,&txdataF[1][tti_offset],
amp,
slot_offset,
0,
1);
// antenna port 1 symbol 3 slot 0
lte_dl_cell_spec(eNB,&txdataF[1][tti_offset+(second_pilot*samples_per_symbol)],
amp,
slot_offset,
1,
1);
//antenna port 1 symbol 0 slot 1
lte_dl_cell_spec(eNB,&txdataF[1][tti_offset+(Nsymb>>1)*samples_per_symbol],
amp,
1+slot_offset,
0,
1);
// antenna port 1 symbol 3 slot 1
lte_dl_cell_spec(eNB,&txdataF[1][tti_offset+(((Nsymb>>1)+second_pilot)*samples_per_symbol)],
amp,
1+slot_offset,
1,
1);
}
}
