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apply nr rotation only on used PRBs instead of complete OFDM symbol

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This commit is contained in:
Thomas Schlichter
2022-08-25 11:05:48 +02:00
parent 21ea2f2136
commit 3c17573f34
8 changed files with 67 additions and 44 deletions
Download Patch File Download Diff File Expand all files Collapse all files
executables/nr-gnb.c
+1 -2
View File
@@ -221,8 +221,7 @@ void rx_func(void *param) {
gNB->common_vars.rxdataF[aa],
slot_rx,
0,
gNB->frame_parms.Ncp==EXTENDED?12:14,
gNB->frame_parms.ofdm_symbol_size);
gNB->frame_parms.Ncp==EXTENDED?12:14);
}
phy_procedures_gNB_uespec_RX(gNB, frame_rx, slot_rx);
}
openair1/PHY/MODULATION/nr_modulation.h
+2 -4
View File
@@ -112,8 +112,7 @@ void apply_nr_rotation(NR_DL_FRAME_PARMS *fp,
int16_t* txdata,
int slot,
int first_symbol,
int nsymb,
int length);
int nsymb);
void init_symbol_rotation(NR_DL_FRAME_PARMS *fp);
@@ -123,8 +122,7 @@ void apply_nr_rotation_ul(NR_DL_FRAME_PARMS *frame_parms,
int32_t *rxdataF,
int slot,
int first_symbol,
int nsymb,
int length);
int nsymb);
/*! \brief Perform NR precoding. TS 38.211 V15.4.0 subclause 6.3.1.5
@param[in] datatx_F_precoding, Pointer to n_layers*re data array
openair1/PHY/MODULATION/ofdm_mod.c
+12 -8
View File
@@ -341,29 +341,33 @@ void do_OFDM_mod(int32_t **txdataF, int32_t **txdata, uint32_t frame,uint16_t ne
}
void apply_nr_rotation(NR_DL_FRAME_PARMS *fp,
int16_t* trxdata,
int16_t* txdataF,
int slot,
int first_symbol,
int nsymb,
int length) {
int nsymb)
{
int symb_offset = (slot%fp->slots_per_subframe)*fp->symbols_per_slot;
c16_t *symbol_rotation = fp->symbol_rotation[0];
for (int sidx=0;sidx<nsymb;sidx++) {
LOG_D(PHY,"Rotating symbol %d, slot %d, symbol_subframe_index %d, length %d (%d,%d)\n",
LOG_D(PHY,"Rotating symbol %d, slot %d, symbol_subframe_index %d (%d,%d)\n",
first_symbol + sidx,
slot,
sidx + first_symbol + symb_offset,
length,
symbol_rotation[sidx + first_symbol + symb_offset].r,
symbol_rotation[sidx + first_symbol + symb_offset].i);
rotate_cpx_vector(((c16_t*) trxdata) + sidx * length,
rotate_cpx_vector(((c16_t*) txdataF) + sidx * fp->ofdm_symbol_size,
symbol_rotation + sidx + first_symbol + symb_offset,
((c16_t*) trxdata) + sidx * length,
length,
((c16_t*) txdataF) + sidx * fp->ofdm_symbol_size,
fp->N_RB_DL * 6,
15);
rotate_cpx_vector(((c16_t*) txdataF) + sidx * fp->ofdm_symbol_size + fp->first_carrier_offset,
symbol_rotation + sidx + first_symbol + symb_offset,
((c16_t*) txdataF) + sidx * fp->ofdm_symbol_size + fp->first_carrier_offset,
fp->N_RB_DL * 6,
15);
}
}
openair1/PHY/MODULATION/slot_fep_nr.c
+42 -22
View File
@@ -108,19 +108,30 @@ int nr_slot_fep(PHY_VARS_NR_UE *ue,
#endif
rotate_cpx_vector((c16_t *)&common_vars->common_vars_rx_data_per_thread[proc->thread_id].rxdataF[aa][frame_parms->ofdm_symbol_size*symbol],
&rot2,
(c16_t *)&common_vars->common_vars_rx_data_per_thread[proc->thread_id].rxdataF[aa][frame_parms->ofdm_symbol_size*symbol],
frame_parms->ofdm_symbol_size,
15);
&rot2,
(c16_t *)&common_vars->common_vars_rx_data_per_thread[proc->thread_id].rxdataF[aa][frame_parms->ofdm_symbol_size*symbol],
frame_parms->N_RB_DL * 6,
15);
rotate_cpx_vector((c16_t *)&common_vars->common_vars_rx_data_per_thread[proc->thread_id].rxdataF[aa][frame_parms->ofdm_symbol_size*symbol + frame_parms->first_carrier_offset],
&rot2,
(c16_t *)&common_vars->common_vars_rx_data_per_thread[proc->thread_id].rxdataF[aa][frame_parms->ofdm_symbol_size*symbol + frame_parms->first_carrier_offset],
frame_parms->N_RB_DL * 6,
15);
c16_t *shift_rot = frame_parms->timeshift_symbol_rotation;
multadd_cpx_vector((int16_t *)&common_vars->common_vars_rx_data_per_thread[proc->thread_id].rxdataF[aa][frame_parms->ofdm_symbol_size*symbol],
(int16_t *)shift_rot,
(int16_t *)&common_vars->common_vars_rx_data_per_thread[proc->thread_id].rxdataF[aa][frame_parms->ofdm_symbol_size*symbol],
1,
frame_parms->ofdm_symbol_size,
15);
(int16_t *)shift_rot,
(int16_t *)&common_vars->common_vars_rx_data_per_thread[proc->thread_id].rxdataF[aa][frame_parms->ofdm_symbol_size*symbol],
1,
frame_parms->N_RB_DL * 6,
15);
multadd_cpx_vector((int16_t *)&common_vars->common_vars_rx_data_per_thread[proc->thread_id].rxdataF[aa][frame_parms->ofdm_symbol_size*symbol + frame_parms->first_carrier_offset],
(int16_t *)(shift_rot + frame_parms->first_carrier_offset),
(int16_t *)&common_vars->common_vars_rx_data_per_thread[proc->thread_id].rxdataF[aa][frame_parms->ofdm_symbol_size*symbol + frame_parms->first_carrier_offset],
1,
frame_parms->N_RB_DL * 6,
15);
}
#ifdef DEBUG_FEP
@@ -301,10 +312,8 @@ void apply_nr_rotation_ul(NR_DL_FRAME_PARMS *frame_parms,
int32_t *rxdataF,
int slot,
int first_symbol,
int nsymb,
int length) {
int nsymb)
{
int symb_offset = (slot%frame_parms->slots_per_subframe)*frame_parms->symbols_per_slot;
int soffset = (slot&3)*frame_parms->symbols_per_slot*frame_parms->ofdm_symbol_size;
@@ -314,18 +323,29 @@ void apply_nr_rotation_ul(NR_DL_FRAME_PARMS *frame_parms,
rot2.i=-rot2.i;
LOG_D(PHY,"slot %d, symb_offset %d rotating by %d.%d\n",slot,symb_offset,rot2.r,rot2.i);
rotate_cpx_vector((c16_t *)&rxdataF[soffset+(frame_parms->ofdm_symbol_size*symbol)],
&rot2,
(c16_t *)&rxdataF[soffset+(frame_parms->ofdm_symbol_size*symbol)],
length,
15);
&rot2,
(c16_t *)&rxdataF[soffset+(frame_parms->ofdm_symbol_size*symbol)],
frame_parms->N_RB_UL * 6,
15);
rotate_cpx_vector((c16_t *)&rxdataF[soffset+(frame_parms->ofdm_symbol_size*symbol)+frame_parms->first_carrier_offset],
&rot2,
(c16_t *)&rxdataF[soffset+(frame_parms->ofdm_symbol_size*symbol)+frame_parms->first_carrier_offset],
frame_parms->N_RB_UL * 6,
15);
c16_t *shift_rot = frame_parms->timeshift_symbol_rotation;
multadd_cpx_vector((int16_t *)&rxdataF[soffset+(frame_parms->ofdm_symbol_size*symbol)],
(int16_t *)shift_rot,
(int16_t *)&rxdataF[soffset+(frame_parms->ofdm_symbol_size*symbol)],
1,
length,
15);
(int16_t *)shift_rot,
(int16_t *)&rxdataF[soffset+(frame_parms->ofdm_symbol_size*symbol)],
1,
frame_parms->N_RB_UL * 6,
15);
multadd_cpx_vector((int16_t *)&rxdataF[soffset+(frame_parms->ofdm_symbol_size*symbol)+frame_parms->first_carrier_offset],
(int16_t *)(shift_rot + frame_parms->first_carrier_offset),
(int16_t *)&rxdataF[soffset+(frame_parms->ofdm_symbol_size*symbol)+frame_parms->first_carrier_offset],
1,
frame_parms->N_RB_UL * 6,
15);
}
}
openair1/PHY/NR_UE_TRANSPORT/nr_ulsch_ue.c
+6 -1
View File
@@ -606,7 +606,12 @@ uint8_t nr_ue_pusch_common_procedures(PHY_VARS_NR_UE *UE,
rotate_cpx_vector((c16_t *)&txdataF[ap][frame_parms->ofdm_symbol_size * s],
&rot,
(c16_t *)&txdataF[ap][frame_parms->ofdm_symbol_size * s],
frame_parms->ofdm_symbol_size,
frame_parms->N_RB_UL * 6,
15);
rotate_cpx_vector((c16_t *)&txdataF[ap][frame_parms->ofdm_symbol_size * s + frame_parms->first_carrier_offset],
&rot,
(c16_t *)&txdataF[ap][frame_parms->ofdm_symbol_size * s + frame_parms->first_carrier_offset],
frame_parms->N_RB_UL * 6,
15);
}
}
openair1/SCHED_NR/phy_procedures_nr_gNB.c
+1 -1
View File
@@ -181,7 +181,7 @@ void phy_procedures_gNB_TX(processingData_L1tx_t *msgTx,
//apply the OFDM symbol rotation here
for (aa=0; aa<cfg->carrier_config.num_tx_ant.value; aa++) {
apply_nr_rotation(fp,(int16_t*) &gNB->common_vars.txdataF[aa][txdataF_offset],slot,0,fp->Ncp==EXTENDED?12:14,fp->ofdm_symbol_size);
apply_nr_rotation(fp,(int16_t*) &gNB->common_vars.txdataF[aa][txdataF_offset],slot,0,fp->Ncp==EXTENDED?12:14);
}
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_gNB_TX+offset,0);
openair1/SIMULATION/NR_PHY/pbchsim.c
+2 -4
View File
@@ -610,8 +610,7 @@ int main(int argc, char **argv)
(int16_t*)gNB->common_vars.txdataF[aa],
slot,
0,
12,
frame_parms->ofdm_symbol_size);
12);
PHY_ofdm_mod(gNB->common_vars.txdataF[aa],
&txdata[aa][frame_parms->get_samples_slot_timestamp(slot,frame_parms,0)],
@@ -624,8 +623,7 @@ int main(int argc, char **argv)
(int16_t*)gNB->common_vars.txdataF[aa],
slot,
0,
14,
frame_parms->ofdm_symbol_size);
14);
/*nr_normal_prefix_mod(gNB->common_vars.txdataF[aa],
&txdata[aa][frame_parms->get_samples_slot_timestamp(slot,frame_parms,0)],
openair1/SIMULATION/NR_PHY/ulsim.c
+1 -2
View File
@@ -1377,8 +1377,7 @@ int main(int argc, char **argv)
gNB->common_vars.rxdataF[aa],
slot,
0,
gNB->frame_parms.Ncp == EXTENDED ? 12 : 14,
gNB->frame_parms.ofdm_symbol_size);
gNB->frame_parms.Ncp == EXTENDED ? 12 : 14);
}
ul_proc_error = phy_procedures_gNB_uespec_RX(gNB, frame, slot);