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move symbol level ifft including beamforming into ofdm_mod.c

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This commit is contained in:
Xiwen JIANG
2016-03-21 16:53:35 +01:00
parent e196f5fcfb
commit 9fca33136d
2 changed files with 55 additions and 54 deletions
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openair1/PHY/MODULATION/ofdm_mod.c
+55
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@@ -276,4 +276,59 @@ void do_OFDM_mod(mod_sym_t **txdataF, int32_t **txdata, uint32_t frame,uint16_t
}
// OFDM modulation for each symbol
void do_OFDM_mod_l(LTE_eNB_COMMON *eNB_common_vars, int eNB_id, uint16_t next_slot, LTE_DL_FRAME_PARMS *frame_parms, uint8_t num_pdcch_symbols, unsigned char transmission_mode)
{
int aa, l, slot_offset, slot_offset_F;
mod_sym_t **txdataF = eNB_common_vars->txdataF[eNB_id];
mod_sym_t **txdataF_BF = eNB_common_vars->txdataF_BF[eNB_id];
int32_t **txdata = eNB_common_vars->txdata[eNB_id];
//slot_offset_F = (next_slot)*(frame_parms->ofdm_symbol_size)*((frame_parms->Ncp==1) ? 6 : 7);
slot_offset = (next_slot)*(frame_parms->samples_per_tti>>1);
// printf("Thread %d starting ... aa %d (%llu)\n",omp_get_thread_num(),aa,rdtsc());
for (l=0; l<frame_parms->symbols_per_tti>>1; l++) {
//printf("do_OFDM_mod_l, slot=%d, l=%d, NUMBER_OF_OFDM_CARRIERS=%d,OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES=%d\n",next_slot, l,NUMBER_OF_OFDM_CARRIERS,OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES);
if (l<num_pdcch_symbols && next_slot&1 == 0)
cell_spec_beamforming(txdataF,txdataF_BF,frame_parms,eNB_common_vars->cell_spec_bf_weights[eNB_id],next_slot,l);
else
if (transmission_mode<7)
cell_spec_beamforming(txdataF,txdataF_BF,frame_parms,eNB_common_vars->cell_spec_bf_weights[eNB_id],next_slot,l);
else
ue_spec_beamforming(txdataF,txdataF_BF,frame_parms,eNB_common_vars->ue_spec_bf_weights[eNB_id],next_slot,l);
for (aa=0; aa<frame_parms->nb_antennas_tx; aa++) {
if (frame_parms->Ncp == 1)
PHY_ofdm_mod(txdataF_BF[aa], // input
&txdata[aa][slot_offset+l*OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES], // output
frame_parms->ofdm_symbol_size,
1, // number of symbols
frame_parms->nb_prefix_samples, // number of prefix samples
CYCLIC_PREFIX);
else {
if (l==0) {
PHY_ofdm_mod(txdataF_BF[aa], // input
&txdata[aa][slot_offset], // output
frame_parms->ofdm_symbol_size,
1, // number of symbols
frame_parms->nb_prefix_samples0, // number of prefix samples
CYCLIC_PREFIX);
} else {
PHY_ofdm_mod(txdataF_BF[aa], // input
&txdata[aa][slot_offset+OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES0+(l-1)*OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES], // output
frame_parms->ofdm_symbol_size,
1, // number of symbols
frame_parms->nb_prefix_samples, // number of prefix samples
CYCLIC_PREFIX);
}
}
}
}
}
/** @} */