maki/openairinterface5g
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

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

Browse Source
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
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);
}
}