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NR: fix init_symbol_rotation() for UL

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This commit is contained in:
Thomas Schlichter
2021-03-08 16:23:20 +01:00
parent 2411743f44
commit 681c03667d
1 changed files with 6 additions and 5 deletions
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openair1/PHY/MODULATION/nr_modulation.c
+6 -5
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@@ -602,17 +602,17 @@ void init_symbol_rotation(NR_DL_FRAME_PARMS *fp) {
const double Nu=2048*64*(1/(float)(1<<fp->numerology_index));
const double Ncp0=16*64 + (144*64*(1/(float)(1<<fp->numerology_index)));
const double Ncp1=(144*64*(1/(float)(1<<fp->numerology_index)));
double tl=0,poff,exp_re,exp_im;
double Ncp,Ncpm1=Ncp0;
for (uint8_t ll = 0; ll < 2; ll++){
double f0 = f[ll];
double Ncpm1 = Ncp0;
int16_t *symbol_rotation = fp->symbol_rotation[ll];
poff = 2 * M_PI * ((Ncp0 * Tc)) * f0;
exp_re = cos(poff);
exp_im = sin(-poff);
double tl = 0;
double poff = 2 * M_PI * ((Ncp0 * Tc)) * f0;
double exp_re = cos(poff);
double exp_im = sin(-poff);
symbol_rotation[0] = (int16_t)floor(exp_re * 32767);
symbol_rotation[1] = (int16_t)floor(exp_im * 32767);
LOG_I(PHY, "Doing symbol rotation calculation for gNB TX/RX, f0 %f Hz, Nsymb %d\n", f0, nsymb);
@@ -624,6 +624,7 @@ void init_symbol_rotation(NR_DL_FRAME_PARMS *fp) {
for (int l = 1; l < nsymb; l++) {
double Ncp;
if (l == (7 * (1 << fp->numerology_index))) {
Ncp = Ncp0;
} else {