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Extend dlsim to support 2 layers for MIMO in AWGN channel

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This commit is contained in:
sfn
2021-04-22 19:07:07 +02:00
committed by Thomas Schlichter
parent f1e88d1f8d
commit 8530989d41
1 changed files with 8 additions and 3 deletions
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openair1/SIMULATION/NR_PHY/dlsim.c
+8 -3
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@@ -1080,6 +1080,11 @@ int main(int argc, char **argv)
frame_length_complex_samples,
0);
double H_awgn_mimo[4][4] ={{1.0, 0.5, 0.25, 0.125},//rx 0
{0.5, 1.0, 0.5, 0.25}, //rx 1
{0.25, 0.5, 1.0, 0.5}, //rx 2
{0.125, 0.25, 0.5, 1.0}};//rx 3
for (i=frame_parms->get_samples_slot_timestamp(slot,frame_parms,0);
i<frame_parms->get_samples_slot_timestamp(slot+1,frame_parms,0);
i++) {
@@ -1090,9 +1095,9 @@ int main(int argc, char **argv)
// sum up signals from different Tx antennas
r_re[aa_rx][i] = 0;
r_im[aa_rx][i] = 0;
for (aa=0; aa<n_tx; aa++) {
r_re[aa_rx][i] += s_re[aa][i];
r_im[aa_rx][i] += s_im[aa][i];
for (aa=0; aa<n_tx; aa++) {
r_re[aa_rx][i] += s_re[aa][i]*H_awgn_mimo[aa_rx][aa];
r_im[aa_rx][i] += s_im[aa][i]*H_awgn_mimo[aa_rx][aa];
}
}
// Add Gaussian noise