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

Put in ulsim a channel matrix H_awgn_mimo different from identity (it is a matrix equal to matrix used in dlsim)

Browse Source
This commit is contained in:
Roberto Louro Magueta
2022-04-29 01:22:33 +01:00
parent c128a5d9e2
commit e236794310
1 changed files with 8 additions and 12 deletions
Download Patch File Download Diff File Expand all files Collapse all files
openair1/SIMULATION/NR_PHY/ulsim.c
+8 -12
View File
@@ -1260,23 +1260,19 @@ int main(int argc, char **argv)
for (i=0; i<slot_length; i++) {
for (ap=0; ap<frame_parms->nb_antennas_rx; ap++) {
if (channel_model == AWGN) {
double H_awgn[4][4] ={{1.0, 0.0, 0.0, 0.0},//rx 0
{0.0, 1.0, 0.0, 0.0}, //rx 1
{0.0, 0.0, 1.0, 0.0}, //rx 2
{0.0, 0.0, 0.0, 1.0}};//rx 3
#if 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
#endif
double H_awgn_mimo[4][4] ={{1.0, 0.2, 0.1, 0.05}, //rx 0
{0.2, 1.0, 0.2, 0.1}, //rx 1
{0.1, 0.2, 1.0, 0.2}, //rx 2
{0.05, 0.1, 0.2, 1.0}}; //rx 3
// sum up signals from different Tx antennas
r_re[ap][i] = 0;
r_im[ap][i] = 0;
for (int aa=0; aa<n_tx; aa++) {
r_re[ap][i] += s_re[aa][i]*H_awgn[ap][aa];
r_im[ap][i] += s_im[aa][i]*H_awgn[ap][aa];
r_re[ap][i] += s_re[aa][i]*H_awgn_mimo[ap][aa];
r_im[ap][i] += s_im[aa][i]*H_awgn_mimo[ap][aa];
}
}