Table 2 Simulation parameters
Parameters | Notation | Typical values |
|---|---|---|
Numbers of antennas | \({N_t}\) | 2 |
Variances of noise at user 1 | \(\sigma _1^2\) | − 60 dBm |
Variances of noise at user 2 | \(\sigma _2^2\) | − 60 dBm |
Variances of noise at eavesdropper | \(\sigma _{e}^2\) | − 60 dBm |
Distance between BS and user 2 | \({d_2}\) | 3 m |
Distance between BS and user 1 | \({d_1}\) | 5 m |
Distance between BS and eavesdropper | \({d_e}\) | 3 m |
Distance between user 2 and user 1 | \({d_{12}}\) | 2.5 m |
Path loss exponent of user 1 | \({\alpha _1}\) | 4 |
Path loss exponent of user 2 | \({\alpha _2}\) | 2 |
Path loss exponent of eavesdropper | \({\alpha _e}\) | 2 |
Path loss exponent between user 2 and user 1 | \({\alpha _{12}}\) | 2 |
Rician factor | K | 3 |
Channel distribution | \({\widetilde{\mathbf {h}}_1}\) | \(\mathcal {CN}(\mathbf {0},\mathbf {I})\) |
\({\mathbf {h}}_2^{{\text {NLOS}}}\) | \(\mathcal {CN}(\mathbf {0},\mathbf {I})\) | |
\({\mathbf {f}}^{{\text {NLOS}}}\) | \(\mathcal {CN}(\mathbf {0},\mathbf {I})\) | |
\(g_1^{{\text {NLOS}}}\) | \(\mathcal {CN}({0},\mathrm {I})\) |