Research Article
Secrecy-Capacity-Optimization-Artificial-Noise in Large-Scale MIMO: Ergodic Lower Bound on Secrecy Capacity and Optimal Power Allocation
Table 4
Optimal
for different
and
.
| | Number of | Number of | Optimal |
| | 2 | 1 | 0.292 | | 2 | 2 | 0.313 | | 2 | 4 | 0.327 | | 2 | 8 | 0.339 | | 4 | 1 | 0.271 | | 4 | 2 | 0.282 | | 4 | 4 | 0.312 | | 4 | 8 | 0.327 | | 8 | 1 | 0.255 | | 8 | 2 | 0.262 | | 8 | 4 | 0.272 | | 8 | 8 | 0.284 | | 16 | 1 | 0.232 | | 16 | 2 | 0.238 | | 16 | 4 | 0.252 | | 16 | 8 | 0.267 | | 32 | 1 | 0.207 | | 32 | 2 | 0.212 | | 32 | 4 | 0.232 | | 32 | 8 | 0.242 | | 64 | 1 | 0.185 | | 64 | 2 | 0.202 | | 64 | 4 | 0.231 | | 64 | 8 | 0.252 | | 128 | 1 | 0.171 | | 128 | 2 | 0.190 | | 128 | 4 | 0.201 | | 128 | 8 | 0.224 |
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