Parameter | Our scheme | [32] | [36] | [37] |
---|---|---|---|---|
Eve capacity | \(R_e\approx 0\) | \(R_{e1}/Nt+R_{e1}/N\) | \(R_e\) | – |
NF chain | 1 | 1 | \(N_t\) | \(N_t/2\) |
\(\eta _{\textrm{SE}}\) | \(\log _2NtM/W\) | \(\log _2NtM/W\) | \(\log _2NtM/W\) | \(Nt\log _2M/2W\) |
\(\Omega _{\textrm{EE}}\) | \(\log _2NtM/\omega W\) | \(\log _2NtM/\omega W\) | \(\log _2NtM/\omega WN_F\) | \(Na\log _2M/2\omega WN_F\) |