Table 2 Comparison results for fixed values of SNR=10 db, R _d =3, α=4 and m=4

Spectral efficiency bit/s/Hz

2.6

3.63

4.11

Energy efficiency bit/J

0.22

0.24

0.46

Spatial spectral efficiency bit/s/Hz/Km²

0.32

1.35

2.76

Spatial energy efficiency bit/J/Km²

0.074

0.15

0.29

Coverage probability| γ _t =10 dB

0.420

0.862

0.945