SNR (dB)

−14

−12

−10

−9

−8

−7

−6

${\xi }_1$

−0.033

−0.104

−0.098

−0.124

−0.1016

−0.0804

−0.1286

${\sigma }_1$

0.439

0.528

0.557

0.627

0.647

0.663

0.718

${\mu }_1$

5.76

6.326

7.126

7.673

8.19

8.839

9.533