From: Outage probability of fixed-gain dual-hop relay selection channels with heterogeneous fading
Configuration
FHS
SHS
DHS
Nak-1
1.3
Nak-2
4
Nak-3
2
0.7
3.2
Nak-4
0.6
1.8
3.1
Nak-5
2.5
5
Nak-6
2.4
0.9
3.4