From: Multiuser diversity in correlated Rayleigh-fading channels
β
N
2
3
4
0
0.491
0.587
0.640
0.1
0.490
0.586
0.639
0.5
0.466
0.560
0.611
0.9
0.401
0.476
0.521
1
0.374
0.432
0.469