From: Accuracy of depolarization and delay spread predictions using advanced ray-based modeling in indoor scenarios
Lambertian
αr = 2
αr = 3
αr = 4
S Error
S = 0.2
0.29
0.3
0.295
S = 0.3
0.32
0.303
S = 0.4
0.31
Pattern error
0.293
0.307