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
5.1
4.9
4.1
5.8
5
S = 0.3
4.3
5.3
6.9
5.4
S = 0.4
3.3
5.6
7.6
4.8
Pattern error
4.2
6.2