Modified Walfisch Bertoni Model

This model is not proposed in any document or in any academic paper. It is only used in Wireless simulator program as a combination of flat edge model and Walfisch-Bertoni model. Walfisch Bertoni model is valid when number of buildings exceeds a value which causes settling field. The number of buildings adequate for settling of field is given by [1] as follow:

where, w is average width of the streets and definition of a is given in flat edge model.

When number of buildings exceeds n_s value Walfisch Bertoni model is applied in the program.

[1] Sounders, Simon.R., “ Antennas and Propagation for Wireless Communication Systems”,Wiley,New York,1999