Comparison between two original methods including scattering in 3D channel simulations

Two original methods to characterize the channel behavior in indoor environments composed of rough surfaces are presented and compared between themselves. They are based on algorithms developed for the image rendering field using Monte-Carlo methods to simulate the scattering phenomenon from rough surfaces. A previous study has shown which statistical parameters of real rough surfaces such as wall roughcasts have to be considered in order to have the more realistic scattering simulation as possible. Firstly, this paper presents in details the two studied methods. Secondly, we compare their performance and accuracy by simulating the radio channel for different rough indoor environments at 60 GHz