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One of the important factors for deterministic channel propagation simulator using 3D ray-tracing methods is the environment modeling. Sensitivity of results depends on its description accuracy. This paper concerns the influence of the environment description precision on MIMO channel characterization. Simulations have been performed in two unfurnished indoor environments. The first one is a floor,...
Classical theories such as the uniform theory of diffraction (UTD) use analytical expressions for diffraction coefficients. These methods are widely used in radio communications to predict the channel behaviour. Indeed, they are very fast and applicable as long as the objects which interact during the wave propagation are canonical (dihedral for example) and much greater than the wavelength. For more...
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...
The current wireless systems evolve towards multimedia applications demanding more and more high bit rate. Consequently, we observe an important rise in frequency. Then, it becomes necessary to study the influence of particular details of environment such as rough surfaces or small and complex scattering structures. Nowadays, ray tracing techniques, based on the geometrical optic (OG) and the uniform...
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