Modeling spatial aspects of mobile channel in uniformly distributed scatterers

Abstract

It is essential to have deep understanding of the mobile radio channel in particular for radio communication modeling and advanced technology system design. In his paper we employ the recently proposed Eccentro-Scattering physical channel model to derive the probability density functions (pdf) of Angle of Arrival (AOA) of the multipaths at Base Station (BS) from uniformly distributed scatterers for picocell, microcell, and macrocell environments. The Eccentro-Scattering model is easily employed to model any cellular environment with appropriate choice of few model parameters. This provides a unified approach to model all cellular environments that remained absent, so far. The derived formulas for the pdf of AOA of the multipaths at BS can be used further in performance assessment for smart antennas. uniform distribution and the Gaussian distribution. In uniformly distributed scattering region, scatterers are assumed to have constant density throughout the scattering area, while in Gaussian distributed scatterers, the majority of scattering points are situated close to MS and the density of scattering points decreases as the distance from MS increases. Assuming scatterers to be uniformly distributed simplifies the analysis and manipulation. These models are very specific to the corresponding environments, therefore, none of them can be considered as a general model that can be used to model all types of cellular environments. In (4), an elliptical model was proposed which could be altered to be used as a circular one, as well, with change in eccentricity of the ellipse in uniformly distributed scattering environment. The model was suitable for macrocell and quasi-macrocell