Spatial domain modeling of microcellular systems operating in multipath Nakagami channels

In conventional channel models, the AoA´s at the BS, are assumed to be uniformly distributed. However, measurements in urban areas have shown non-uniform AoA distributions. In this paper, the spatial characterization of wideband urban mobile radio channels is investigated and the resulting and spatial correlations at the BS receiver are computed. A geometrically based modeling is used to spatially characterize both TU and BU environments. The clustered scatterers are assumed to have bivariate Gaussian densities. The AoA pdf´s are derived. The spatial correlations are computed for tooth environments and the effects of the channel parameters such as the scatterer´s variance, the BS-MS distance, the mean angle of arrival on these correlations are investigated.