Abstract
This paper investigates the effect of motion on the spatial characteristics of cellular mobile channel. We discuss three mobile motion scenarios that are responsible for the variation of the probability density function (pdf) of Angle of Arrival (AoA) of the multipaths at Base Station (BS). We consider evolutionary channel model for the pdf of AoA based on the updated relative positions of BS and Mobile Station (MS). The derived formulas, in closed form, for the pdf of AoA can easily be. used to simulate the time variability of angular spread as a result of MS motion. Theoretical results have been presented for both picocell/microcell and macrocell environments. The effect of increasing distance on the angular spread is elaborated in details.