A spatio-temporal radio channel characterization with a 3D ray tracing propagation model in urban environment

We investigate the spatio-temporal characterization of a radio mobile propagation channel in urban environment. This characterization is based on a 3D ray tracing software developed in our laboratory and on Bello´s work. So, for the complex environment studied in the COST 231 project, we evaluate the dispersion and coherence properties of the radio channel and study the probability density functions (pdf) of the angle-of-arrival (AOA) in azimuth and elevation planes. We analyze the obtained results to show the difference existing between our approach and this stemming from statistical models of radio channel.