Analysis and ray-tracing modelling of co- and cross-polarization radio propagation in urban environment

The co- and cross-polarization behaviour of the urban propagation channel has been studied through both MIMO measurements and ray tracing (RT) simulation. A ray tracing model including diffuse scattering has been adopted, allowing the role of diffuse scattering to be highlighted through comparison between measurement and simulation. The high degree of cross-polarization power transfer observed in both measurement and simulation seems to be partly due to multipath propagation (and to diffuse scattering in particular), and partly due to the polarization behaviour of the antennas.