Theoretical prediction of radio channel statistics

Because communication systems operate at many locations over a wide range of building environments, the description of the parameters are necessarily statistical in nature. This view of the channel is complementary with the ray description of propagation, which is appropriate at frequencies in the UHF band and above. The results obtained from ray tracing need only be processed to achieve the manifestation appropriate to the communication system. Statistical variations of the channel parameters may be obtained from Monte Carlo simulations for ray results at many receiver locations.