The effect of diffraction on cross-polarized signal propagation in an indoor radio environment

This article reports the results of indoor polarization diversity propagation simulations made for a simple controlled environment in which a 900 MHz (CW) vertically polarized signal is transmitted from a fixed emitter to a mobile receiver. The receiver considered was a two branch polarization diversity system, which makes possible the application of polarization diversity in order to reduce the deep fades that affect the signal envelope. A channel model of an indoor environment, based on a ray tracing and on the uniform theory of diffraction, is used to describe the environment as a set of structures with electromagnetic properties, and results in a detailed description of the multipath channel experienced by a communication system