An accurate and efficient method to estimate the local fading statistics from ray-tracing

The knowledge of the mean level of the received signal in a multipath environment and its variations about the mean is fundamental when designing a wireless communications system. In this paper, a comparison between measurements and simulations carried out by the authors is presented in order to show that ray-tracing techniques make it possible to estimate with sufficient accuracy not only the signal mean level but also its variations about the mean. Furthermore, a new method, based on ray-tracing, is proposed to estimate the signal statistics in a local area starting from the signal information at one single point.