Comparison of predictions from a ray tracing microcellular model with narrowband measurements

Abstract

In this paper predictions from a 3-D 'image-based' ray tracing model for microcellular environments are compared with three sets of narrowband measurements performed in a typical urban area. The comparisons illustrate that good agreement can be obtained, with RMS errors less than 3.7 dB, even for deep shadow areas. In order to analyse the inherent discrepancies that result from the limited averaging of the measurements along the route, predictions were also obtained by producing slow fading envelopes similar to those measured.