Influence of databases accuracy on ray-tracing-based-prediction in urban microcells

The databases required for ray-tracing-based-prediction in urban microcellular environments include those for the building layout, the electrical characteristics of the buildings, and for the base station (locations, antennas, power, etc.). The effects of inaccuracies in these databases are presented and analyzed by comparing the computed results to measurements. The results presented show that acceptable predictions can be computed but care must be taken (a) to use an accurate vector database, (b) to precisely place the base station location with respect to the building corners, and (c) to adapt the reflection coefficient for the given area