An automatic model selection scheme for propagation in macrocellular and microcellular environments

The purpose of this paper is to present a model selection procedure suitable for an open macrocellular and urban microcellular environment in the UHF range. A number of deterministic models (or algorithms) have been developed for propagation in an open terrain environment. We suggest how to choose one of these models for a path loss computation over a particular terrain profile. The choice is based on the geometry of the terrain (curvature and shadowing), the computational complexity of the model and its memory requirements. We illustrate the selection procedure using a set of models we have either developed ourselves or used frequently. Other deterministic methods can also be incorporated into the scheme. Results are presented and compared with measurements where appropriate. Finally, a model selection algorithm is suggested for an urban environment