Radiowave propagation analysis and measurements for wide area radio networks planning and optimization

摘要

In the paper influence of propagation modelling on the networks plans, international frequency coordination and operators contracts obligations are discussed. Basis of propagation modelling used for wide area radio networks planning and optimization as well as activities performed in this area within NIT radio spectrum research group is presented. Background of the models, propagation tools characterizations and some networks planning effects are presented. Results of propagation measurements campaign performed in Poland and they incorporation into the models are described. Limitation of some actual popular propagation models used with very detailed (e.g. 1x1m) digital elevation data maps and validation of the propagation models in such conditions are presented. Examples of practical networks plans and their dependence on propagation models developed for different commercial operators were also discussed.