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The main objective of this paper is to introduce a novel approach to empirical modelling for the prediction of propagation pathloss, in wireless radio communication systems. The method, here referred to as the ‘Quasi-Moment-Method’ (QMM), has its basis in the solution of the classical least square approximation problem, in a manner similar to the method of moments, for the solution of electromagnetic field problems. By using existing basic models to prescribe ’basis’ functions, associated unknown coefficients are determined through the solution of simple matrix equations. A comparative analysis with some published measurement data revealed that the QMM consistently outperformed models developed with other approaches. Typically, the ECC-33 models, modified using the QMM, for an outdoor case, recorded a root-mean-square-error value of 0.33 dB, as against 20.083 dB due to a corresponding published optimised model.

A Quasi-Moment-Method empirical modelling for pathloss prediction