Automatic frequency planning algorithm in a real land mobile radio system design

Abstract

A new sophisticated algorithm for fully automatic frequency planning in a real land mobile radio system is presented. Modern cellular radio systems typically employ several thousands of transceivers simultaneously. An appropriate assignment of frequencies to cells can, in such a case, significantly suppress the intra-system interference. However, the process of frequency planning is a very complex and difficult task due to the fact that a great number of sometimes mutually opposing requirements should be satisfied. In the proposed algorithm, the optimisation of a nonlinear, multivariate and multicriterion interference function is realised in such a way to provide a very good frequency planning solution in acceptable short time. During the real radio system design, the performance of the proposed algorithm has been verified, both by simulation and in practice.