Design of non-uniform linear phased arrays using genetic algorithms to provide maximum interference reduction capability in a wireless communication system

Abstract

This paper deals with the interference reduction capability of non-uniform antenna arrays with linear geometry at the base station of a cellular system. The well-known method of genetic algorithms is used to determine the optimal non-uniform array geometry between antenna elements in order to provide maximum interference reduction. The performance criterion for interference reduction employed in this paper is the interference suppression coefficient. Simulation results using different numbers of antenna elements for nonuniform linear arrays are provided. Simulation results show that the optimization of the array provides better interference reduction capability with respect to the uniform separation case.