Designing adaptive antenna uplink weighting vector to achieve optimization of radiation pattern

Abstract

In this paper, the optimal radiation pattern of an adaptive linear array is derived by phase-amplitude perturbations using a genetic algorithm. An antenna array is often used as an adaptive antenna. An optimal radiation pattern design for an adaptive antenna system is not only to suppress interference by placing a null in the direction of the interfering source but also to derive the maximum power pattern in the direction of the desired signal. The signal to interference ratio (SIR) can be maximized. The genetic algorithm is a new methodology, which can handle the adaptive radiation pattern of antenna array. In this paper, an optimal radiation pattern of linear array is derived by phase-amplitude perturbations using a genetic algorithm. Genetic algorithms are computed for this problem. Then, the optimal solution can be derived. Several simulation results are also presented in this paper.