Adaptive nulling array antenna using a new variable step size LMS-type algorithm

A adaptive array antenna system consisting of antenna array and adaptive processor can easily control directivity patterns, by enhance the desired signal and suppress interference signal. The classical LMS has a contradiction that fast convergence rate and low steady state error. In order to overcome this contradiction, this paper presents a new algorithm which uses gradient vector features to achieve iterative step. The software simulation results verify the effectiveness of the algorithm.