文章基本信息

标题：Design and Simulation of a Novel Multistage Beamforming Algorithm for Mobile Communication
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作者：MOHAMMED MUJAMMIL AHMED ; RANJIT KUMAR
期刊名称：International Journal of Innovative Research in Computer and Communication Engineering
印刷版ISSN：2320-9798
电子版ISSN：2320-9801
出版年度：2013
卷号：1
期号：3
出版社：S&S Publications
摘要：Adaptive arrays are antenna arrays with smart signal processing techniques, which are used in manywireless communication applications. Many signal processing techniques have been used to steer the array pattern inlook direction by adjusting the weights of the signal without user intervention. Weights of signal processor can beautomatically adjusted by simple adaptive beamforming techniques. One of the most commonly used beamformingtechnique is least mean square (LMS) algorithm. LMS algorithm has low computational complexity. However, itsconvergence rate is slow. In this paper a novel implementation scheme for LMS algorithm is simulated, whichdecreases the mean square error (MSE) and increases convergence speed. This proposed algorithm is called four stageLMS algorithm. Four stage LMS algorithm for beamforming is simulated using MATLAB and compared with existingLMS and dual stage LMS algorithm. From simulation results we infer that the convergence of proposed algorithm isbetter compared to LMS and dual stage LMS algorithms.
关键词：Adaptive arrays; Beamforming; LMS algorithm; Convergence