A fast adaptive beamforming algorithm based on a simple DOA estimation method

Authors:
Ning Xie;Hui Wang
Affiliations:
College of Information Engineering, Shenzhen University, Shenzhen 518060, China/ State Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, Be ...;College of Information Engineering, Shenzhen University, Shenzhen 518060, China
Venue:
International Journal of Wireless and Mobile Computing
Year:
2012

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Abstract

This paper presents a fast adaptive beamforming algorithm for CDMA wireless communications. The proposed algorithm is based on an array pattern synthesis technique and a simple Direction of Arrival (DOA) estimation method. The former is to minimise the weighted squared errors between the achieved pattern and a reference pattern. The latter is to estimate DOA roughly with simplicity. Although there are some tiny errors during DOA estimation, the proposed algorithm provides a well-satisfied SINR performance as well as a fast convergence rate compared with the conventional beamforming algorithms with a low complexity. Simulation results are presented in various signal environments to show the superior performance of the proposed algorithm.