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Gradient On-Off Beamforming Algorithm Based On Eigen-Space Method For a Smart Antenna In IS-2000 1X Signal Environment  

이정자 (한양대학교 전자통신전파공학과)
이원철 (한양대학교 전자통신전파공학과)
최승원 (한양대학교 전자전기컴퓨터공학부)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.28, no.10C, 2003 , pp. 949-957 More about this Journal
Abstract
This paper presents a gradient ON-OFF algorithm of which the performance is very robust even when the angle spread increases in the mobile communication environments. The proposed method getting the diversity gain by utilizing the primary and secondary eigenvector, which corresponds to the largest and the second largest eigenvalue of the autocovariance matrix of the received signal vector, outperforms the method which just utilizes one eigenvector. By applying the proposed method to IS-2000 1X signal environments, it is observed that the proposed method shows excellent performance compared to a typical beamforming method using just one eigenvector, which considerably degrades the receiving performance as the angle spread increases.
Keywords
smart antenna; beamforming algorithm; signal processing;
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