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A NEW ADAPTIVE BEAM-FORMING ALGORITHM BASED ON GENERALIZED ON-OFF METHOD FOR SMART ANTENNA SYSTEM  

이정자 (한양대학교 전자통신전파공학과)
안성수 (한양대학교 전자통신전파공학과)
최승원 (한양대학교 전자전기컴퓨터공학부)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.28, no.10C, 2003 , pp. 984-994 More about this Journal
Abstract
This paper proposes a novel blind adaptive algorithm for computing the weight vector of an antenna array system. The new technique utilizes a Generalized On-Off algorithm to obtain the weight vector maximizing the SINR(Signal to Interference plus Noise Ratio) of the received signal. It is observed that the proposed algorithm generates a suboptimal weight vector with a linear computational load(O(6N+8)). From the various simulations, it is confirmed that, when the signal environment becomes adverse, e.g., low Processing Gain, and/or wide angular spread. the proposed algorithm outperforms the conventional one in terms of the communication capacity by about 3 times. Applying the proposed algorithm to satellite tracking systems as well as IS2000 1X mobile communication system, we have found that both communication capacity and communication quality are significantly improved.
Keywords
smart antenna; beamforming algorithm; signal processing;
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