한국정보통신학회:학술대회논문집 (Proceedings of the Korean Institute of Information and Commucation Sciences Conference)
- 한국해양정보통신학회 2002년도 춘계종합학술대회
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- Pages.518-522
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- 2002
A Fuzzy Variable Step Size LMS Algorithm for Adaptive Antennas in CDMA Systems
- Su, Pham-Van (Information and Communications University(ICU)) ;
- Tuan, Le-Minh (Information and Communications University(ICU)) ;
- Kim, Jewoo (TeleCIS, Inc.) ;
- Giwan Yoon (Information and Communications University(ICU))
- 발행 : 2002.05.01
초록
This paper proposes a new application of Fuzzy logic to Variable Step Size Least Mean Square (VS-LMS) adaptive beamforming algorithm in CDMA systems. The proposed algorithm adjusts the step size of the Least Mean Square (LMS) by using the application of Fuzzy logic in which the increase or decrease of step size depends on the fuzzy inference results of the Mean Square Error (MSE). Computer simulation results show that the proposed algorithm has a better capacity of tracking compared with the conventional LMS algorithms and other variable step size LMS algorithms.