Adaptive fuzzy beamformer to steering vector mismatch

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題名:	Adaptive fuzzy beamformer to steering vector mismatch
作者:	Hung, Jui-Chung;洪瑞鍾
貢獻者:	臺北市立教育大學資訊科學系
關鍵詞:	first-order Taylor series;adaptive beamformer;differential evolution algorithm;fuzzy systems
日期:	2012-11
上傳時間:	2017-07-24 11:27:34 (UTC+8)
摘要:	This paper proposed an efficient beamformer to deal with the signal steering vector mismatches. The empirical results show that the significant performance degradation occurs when the signal steering vector for the desired signal is not known exactly. Thus, we design adaptive fuzzy beamformer, which adopt the method of fuzzy systems to modify the value of signal steering vector by first-order Taylor expansion. In this situation, the beamformer design problem becomes a complicated nonlinear estimation problem. In this study, a design method based on differential evolution (DE) algorithm is proposed to treat the adaptive fuzzy beamformer design problem. Finally, the simulation confirm that the proposed scheme performance is significantly improved and preferable robustness if the effect of point error of desired signal is considered along with the use of expert knowledge enabled by the beamformer.
關聯:	2012 IEEE International Symposium on Intelligent Signal Processing and Communication Systems
顯示於類別:	[資訊科學系] 會議論文

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