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Blind Beamforming for Noncircular Signals
Xu Yougen * #,Liu Zhiwen
Beijing Institute of Technology
*Correspondence author
#Submitted by
Subject:
Funding: 国家自然科学基金（No.60602037）
Opened online: 5 November 2008
Accepted by: none
Citation: Xu Yougen,Liu Zhiwen .Blind Beamforming for Noncircular Signals[OL]. [ 5 November 2008] http://en.paper.edu.cn/en_releasepaper/content/25453
 
 
Blind beamforming for extracting noncircular signals without a prior knowledge on the desired steering vector is considered in this paper. Three second-order statistic based blind schemes, termed as subspace decomposition, self-reference, and extraction power maximization methods, respectively, are proposed to extract one desired noncircular signal from a number of statistically independent circular interferences in the presence of circular Gaussian noise with arbitrary and unknown correlation structure. Two joint second- and fourth-order cumulant based methods are also developed for the case of multiple noncircular interferences. One is ESPRIT (estimation of signal parameters via rotational invariance techniques) type method. The other represents a real-valued extension of the WL-MVDR (widely linear minimum variance distortionless response). Numerical examples are shown to illustrate the performance of the proposed methods. The latest version of this online-only showing has also been submitted to IET Signal Processing.
Keywords:Array signal processing;adaptive arrays;noncircular signals;blind beamforming
 
 
 

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