Complex Noisy Independent Component Analysis by Negentropy Maximization

Guobing QIAN  Liping LI  Hongshu LIAO  

Publication
IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E97-A   No.12   pp.2641-2644
Publication Date: 2014/12/01
Online ISSN: 1745-1337
DOI: 10.1587/transfun.E97.A.2641
Type of Manuscript: LETTER
Category: Noise and Vibration
Keyword: 
noise,  independent component analysis (ICA),  complex maximization of non-Gaussianity (CMN),  

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Summary: 
The maximization of non-Gaussianity is an effective approach to achieve the complex independent component analysis (ICA) problem. However, the traditional complex maximization of non-Gaussianity (CMN) algorithm does not consider the influence of noise. In this letter, a modification of the fixed-point algorithm is proposed for more practical occasions of the complex noisy ICA model. Simulations show that the proposed method demonstrates significantly improved performance over the traditional CMN algorithm in the noisy ICA model when the sample size is sufficient.