Second order nonstationary source separation
SCIE
SCOPUS
- Title
- Second order nonstationary source separation
- Authors
- Choi, SJ; Cichocki, A; Belouchrani, A
- Date Issued
- 2002-08
- Publisher
- KLUWER ACADEMIC PUBL
- Abstract
- This paper addresses a method of blind source separation that jointly exploits the nonstationarity and temporal structure of sources. The method needs only multiple time-delayed correlation matrices of the observation data, each of which is evaluated at different time-windowed data frame, to estimate the demixing matrix. The method is insensitive to the temporally white noise since it is based on only time-delayed correlation matrices (with non-zero time-lags) and is applicable to the case of either nonstationary sources or temporally correlated sources. We also discuss the extension of some existing methods with the overview of second-order blind source separation methods. Extensive numerical experiments confirm the validity and high performance of the proposed method.
- Keywords
- blind source separation; joint approximate diagonalization; noisy mixtures; nonstationarity; simultaneous diagonalization; temporal correlations; BLIND SEPARATION; SIGNALS
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/18990
- DOI
- 10.1023/A:1016319502849
- ISSN
- 0922-5773
- Article Type
- Article
- Citation
- JOURNAL OF VLSI SIGNAL PROCESSING SYSTEMS FOR SIGNAL IMAGE AND VIDEO TECHNOLOGY, vol. 32, no. 1-2, page. 93 - 104, 2002-08
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