NDLI: A Deflation Procedure for Subspace Decomposition

Content Provider	IEEE Xplore Digital Library
Author	Sameni, R. Jutten, C. Shamsollahi, M.B.
Copyright Year	1991
Abstract	A general deflation framework is described for the separation of a desired signal subspace of arbitrary dimensions from noisy multichannel observations. The method simultaneously uses single and multichannel priors to split the desired and undesired subspaces, even for coplanar (intersecting) subspaces. By appropriate use of signal priors, it can even extract signals from degenerate mixtures of signals and noise recorded from a few number of channels in low SNR scenarios, without the reduction of the data dimensions. As a case study, the performance of the proposed method is studied for the problem of extracting fetal cardiac signals from maternal abdominal recordings, over simulated and real data. A second case study deals with the degenerate problem of extracting diaphragmatic electromyogram from electrocardiograph artifacts. A provisional patent application based on this method has been filed.
Sponsorship	IEEE Signal Processing Society
Starting Page	2363
Ending Page	2374
Page Count	12
File Size	1068163
File Format	PDF
ISSN	1053587X
Volume Number	58
Issue Number	4
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-04-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Data mining Source separation Noise reduction Signal to noise ratio Signal processing algorithms Data models Laboratories Interference Abdomen Filtering subspace Deflation nonlinear filtering nonstationarity periodicity prior rank preservation Rayleigh quotient signal denoising
Content Type	Text
Resource Type	Article
Subject	Signal Processing Electrical and Electronic Engineering

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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