Rank-deficient prewhitening with quotient SVD and ULV decompositions

Publication: Research - peer-reviewJournal article – Annual report year: 1998

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This paper deals with certain theoretical and numerical aspects of prewhitening, which is a technique frequently used in signal processing when dealing with signals degraded by colored noise. In particular, we demonstrate how to prewhiten a signal contaminated by an interfering noisy signal whose covariance matrix is rank deficient. The formulation of our technique is based on the quotient (or generalized) singular value decomposition, and we also show that a quotient-version of the ULV decomposition can be used to provide an efficient updatable implementation
Original languageEnglish
JournalBIT
Publication date1998
Volume38
Issue1
Pages34-43
ISSN0006-3835
StatePublished
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