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Blind signal separation using fixed overcomplete basis function dictionaries

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Original languageEnglish
Title of host publication2003 International Symposium on Circuits and Systems, 2003 (ISCAS '03)
Publisher or commissioning bodyInstitute of Electrical and Electronics Engineers (IEEE)
PagesIII-44 - III-47
Number of pages4
ISBN (Print)0780377613
StatePublished - May 2003
EventInternational Symposium on Circuits and Systems, 2003 - Bangkok, Thailand


ConferenceInternational Symposium on Circuits and Systems, 2003
Abbreviated titleISCAS '03
Period1/05/03 → …


A solution for achieving blind separation for underdetermined systems is to use an overcomplete basis function set that has the ability to span all possible inputs. Ideally, such a basis would be learned for each set of inputs but this is computationally expensive. A less processor intensive system is shown using a fixed dictionary of basis functions learned from existing sources and reduced using a correlation-based method. The relation between dictionary size and separation performance for underdetermined scenarios is examined and we demonstrate that a reduced dictionary can produce comparable results using less computational power.

Additional information

Rose publication type: Conference contribution Sponsorship: The authors would like to thank the support from the U.K. MOD TGOl CRP Fellowship project. Terms of use: Copyright © 2003 IEEE. Reprinted from 2003 International Symposium on Circuits and Systems, 2003 (ISCAS '03). This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of the University of Bristol's products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to By choosing to view this document, you agree to all provisions of the copyright laws protecting it.


International Symposium on Circuits and Systems, 2003

Abbreviated TitleISCAS '03
Duration1 May 2003 → …

Event: Conference

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