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Article: A hybrid method for the design of oversampled uniform DFT filter banks

TitleA hybrid method for the design of oversampled uniform DFT filter banks
Authors
KeywordsAliasing effect
Amplitude distortion
Pareto optimum
Simulated annealing
Subband adaptive filter
Issue Date2006
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/sigpro
Citation
Signal Processing, 2006, v. 86 n. 7, p. 1355-1364 How to Cite?
AbstractSubband adaptive filters have been proposed to speed up the convergence and to lower the computational complexity of time domain adaptive filters. However, subband processing causes signal degradations due to aliasing effects and amplitude distortions. This problem is unavoidable due to further filtering operations in subbands. In this paper, the problem of aliasing effect and amplitude distortion is studied. The prototype filter design problem is formulated as a multi-criteria optimization problem and all the Pareto optima are sought. Since the problem is highly nonlinear and nonsmooth, a new hybrid optimization method is proposed. Different prototype filters are used and their performances are compared. Moreover, the effect of the number of subbands, the oversampling factors and the length of prototype filter are also studied. We find that prototype filters designed via Kaiser or Dolph-Chebyshev window provide the best overall performance. Also, there is a critical oversampling factor beyond which the improvement in performance is not justified. Finally, if the length of the prototype filter increases with the number of subbands, an increase in the subband level will not deteriorate the performance. © 2005 Elsevier B.V. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/74600
ISSN
2015 Impact Factor: 2.063
2015 SCImago Journal Rankings: 1.119
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorYiu, KFCen_HK
dc.contributor.authorGrbić, Nen_HK
dc.contributor.authorNordholm, Sen_HK
dc.contributor.authorTeo, KLen_HK
dc.date.accessioned2010-09-06T07:02:56Z-
dc.date.available2010-09-06T07:02:56Z-
dc.date.issued2006en_HK
dc.identifier.citationSignal Processing, 2006, v. 86 n. 7, p. 1355-1364en_HK
dc.identifier.issn0165-1684en_HK
dc.identifier.urihttp://hdl.handle.net/10722/74600-
dc.description.abstractSubband adaptive filters have been proposed to speed up the convergence and to lower the computational complexity of time domain adaptive filters. However, subband processing causes signal degradations due to aliasing effects and amplitude distortions. This problem is unavoidable due to further filtering operations in subbands. In this paper, the problem of aliasing effect and amplitude distortion is studied. The prototype filter design problem is formulated as a multi-criteria optimization problem and all the Pareto optima are sought. Since the problem is highly nonlinear and nonsmooth, a new hybrid optimization method is proposed. Different prototype filters are used and their performances are compared. Moreover, the effect of the number of subbands, the oversampling factors and the length of prototype filter are also studied. We find that prototype filters designed via Kaiser or Dolph-Chebyshev window provide the best overall performance. Also, there is a critical oversampling factor beyond which the improvement in performance is not justified. Finally, if the length of the prototype filter increases with the number of subbands, an increase in the subband level will not deteriorate the performance. © 2005 Elsevier B.V. All rights reserved.en_HK
dc.languageengen_HK
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/sigproen_HK
dc.relation.ispartofSignal Processingen_HK
dc.rightsSignal Processing. Copyright © Elsevier BV.en_HK
dc.subjectAliasing effecten_HK
dc.subjectAmplitude distortionen_HK
dc.subjectPareto optimumen_HK
dc.subjectSimulated annealingen_HK
dc.subjectSubband adaptive filteren_HK
dc.titleA hybrid method for the design of oversampled uniform DFT filter banksen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0165-1684&volume=86&issue=7&spage=1355&epage=1364&date=2006&atitle=A+hybrid+method+for+the+design+of+oversampled+uniform+DFT+filter+banksen_HK
dc.identifier.emailYiu, KFC:cedric@hkucc.hku.hken_HK
dc.identifier.authorityYiu, KFC=rp00206en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.sigpro.2005.02.023en_HK
dc.identifier.scopuseid_2-s2.0-33646122222en_HK
dc.identifier.hkuros119268en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-33646122222&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume86en_HK
dc.identifier.issue7en_HK
dc.identifier.spage1355en_HK
dc.identifier.epage1364en_HK
dc.identifier.isiWOS:000237769300001-
dc.publisher.placeNetherlandsen_HK
dc.identifier.scopusauthoridYiu, KFC=24802813000en_HK
dc.identifier.scopusauthoridGrbić, N=6603555696en_HK
dc.identifier.scopusauthoridNordholm, S=7005690573en_HK
dc.identifier.scopusauthoridTeo, KL=35569785000en_HK

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