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Conference Paper: Improved roundoff noise performance in a direct-form IIR filter using a modified delta operator

TitleImproved roundoff noise performance in a direct-form IIR filter using a modified delta operator
Authors
KeywordsElectronics
Issue Date2001
PublisherIEEE.
Citation
Proceedings - Ieee International Symposium On Circuits And Systems, 2001, v. 2, p. II773-II776 How to Cite?
AbstractAmong various direct-form delta operator filters, the delta direct-form II transposed (δDFIIt) has been shown to produce the lowest roundoff noise in finite-word-length implementations. Recent analyses focus on the optimization of the free parameter Δ of the delta operator, with scaling of the structure to prevent arithmetic overflow. This paper proposes a modified δDFIIt second-order section in which the Δs at different branches are separately optimized to further suppress roundoff noise gain. Noise variance plots against pole locations are presented. Closed-form expressions for the optimal filter coefficients are derived and reduction of noise gain is confirmed by numerical examples.
Persistent Identifierhttp://hdl.handle.net/10722/46232
ISSN

 

DC FieldValueLanguage
dc.contributor.authorWong, Nen_HK
dc.contributor.authorNg, TSen_HK
dc.date.accessioned2007-10-30T06:45:19Z-
dc.date.available2007-10-30T06:45:19Z-
dc.date.issued2001en_HK
dc.identifier.citationProceedings - Ieee International Symposium On Circuits And Systems, 2001, v. 2, p. II773-II776en_HK
dc.identifier.issn0271-4310en_HK
dc.identifier.urihttp://hdl.handle.net/10722/46232-
dc.description.abstractAmong various direct-form delta operator filters, the delta direct-form II transposed (δDFIIt) has been shown to produce the lowest roundoff noise in finite-word-length implementations. Recent analyses focus on the optimization of the free parameter Δ of the delta operator, with scaling of the structure to prevent arithmetic overflow. This paper proposes a modified δDFIIt second-order section in which the Δs at different branches are separately optimized to further suppress roundoff noise gain. Noise variance plots against pole locations are presented. Closed-form expressions for the optimal filter coefficients are derived and reduction of noise gain is confirmed by numerical examples.en_HK
dc.format.extent361753 bytes-
dc.format.extent21012 bytes-
dc.format.extent21377 bytes-
dc.format.mimetypeapplication/pdf-
dc.format.mimetypetext/plain-
dc.format.mimetypetext/plain-
dc.languageengen_HK
dc.publisherIEEE.en_HK
dc.relation.ispartofProceedings - IEEE International Symposium on Circuits and Systemsen_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.rights©2001 IEEE. 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 to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.en_HK
dc.subjectElectronicsen_HK
dc.titleImproved roundoff noise performance in a direct-form IIR filter using a modified delta operatoren_HK
dc.typeConference_Paperen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0271-4302&volume=2&spage=773&epage=776&date=2001&atitle=Improved+roundoff+noise+performance+in+a+direct-form+IIR+filter+using+a+modified+delta+operatoren_HK
dc.identifier.emailWong, N:nwong@eee.hku.hken_HK
dc.identifier.emailNg, TS:tsng@eee.hku.hken_HK
dc.identifier.authorityWong, N=rp00190en_HK
dc.identifier.authorityNg, TS=rp00159en_HK
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.doi10.1109/ISCAS.2001.921185en_HK
dc.identifier.scopuseid_2-s2.0-0034998486en_HK
dc.identifier.hkuros58788-
dc.identifier.volume2en_HK
dc.identifier.spageII773en_HK
dc.identifier.epageII776en_HK
dc.identifier.scopusauthoridWong, N=35235551600en_HK
dc.identifier.scopusauthoridNg, TS=7402229975en_HK

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