CONSTRAINED-COMPLEXITY EQUALIZER DESIGN FOR FIXED DELAY TREE-SEARCH WITH DECISION-FEEDBACK

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dc.contributor.authorMoon, Jaekyunko
dc.contributor.authorSHE, Sko
dc.date.accessioned2013-02-25T23:34:42Z-
dc.date.available2013-02-25T23:34:42Z-
dc.date.created2012-02-06-
dc.date.created2012-02-06-
dc.date.issued1994-09-
dc.identifier.citationIEEE TRANSACTIONS ON MAGNETICS, v.30, no.5, pp.2768 - 1-
dc.identifier.issn0018-9464-
dc.identifier.urihttp://hdl.handle.net/10203/66036-
dc.description.abstractFixed delay tree search with decision feedback (FDTS/DF) is a hybrid detection scheme which incorporates a sequence detector into the decision feedback equalizer (DFE). When applied to minimum-runlength-limited channels, the FDTS/DF provides near-optimal detection performance with a reasonable complexity requirement. It has been shown recently that for the special case of search depth 1 and the channel subject to the d = 1 run length constraint, a simpler structure arises for the decision elements of the FDTS/DF, which provides asymptotically-equivalent performance to the originally proposed FDTS/DF structure. We demonstrate the asymptotic optimality of this reduced FDTS/DF based on a simple signal-to-noise ratio argument. We also introduce a design criterion for choosing tap weights for the constrained-complexity FDTS/DF, which assumes the finite impulse response (FIR) structure for its forward and feedback filters. A method to compute optimal tap weights for the forward and feedback filters is then presented for a magnetic recording channel subject to the popular minimum runlength constraint, d = 1. Results show that under the d = 1 constraint, the FDTS/DF with one-bit decision delay achieves a large performance improvement over the DFE.-
dc.languageEnglish-
dc.publisherIEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC-
dc.subjectMAGNETIC RECORDING CHANNEL-
dc.subjectPARTIAL-RESPONSE-
dc.subjectPERFORMANCE-
dc.subjectSTORAGE-
dc.titleCONSTRAINED-COMPLEXITY EQUALIZER DESIGN FOR FIXED DELAY TREE-SEARCH WITH DECISION-FEEDBACK-
dc.typeArticle-
dc.identifier.wosidA1994PD54100010-
dc.identifier.scopusid2-s2.0-0028514911-
dc.type.rimsART-
dc.citation.volume30-
dc.citation.issue5-
dc.citation.beginningpage2768-
dc.citation.endingpage1-
dc.citation.publicationnameIEEE TRANSACTIONS ON MAGNETICS-
dc.contributor.localauthorMoon, Jaekyun-
dc.contributor.nonIdAuthorSHE, S-
dc.type.journalArticleArticle-
dc.subject.keywordPlusMAGNETIC RECORDING CHANNEL-
dc.subject.keywordPlusPARTIAL-RESPONSE-
dc.subject.keywordPlusPERFORMANCE-
dc.subject.keywordPlusSTORAGE-
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