Signals from Multi-Level Run-Length-Limited Modulation Recordings Using Partial Response Maximum Likelihood

Multi-level (ML) modulation recording technology increases the capacity of standard compact disc (CD) and digital versatile disc (DVD) rewritable systems without making changes to the optical/mechanical unit. In this paper, we introduce partial response maximum likelihood (PRML) technology to increa...

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Bibliographic Details
Published inJapanese Journal of Applied Physics Vol. 44; no. 5S; p. 3453
Main Authors Jiang, Sun-How, Kuo, Ji-Wen, Ma, Chang-Po, Lo, Feng-Hsiang
Format Journal Article
LanguageEnglish
Published 01.05.2005
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Summary:Multi-level (ML) modulation recording technology increases the capacity of standard compact disc (CD) and digital versatile disc (DVD) rewritable systems without making changes to the optical/mechanical unit. In this paper, we introduce partial response maximum likelihood (PRML) technology to increase the accuracy of reading multi level signals from a ML-Run-length-limited (ML-RLL) recorded disc. Traditional slicer detection is no longer suitable for detecting multi-level run-length-limited signals. We also show several partial-response methods and their corresponding maximum-likelihood sequential estimation (MLSE) rules for ML-RLL modulation signal detection.
ISSN:0021-4922
1347-4065
DOI:10.1143/JJAP.44.3453