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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Published in | Japanese Journal of Applied Physics Vol. 44; no. 5S; p. 3453 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
01.05.2005
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Online Access | Get full text |
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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. |
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ISSN: | 0021-4922 1347-4065 |
DOI: | 10.1143/JJAP.44.3453 |