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Proceedings Paper

PRML detection of multi-level run-length limited DVD system
Author(s): Hua Hu; Longfa Pan; Yi Ni
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Paper Abstract

Multi-level optical recording using run-length-limited (RLL) modulation is a novel method to significantly increase the information recording density without changing optical or mechanical parameters. In this paper, the experimental results of four-level RLL modulation on read-only digital versatile discs (DVD-ROM) are introduced. A new DC-free 4-level RLL (2, 8) code with code rate of 8/10 (bits/symbol) is designed, and a partialresponse maximum-likelihood (PRML) detector is adopted to evaluate the detection performance of multi-level readout signals. By analyzing and comparing the simulation performances of different PRML schemes, we conclude that PR(1, 2, 2, 2, 1) target is preferred to be applied in four-level RLL modulation DVD channels.

Paper Details

Date Published: 21 November 2007
PDF: 8 pages
Proc. SPIE 6827, Quantum Optics, Optical Data Storage, and Advanced Microlithography, 68271B (21 November 2007); doi: 10.1117/12.756940
Show Author Affiliations
Hua Hu, Tsinghua Univ. (China)
Longfa Pan, Tsinghua Univ. (China)
Yi Ni, Tsinghua Univ. (China)

Published in SPIE Proceedings Vol. 6827:
Quantum Optics, Optical Data Storage, and Advanced Microlithography
Chris A. Mack; Guangcan Guo; Guofan Jin; Song-hao Liu; Kees A. Schouhamer Immink; Jinfeng Kang; Jun-en Yao; Keiji Shono; Osamu Hirota, Editor(s)

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