Low Complexity Symbol Detection Method for Multilevel 2-D Optical Storage Based on a Linear Channel Model.

Moinian, Abdolhosein and Fagoonee, Lina and Honary, Bahram (2005) Low Complexity Symbol Detection Method for Multilevel 2-D Optical Storage Based on a Linear Channel Model. Optical Engineering, 44 (10). ISSN 0091-3286

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Abstract

A symbol detection scheme based on the Viterbi algorithm that simultaneously processes subsets of 2-D data in the presence of Gaussian noise was recently proposed for binary 2-D optical storage (TwoDOS). In the case of multilevel TwoDOS, a straightforward full-fledged maximum likelihood symbol detector, or even the previous Viterbi-based algorithm, is not an ideal solution due to complexity restrictions. We propose a suboptimum low complexity symbol detector, which still performs within the accepted performance bound for optical storage. We describe the procedures involved in designing and developing a practical symbol detection scheme for multilevel TwoDOS by analyzing the signal values generated by a linear channel model in the presence of Gaussian noise. Our proposed detection scheme exploits the properties of the 2-D data format on the disk, and is flexible enough to accommodate performance and complexity restrictions for optical storage applications.

Item Type: Journal Article
Journal or Publication Title: Optical Engineering
Uncontrolled Keywords: /dk/atira/pure/researchoutput/libraryofcongress/qa75
Subjects:
Departments: Faculty of Science and Technology > School of Computing & Communications
ID Code: 9873
Deposited By: ep_importer_dcs
Deposited On: 03 Jul 2008 10:18
Refereed?: Yes
Published?: Published
Last Modified: 25 Jun 2019 00:47
URI: https://eprints.lancs.ac.uk/id/eprint/9873

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