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Optical Engineering

Low complexity symbol detection method for multilevel 2-D optical storage based on a linear channel model
Author(s): Abdolhosein Moinian; Lina Fagoonee; Bahram Honary
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Paper 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.

Paper Details

PDF: 8 pages
Opt. Eng. 44(10) 105201 doi: 10.1117/1.20876477
Published in: Optical Engineering Volume 44, Issue 10, October 2005
Show Author Affiliations
Abdolhosein Moinian, Lancaster Univ. (United Kingdom)
Lina Fagoonee, Lancaster Univ. (United Kingdom)
Bahram Honary, Lancaster Univ. (United Kingdom)


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