Low complexity symbol detection method for multilevel 2-D optical storage based on a linear channel model

Abdolhosein Moinian; Lina Fagoonee; Bahram Honary

doi:10.1117/1.2087647

1 October 2005 Low complexity symbol detection method for multilevel 2-D optical storage based on a linear channel model

Abdolhosein Moinian, Lina Fagoonee, Bahram Honary

Author Affiliations +

Optical Engineering, Vol. 44, Issue 10, 105201 (October 2005). https://doi.org/10.1117/1.2087647

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.

©(2005) Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation Download Citation

Abdolhosein Moinian, Lina Fagoonee, and Bahram Honary "Low complexity symbol detection method for multilevel 2-D optical storage based on a linear channel model," Optical Engineering 44(10), 105201 (1 October 2005). https://doi.org/10.1117/1.2087647

Published: 1 October 2005

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