Information-theoretic limits of two-dimensional optical recording channels

Paul H. Siegel

doi:10.1117/12.685223

22 June 2006 Information-theoretic limits of two-dimensional optical recording channels

Paul H. Siegel

Proceedings Volume 6282, Optical Data Storage 2006; 62820W (2006) https://doi.org/10.1117/12.685223
Event: Optical Data Storage 2006, 2006, Montréal, Canada

Abstract

During the past five years, advances in the information-theoretic analysis of "one-dimensional (1D)" recording channels have clarified the limits on linear densities that can be achieved by track-oriented magnetic and optical storage technologies. Channel architectures incorporating powerful codes, such as turbo codes and low-density parity-check codes, have been shown to achieve performance very close to the information-theoretic limits. As 1D track-oriented data storage technologies reach maturity, there is increasing interest in "two-dimensional (2D)" recording technologies, such as two-dimensional optical storage (TwoDOS) and holographic storage. This paper provides an overview of some recently developed techniques for determining analytical bounds and simulation-based estimates for achievable densities of such 2D recording channels, as well as some recently proposed signal processing and coding methods that can move system performance closer to the information-theoretic limits.

Citation Download Citation

Paul H. Siegel "Information-theoretic limits of two-dimensional optical recording channels", Proc. SPIE 6282, Optical Data Storage 2006, 62820W (22 June 2006); https://doi.org/10.1117/12.685223

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