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Proceedings Paper

Signal quality improvement of holographic data storage by adaptive two-dimensional filter
Author(s): Yosuke Takahata; Yo Kondo; Shuhei Yoshida; Manabu Yamamoto
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Paper Abstract

In this paper, we examine whether the use of a two-dimensional finite impulse response (FIR) filter in two presently available recording/reproduction methods, the Off-axis method, results in an improvement in the signal quality. The linear minimum mean square error (LMMSE) method is first tested to examine its effectiveness in optimizing the coefficients of the FIR filter. Subsequently, the real-coded genetic algorithm (RCGA), which has the capability of searching a wide range of coefficients, is applied and the result obtained is compared with that for the LMMSE method to see if the coefficient evaluation leads to a local solution or the minimum solution. We also applied quadratic minimum mean-square-error (QMMSE) Equalizer as a nonlinear equalizer.

Paper Details

Date Published: 7 December 2010
PDF: 7 pages
Proc. SPIE 7851, Information Optics and Optical Data Storage, 78511B (7 December 2010); doi: 10.1117/12.871618
Show Author Affiliations
Yosuke Takahata, Tokyo Univ. of Science (Japan)
Yo Kondo, Tokyo Univ. of Science (Japan)
Shuhei Yoshida, Tokyo Univ. of Science (Japan)
Manabu Yamamoto, Tokyo Univ. of Science (Japan)

Published in SPIE Proceedings Vol. 7851:
Information Optics and Optical Data Storage
Feijun Song; Shiquan Tao; Francis T. S. Yu; Suganda Jutamulia; Kees A. Schouhamer Immink; Keiji Shono, Editor(s)

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