Soft-Decision Viterbi Decoding for 2/4 Modulation Code in Holographic Memory
スポンサーリンク
概要
- 論文の詳細を見る
The signal quality of holographic memory is lowered by the thermal noise and shot noise of a detector, and the reproduced image distortion caused by the shrinkage of a medium. For the improvement of signal quality, soft-decision Viterbi decoding was performed after 2/4 modulation coding. For the 2/4 modulation code, a new two-dimensional reliability was defined. A method of soft-decision Viterbi decoding, which uses this reliability as the value for soft decision, was proposed. In our record/reproduction experiment using this method, the reduction in bit error rate and effectiveness of soft-decision Viterbi decoding were verified.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2006-05-15
著者
-
Nishimoto Kazumasa
Department of Applied Electronics, Tokyo University of Science, 2641 Yamasaki, Noda, Chiba 278-8510, Japan
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Naito Fuminori
Department of Applied Electronics, Tokyo University of Science, 2641 Yamasaki, Noda, Chiba 278-8510, Japan
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Yamamoto Manabu
Department of Applied Electronics, Tokyo University of Science, 2641 Yamasaki, Noda, Chiba 278-8510, Japan
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