Two-Dimensional Constant-Weight Block Code in Orthogonal Aperture-Multiplexing for Multilayered Waveguide Holographic Memory
スポンサーリンク
概要
- 論文の詳細を見る
For a two-dimensional constant-weight block code, we show that the recording density is proportional to code rate and the second power of the size of the bright point. Second, we show four constant-weight block codes (two 2:16 codes, a 4:24 code, and a 4:16 code) with different code rates. In simulation experiments, we measured the maximum size of bright points for each code, the bit error rate was practical ($10^{-4}$ or less), and simulation results show that the maximum size increases as the code rate decreases. Then, we show that the highest recording density is achieved with the two 2:16 codes and the 4:24 code and that these codes are suitable for orthogonal aperture-multiplexing. We also show that there is a trade-off between multiplexity and the code rate.
- 2008-11-25
著者
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ENDO Masahiro
NTT Cyber Space Laboratories, NTT Corporation
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Imai Tadayuki
Ntt Photonics Laboratories
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Furuya Akinori
Ntt Microsystem Integrations Laboratories Ntt Corporation
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Yagi Shogo
Ntt Photonics Laboratories Nippon Telegraph And Telephone Corporation
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YOSHIKAWA Hiroshi
NTT Cyber Space Laboratories
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Ueno Masahiro
Ntt Cyber Space Laboratories Ntt Corporation
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Kurokawa Yoshiaki
Ntt Cyber Space Laboratories Ntt Corporation
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Ando Yasuko
NTT Cyber Space Laboratories, Nippon Telegraph and Telephone Corporation, 3-9-11 Midori-cho, Musashino, Tokyo 180-8585, Japan
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Ohtani Yoshimitsu
NTT Cyber Space Laboratories, Nippon Telegraph and Telephone Corporation, 3-9-11 Midori-cho, Musashino, Tokyo 180-8585, Japan
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Ohtani Yoshimitsu
NTT Cyber Space Laboratories, Nippon Telegraph and Telephone Corp., 3-9-11 Midoricho, Musashino, Tokyo 180-8585, Japan
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Endo Masahiro
NTT Cyber Space Laboratories, Nippon Telegraph and Telephone Corp., 3-9-11 Midoricho, Musashino, Tokyo 180-8585, Japan
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Yagi Shogo
NTT Photonics Laboratories, Nippon Telegraph and Telephone Corporation, 3-1 Morinosato Wakamiya, Atsugi, Kanagawa 243-0198, Japan
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Furuya Akinori
NTT Microsystem Integration Laboratories, Nippon Telegraph and Telephone Corporation, 3-1 Morinosato Wakamiya, Atsugi, Kanagawa 243-0198, Japan
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Imai Tadayuki
NTT Photonics Laboratories, Nippon Telegraph and Telephone Corporation, 3-1 Morinosato Wakamiya, Atsugi, Kanagawa 243-0198, Japan
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