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Front. Inform. Technol. Electron. Eng.  2011, Vol. 12 Issue (5): 430-435    DOI: 10.1631/jzus.C1010246
    
A two-dimensional constant-weight sparse modulation code for volume holographic data storage
Hua-rong Gu*, Liang-cai Cao, Qing-sheng He, Guo-fan Jin
State Key Laboratory of Precision Measurement Technology and Instruments, Tsinghua University, Beijing 100084, China
A two-dimensional constant-weight sparse modulation code for volume holographic data storage
Hua-rong Gu*, Liang-cai Cao, Qing-sheng He, Guo-fan Jin
State Key Laboratory of Precision Measurement Technology and Instruments, Tsinghua University, Beijing 100084, China
 全文: PDF(244 KB)  
摘要： In order to simplify the threshold determination, reduce the inter-pixel cross-talk, and improve the storage density for high-density volume holographic data storage, a two-dimensional constant-weight sparse modulation code is proposed. The evaluation criteria and design rules are investigated based on the page-oriented optical data storage system. Coding parameters are optimized to achieve large channel capacities. An 8:16 modulation code is designed to reduce the raw bit error rate and its performances are experimentally evaluated. A raw bit error rate of the magnitude of 10?4 is obtained with a single-data-page storage and 10?3 with multiplexing.
关键词： Volume holographic data storage;  Modulation codes;  Sparse codes;  Raw bit error rate;  Channel capacity    
Abstract: In order to simplify the threshold determination, reduce the inter-pixel cross-talk, and improve the storage density for high-density volume holographic data storage, a two-dimensional constant-weight sparse modulation code is proposed. The evaluation criteria and design rules are investigated based on the page-oriented optical data storage system. Coding parameters are optimized to achieve large channel capacities. An 8:16 modulation code is designed to reduce the raw bit error rate and its performances are experimentally evaluated. A raw bit error rate of the magnitude of 10?4 is obtained with a single-data-page storage and 10?3 with multiplexing.
Key words: Volume holographic data storage    Modulation codes    Sparse codes    Raw bit error rate    Channel capacity
收稿日期: 2010-05-27 出版日期: 2011-05-09
CLC:  O438.1  
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Hua-rong Gu
Liang-cai Cao
Qing-sheng He
Guo-fan Jin

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Hua-rong Gu, Liang-cai Cao, Qing-sheng He, Guo-fan Jin. A two-dimensional constant-weight sparse modulation code for volume holographic data storage. Front. Inform. Technol. Electron. Eng., 2011, 12(5): 430-435.

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