A two-dimensional constant-weight sparse modulation code for volume holographic data storage

被引：0
|
作者：
Hua-rong Gu
Liang-cai Cao
Qing-sheng He
Guo-fan Jin
机构：
[1] Tsinghua University,State Key Laboratory of Precision Measurement Technology and Instruments
来源：
Journal of Zhejiang University SCIENCE C | 2011年 / 12卷
关键词：
Volume holographic data storage; Modulation codes; Sparse codes; Raw bit error rate; Channel capacity; O438.1;
D O I：
暂无
中图分类号：
学科分类号：
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.
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页码：430 / 435
页数：5
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