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

被引：6
|
作者：
Gu, Hua-rong [1 ]
Cao, Liang-cai [1 ]
He, Qing-sheng [1 ]
Jin, Guo-fan [1 ]
机构：
[1] Tsinghua Univ, State Key Lab Precis Measurement Technol & Instru, Beijing 100084, Peoples R China
来源：
JOURNAL OF ZHEJIANG UNIVERSITY-SCIENCE C-COMPUTERS & ELECTRONICS | 2011年 / 12卷 / 05期
基金：
中国国家自然科学基金;
关键词：
Volume holographic data storage; Modulation codes; Sparse codes; Raw bit error rate; Channel capacity; CAPACITY;
D O I：
10.1631/jzus.C1010246
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
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.
引用
收藏
页码：430 / 435
页数：6
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