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http://dx.doi.org/10.7840/Kics.2014.39A.2.86

Error-Correcting 7/9 Modulation Codes For Holographic Data Storage  

Lee, Kyoungoh (숭실대학교 정보통신전자공학부 정보저장 및 통신 연구실)
Kim, Byungsun (숭실대학교 정보통신전자공학부 정보저장 및 통신 연구실)
Lee, Jaejin (숭실대학교 정보통신전자공학부 정보저장 및 통신 연구실)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.39A, no.2, 2014 , pp. 86-91 More about this Journal
Abstract
Holographic data storage (HDS) has a number of advantages, including a high transmission rate through the use of a charge coupled device array for reading two-dimensional (2D) pixel image data, and a high density capacity. HDS also has disadvantages, including 2d intersymbol interference by neighboring pixels and interpage interference by multiple pages stored in the same holographic volume. These problems can be eliminated by modulation codes. We propose a 7/9 error-correcting modulation code that exploits a Viterbi-trellis algorithm and has a code rate larger (about 0.778) than that of the conventional 6/8 balanced modulation code. We show improved performance of the bit error rate with the proposed scheme compared to that of the simple 7/9 code without the trellis scheme and the 6/8 balanced modulation code.
Keywords
Holographic Data Storage; Two-Dimensional Intersymbol Interference; Modulation Code;
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Times Cited By KSCI : 1  (Citation Analysis)
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