The Journal of Korean Institute of Communications and Information Sciences (한국통신학회논문지)

The Korean Institute of Commucations and Information Sciences (한국통신학회)
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4-level 6/9 Modulation Code for Holographic Data Storage

홀로그래픽 데이터 저장장치를 위한 4레벨 6/9 변조부호

  • Kim, Byungsun (Soongsil University, School of Electronic Engineering) ;
  • Park, Keunhwan (Soongsil University, School of Electronic Engineering) ;
  • Lee, Jaejin (Soongsil University, School of Electronic Engineering)
  • Received : 2014.09.25
  • Accepted : 2014.10.01
  • Published : 2014.10.31
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Abstract

A holographic data storage (HDS) has some advantages of high storage capacity, fast transmission, and short access time. However, there are two major concerns with the system which are two-dimensional (2D) inter-symbol interference (ISI) and inter-page interference (IPI). Thus, this paper proposes a 4-level 6/9 modulation code which mitigate inter-symbol interference (ISI).

홀로그래픽 데이터 저장장치는 높은 저장용량, 빠른 전송 능력, 그리고 짧은 접근 시간 등의 장점을 가진다. 하지만 홀로그래픽 데이터 저장장치는 페이지 단위로 데이터를 처리하기 때문에 생기는 2차원 인접 심볼간 간섭과 하나의 체적에 여러 면의 페이지를 기록하여서 생기는 인접 페이지간 간섭의 심각한 성능 열화의 요소가 존재한다. 본 논문에서는 한 픽셀에 여러 레벨의 심볼을 저장하는 경우 발생할 수 있는 인접 심볼간 간섭을 줄이기 위한 4-레벨 6/9 변조부호를 제안한다.

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References

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