전자공학회논문지 (Journal of the Institute of Electronics and Information Engineers)

  • 제52권6호
  • /
  • Pages.10-14
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  • 2015
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  • 2287-5026(pISSN)
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  • 2288-159X(eISSN)
대한전자공학회 (The Institute of Electronics and Information Engineers)
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홀로그래픽 데이터 저장 장치를 위한 2차원 인접 심볼간 간섭 보상

Two Dimensional Inter-symbol Interference Compensation for Holographic Data Storage

  • 정성권 (숭실대학교 전자정보공학부) ;
  • 이재진 (숭실대학교 전자정보공학부)
  • Jeong, Seongkwon (School of Electronics Engineering, Soongsil University) ;
  • Lee, Jaejin (School of Electronics Engineering, Soongsil University)
  • 투고 : 2015.04.21
  • 심사 : 2015.05.22
  • 발행 : 2015.06.25
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초록

홀로그래픽 데이터 저장장치는 매질의 체적에 데이터를 저장하고 CCD를 사용하여 2차원 픽셀의 이미지로써 데이터를 처리하기 때문에 빠른 데이터 전송률과 저장 용량을 현저히 증가시킬 수 있다. 하지만 홀로그래픽 저장장치는 기존의 저장장치들과는 다른 오류 요인인 2차원 인접심볼간 간섭이 발생한다. 본 논문에서는 홀로그래픽 데이터 저장장치에서 읽은 데이터가 검출기를 통과하기 전에 전처리과정을 통하여 인접심볼간 간섭을 줄이는 방법을 제안한다. 이 방법은 어긋남을 보정하기 위한 전처리과정과 변조부호방법을 결합하여 사용할 수도 있다는 장점이 있다.

In holographic data storage systems, data is recorded and read by page on a volume of storage medium, and it can increase transmission rate and storage capacity because of two-dimensional page-oriented data processing by charge-coupled devices. However, HDS suffers two-dimensional intersymbol interference unlike conventional data storages. In this paper, we propose a preprocessing method of decreasing ISI before read data in HDS pass to detector. This method has some advantage when we collaborate with the preprocessing for reducing misalignment error and modulation code.

키워드

참고문헌

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