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

The Institute of Electronics and Information Engineers (대한전자공학회)
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4-Level Balanced Modulation Code for the Mitigation of Two-Dimensional Intersymbol Interference in Holographic Data-Storage Systems

홀로그래픽 데이터 저장장치에서 2차원 심볼 간 간섭을 완화하기 위한 4-레벨 균형 변조부호

  • Park, Keunhwan (School of Electronics Engineering, Soongsil University) ;
  • Lee, Jaejin (School of Electronics Engineering, Soongsil University)
  • 박근환 (숭실대학교 전자정보공학) ;
  • 이재진 (숭실대학교 전자정보공학)
  • Received : 2016.08.12
  • Accepted : 2016.08.31
  • Published : 2016.09.25
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Abstract

In the holographic data storage system (HDSS), the data regarding the volume of a storage medium are recorded and read by the page, and the transmission rate and storage capacity can be increased because of two-dimensional, page-oriented data processing; furthermore, the multi-level HDSS can store more than one bit per pixel. For this same reason, however, and unlike conventional data-storage systems, the HDSS is hampered by two-dimensional (2D) intersymbol interference (ISI) and interpage interference (IPI). Progress regarding the published papers on 2D ISI, which is more severe in the multi-level HDSS, continues; however, mitigation of both 2D ISI and IPI in terms of the multi-level HDSS has not yet been studied. In this paper, we therefore propose a 4-level balanced-modulation code that simultaneously mitigates 2D ISI and IPI.

홀로그래픽 데이터 저장 장치(HDSS)는 페이지 단위로 저장 매체의 체적에 데이터를 저장 및 판독하고 2차원으로 데이터를 처리하기 때문에 데이터 전송 속도 및 저장 용량이 증가한다. 게다가, 멀티레벨 HDSS는 한 픽셀에 한 비트이상을 저장할 수 있다. 하지만 2차원으로 페이지를 처리하므로 기존의 데이터 저장 시스템과 달리 2차원으로 인접한 심볼 간 간섭(ISI) 및 인접 페이지 간 간섭(IPI)가 발생한다. 기존에 발표된 논문들은 멀티레벨 HDSS 환경에서 2차원 ISI 완화에 관한 연구에 초점을 두었지만 멀티레벨 HDSS 환경에서 2차원 ISI와 IPI를 동시에 완화하는 연구는 진행되지 않았다. 본 논문에서는 2차원 ISI 및 IPI를 동시에 완화하는 4-레벨 균형 변조부호를 제안하였다.

Keywords

References

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