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

The Korean Institute of Commucations and Information Sciences (한국통신학회)
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M-ary Multitrack Run-length Limited Codes for Optical Storage Systems

광기록저장장치를 위한 M-ary 다중트랙 RLL 코드

  • Published : 1999.06.01
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Abstract

This paper introduces M-ary multitrack run-length (d.k) constrained codes for optical storage systems. We calculate capacities and densities of the codes. We have driven a general form of the state transition matrix for M-ary multitrack (d,k) codes. Using the largest eigenvalue of the transition matrix, we calculate the capacity and density. The capacity approaches to the limit with a small k constraint compared to single-track codes.

본 논문에서는 광기록저장장치를 위한 M-ary 다중트랙 런길이 제한 코드(Run-length Limited, RLL)를 제안하고, 각각의 (d,k) 조건에 따른 채널용량과 기록밀도를 계산하였다. 이를 위하여 우선 M-ary 다중트랙 (d,k) 코드를 위한 일반적인 상태전이행렬(State transition matrix)을 구하며, 그 행렬의 최대 고유치(eigenvalue)를 이용하여 채널용량을 구한다. 단일트랙코드와 비교할 때, 작은 k 값에서도 채널용량이 한계치에 도달함을 알 수 있었다.

Keywords

References

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