MRヘッドと二層媒体を用いた垂直磁気記録のための二次元符号化  [in Japanese] Two-Dimensional Coding for The Perpendicular with MR head and Double Layered Medium  [in Japanese]

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Author(s)

Abstract

MRヘッドと二層媒体を用いた垂直磁気記録における再生波形の再現性を評価基準として新たな関数モデルを提案し, 従来広く用いられて来ているロレンツ関数の積分型モデルと高記録密度を条件として, 性能比較検討を行っている.用いた記録符号は一次元の2/3(1, 7)符号とd=2でレートが5/4の二次元符号である.前者の符号に関しては, ビット誤り率10^<-5>で若干提案モデルに優位性が見られた.後者の場合, 前者より所要S/N比が約10dB優れてはいるものの両モデルの性能には殆ど差が見いだせなかった.

This paper proposes a new model of approximated function under the fidelity to the read-back waveform on perpendicular magnetic recording using MR head and double layered medium and compares the performance with the conventional model with integlation format of Lorentzian function at higher density storage. We apply two recording codes for the performance comparison of both models : classical 2/3(1, 7)code and 5/4(2, k_y=4;L=3)code where L means the number of multi-track. As to 2/3(1, 7)code, our proposed model shows a little superiority to conventional model with required SN ratio at BER=10^<-5>. However, as for 5/4(2, 4;3)code, the difference on the performance between both models isn't clear even though their required SN ratio at BER=10^<-5> is better about 5dB than those of 2/3(1, 7)code.

Journal

  • IEICE technical report. Magnetic recording

    IEICE technical report. Magnetic recording 98(454), 1-6, 1998-12-10

    The Institute of Electronics, Information and Communication Engineers

References:  6

Cited by:  1

Codes

  • NII Article ID (NAID)
    110003186343
  • NII NACSIS-CAT ID (NCID)
    AN10013050
  • Text Lang
    JPN
  • Article Type
    Journal Article
  • Data Source
    CJP  CJPref  NII-ELS 
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