计算机科学 ›› 2007, Vol. 34 ›› Issue (11): 286-289.

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硬盘读写通道的FIR噪声预测算法与仿真模型

  

  • 出版日期:2018-11-16 发布日期:2018-11-16
  • 基金资助:
    国家973重大基础课题资助项目(2004CB3182);国家自然科学基金资助项目(60673002,60373091);国家863计划资助项目(2005AA114180).

  • Online:2018-11-16 Published:2018-11-16

摘要: 本文提出了一种嵌入FIR噪声预测的部分响应最大似然算法(NPML—Noise-prediction Partial-response Maximum Likelihood),该算法改进了传统部分响应最大似然算法(PRML-Partial Response Maximum Likelihood)中Viterbi译码过程的分支度量计算方法,能白化信号中有色噪声,减少误码率,提高硬盘读写通道的性能。本文还建立了读写通道的图形化仿真模型,提出了FIR滤波器长系数的快速逼近方法,并构造了检验模型工作正确性的方法。通

关键词: NPML 硬盘读写通道 PRML

Abstract: Because of the improvement of the storage density in the hard disk, and the decreased space between bits to bits, the noises in the read back signals of magnetic head have been nonstationary and correlative colored noises, which can not adapt to Viterbi d

Key words: NPML, Hard disk read/write channel, PRML

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