Jitter-like noise cancellation using AR model of PR channel in perpendicular magnetic recording

Y. Okamoto, N. Masunari, H. Yamamoto, H. Osawa, H. Saito, H. Muraoka, Y. Nakamura

Research output: Contribution to journalConference articlepeer-review

15 Citations (Scopus)


Performance improvement of partial-response maximum-likelihood (PRML) system in the perpendicular magnetic recording channel with jitter-like noise is studied. Performance of a Viterbi detector is improved by applying an autoregressive (AR) model in order to estimate the detector input sequence. The required signal-to-noise ratio to achieve a bit-error rate (BER) of 10-4 is obtained by computer simulation. In addition, a BER performance is also obtained by read/write experiments using a spinstand. The results show that the proposed PRML system using an AR model exhibits better performance when compared with the normal PRML systems without an AR model.

Original languageEnglish
Pages (from-to)2349-2351
Number of pages3
JournalIEEE Transactions on Magnetics
Issue number5 I
Publication statusPublished - 2002 Sep
Externally publishedYes
Event2002 International Magnetics Conference (Intermag 2002) - Amsterdam, Netherlands
Duration: 2002 Apr 282002 May 2


  • Autoregressive model
  • Noise prediction
  • Partial-response maximum-likelihood channel
  • Perpendicular magnetic recording

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering


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