BER performance of PRML system in perpendicular magnetic recording channel with thermal decay

Nobuhiko Shinohara, Hisashi Osawa, Yoshihiro Okamoto, Yasuaki Nakamura, Atsushi Nakamoto, Kenji Miura, Hiroaki Muraoka, Yoshihisa Nakamura

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

The long-term bit error rate (BER) performance of partial response maximum likelihood (PRML) system in a perpendicular magnetic recording (PMR) channel with thermal decay is studied. A thermal decay model based on the experimental data for three CoPtCr-SiO2 PMR media with different thermal stability is obtained. Then, the performance of PR1ML channel for the 16/17(0,6/6) and 128/130(0,16/8) codes as a run-length-limited (RLL) code is evaluated by computer simulation using the model. Moreover, the relationships between the elapsed time and the BER are obtained for the combinations of two RLL codes and three PMR media and their performances are compared. The results show that for the combination of the 128/130(0,16/8) code and the medium with the poorest thermal stability, the degradation with the elapsed time is noticeable compared with the other combinations.

Original languageEnglish
Pages (from-to)2262-2264
Number of pages3
JournalIEEE Transactions on Magnetics
Volume43
Issue number6
DOIs
Publication statusPublished - 2007 Jun

Keywords

  • Long-term bit error rate (BER) performance
  • Partial response maximum likelihood (PRML) system
  • Perpendicular magnetic recording (PMR)
  • Run-length-limited (RLL) code
  • Thermal decay

ASJC Scopus subject areas

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

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