Influence of writing ITI effects in shingled magnetic recording

Hirofumi Nobuhara, Yoshihiro Okamoto, Yasuaki Nakamura, Kazuki Takada, Masato Yamashita, Hisashi Osawa, Hiroaki Muraoka

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

In this paper, the influence of the intertrack interference (ITI) at writing in shingled magnetic recording (SMR) as well as at reading is examined using a read/write model based on recording on a medium composed of discrete Voronoi diagram by a triangular writer with trailing and one-side shields. Two kinds of ITI's at writing which affect the magnetic grains on the track currently being written and the previously recorded track are shown. One is that a part of signal on the previously recorded track remains on the current track due to lack of writing ability of writer. Another is that a part of signal is erased by the next-track writing. The effects are caused from the adjacent tracks at writing. Additionally the ITI at reading deteriorates the read-back waveform. Consequently these ITI's bring the decoding errors. The results by computer simulation using above R/W model show that the decoding errors occur in the low density parts of track which were originally considered to be hard to make errors.

Original languageEnglish
Article number6559247
Pages (from-to)3814-3817
Number of pages4
JournalIEEE Transactions on Magnetics
Volume49
Issue number7
DOIs
Publication statusPublished - 2013

Keywords

  • Decoding error
  • Discrete Voronoi model
  • Intertrack interference (ITI)
  • Shingled magnetic recording (SMR)

ASJC Scopus subject areas

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

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