Evaluation of multiple reader location for TDMR R/W channel

Yasuaki Nakamura, Naoki Fujimoto, Yoshihiro Okamoto, Hisashi Osawa, Hiroaki Muraoka

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


The two-dimensional magnetic recording (TDMR) by shingled magnetic recording needs two-dimensional (TD) signal processing using the multiple read-back waveforms. In this paper, to allocate dual readers (reader 1 and 2) for the intended tracks, we evaluate the bit error rate (BER) performance of a low-density parity-check coding and iterative decoding system with a TD-finite impulse response equalizer under TDMR R/W channel specifications of 4 Tb/in \(^{2}\). Here, the TDMR R/W channel is modeled using a discretized granular medium and the writing process based on a slope model considering the media switching field angle given by the Stoner-Walfarth reversal mechanism. The result shows that to affect the good BER performance, the reader 1 should be placed slightly toward the next track from the center of the home track, and the reader 2 should be placed around the boundary between the home and following tracks.

Original languageEnglish
Article number6971422
JournalIEEE Transactions on Magnetics
Issue number11
Publication statusPublished - 2014 Nov 1

ASJC Scopus subject areas

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


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