Performance improvement of PRML system using AR channel model in perpendicular magnetic recording

Yoshihiro Okamoto; Noriyuki Masunari; Hirofumi Yamamoto; Hisashi Osawa; Hidetoshi Saito; Hiroaki Muraoka; Yoshihisa Nakamura

doi:10.1002/ecjb.10170

Performance improvement of PRML system using AR channel model in perpendicular magnetic recording

Yoshihiro Okamoto, Noriyuki Masunari, Hirofumi Yamamoto, Hisashi Osawa, Hidetoshi Saito, Hiroaki Muraoka, Yoshihisa Nakamura

Broadband Engineering Division

Research output: Contribution to journal › Article › peer-review

Abstract

We studied an improvement in the error rate performance of the PRML system in perpendicular magnetic recording. We improved the decoder performance by adopting an AR channel model in the estimation calculation of the input sequence in Viterbi decoding. We determined the required signal-to-noise ratio at the readout point and the line recording density needed to achieve a bit error rate of 10^-4 from computer simulations and recording and playback tests using a spinstand, and compared them to a conventional PRML system. The results clearly showed improved performance in the PRML system by using a Viterbi decoder employing the AR channel model.

Original language	English
Pages (from-to)	18-27
Number of pages	10
Journal	Electronics and Communications in Japan, Part II: Electronics (English translation of Denshi Tsushin Gakkai Ronbunshi)
Volume	87
Issue number	7
DOIs	https://doi.org/10.1002/ecjb.10170
Publication status	Published - 2004 Jul 1

Keywords

AR channel model
Jitter medium noise
PRML system
Perpendicular magnetic recording

ASJC Scopus subject areas

Physics and Astronomy(all)
Computer Networks and Communications
Electrical and Electronic Engineering

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10.1002/ecjb.10170

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Performance improvement of PRML system using AR channel model in perpendicular magnetic recording. / Okamoto, Yoshihiro; Masunari, Noriyuki; Yamamoto, Hirofumi et al.

In: Electronics and Communications in Japan, Part II: Electronics (English translation of Denshi Tsushin Gakkai Ronbunshi), Vol. 87, No. 7, 01.07.2004, p. 18-27.

Research output: Contribution to journal › Article › peer-review

Okamoto, Y, Masunari, N, Yamamoto, H, Osawa, H, Saito, H, Muraoka, H & Nakamura, Y 2004, 'Performance improvement of PRML system using AR channel model in perpendicular magnetic recording', Electronics and Communications in Japan, Part II: Electronics (English translation of Denshi Tsushin Gakkai Ronbunshi), vol. 87, no. 7, pp. 18-27. https://doi.org/10.1002/ecjb.10170

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AU - Nakamura, Yoshihisa

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Performance improvement of PRML system using AR channel model in perpendicular magnetic recording

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Keywords

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