BER Performance of PRML System in Perpendicular Magnetic Recording Channel With Thermal Decay

Author

Shinohara, Nobuhiro ; Osawa, Hideya ; Okamoto, Yuji ; Nakamura, Yoshihiko ; Nakamoto, A. ; Miura, Kiyotaka ; Muraoka, Hiroaki ; Nakamura, Yoshihiko

Author_Institution

Graduate Sch. of Sci. & Eng., Ehime Univ., Matsuyama

Volume

43

Issue

6

fYear

2007

fDate

6/1/2007 12:00:00 AM

Firstpage

2262

Lastpage

2264

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

Keywords

error statistics; magnetic materials; maximum likelihood estimation; perpendicular magnetic recording; runlength codes; thermal stability; BER; PMR media; PRML system; bit error rate; partial response maximum likelihood system; perpendicular magnetic recording channel; run-length-limited code; thermal decay; thermal stability; Bit error rate; Computer simulation; Equations; Gaussian noise; Magnetic noise; Magnetic recording; Perpendicular magnetic recording; Thermal degradation; Thermal engineering; Thermal stability; Long-term bit error rate (BER) performance; partial response maximum likelihood (PRML) system; perpendicular magnetic recording (PMR); run-length-limited (RLL) code; thermal decay;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2007.893422

Filename

4202913