Error rate analysis of partial response channels in the presence of texture noise

Author

Xing, Xinzhi ; Bertram, H. Neal

Author_Institution

Center for Magnetic Recording Res., California Univ., San Diego, La Jolla, CA, USA

Volume

35

Issue

3

fYear

1999

fDate

5/1/1999 12:00:00 AM

Firstpage

2070

Lastpage

2079

Abstract

A model for error rate analysis including the effect of texture noise is described. The impact of long-range correlated and nonstationary texture noise on system performance is examined for various types of partial response (PR4 and EPR4) channels and replay heads [magnetoresistive and giant magnetoresistive (GMR)]. A higher-order partial response polynomial (EPR4) is found to have better tolerance to disk substrate texture. It is also found that the recording medium noise dominates the error rate of systems using GMR heads for a typical recording system. The evaluations of the signal, noise, and the consequential probability of error for a PR4 system are illustrated in detail

Keywords

magnetic disc storage; magnetic recording noise; maximum likelihood detection; partial response channels; EPR4; GMR; PR4; consequential probability; disk substrate texture; error rate analysis; higher-order partial response polynomial; long-range correlated noise; nonstationary texture noise; partial response channels; recording medium noise; replay heads; Anisotropic magnetoresistance; Colored noise; Disk recording; Error analysis; Giant magnetoresistance; Magnetic heads; Magnetic noise; Partial response channels; System performance; White noise;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.764915

Filename

764915