Track squeeze using adaptive intertrack interference equalization

Author

Ahmed, Mohammed Zaki ; Davey, Paul J. ; Donnelly, Terry ; Clegg, Warwick W

Author_Institution

Dept. of Commun. & Electron. Eng., Univ. of Plymouth, UK

Volume

38

Issue

5

fYear

2002

fDate

9/1/2002 12:00:00 AM

Firstpage

2331

Lastpage

2333

Abstract

A new maximum likelihood sequence detection (MLSD) technique to reduce the effects of intertrack interference (ITI) is presented. As track densities increase, ITI and offtrack interference (OTI) occur and have detrimental effects on the performance of current MLSD decoders. A solution, described in this paper, is to perform MLSD with an adaptive ITI equalizer constructed within the decoder trellis.

Keywords

adaptive equalisers; interference suppression; magnetic recording; maximum likelihood decoding; maximum likelihood sequence estimation; partial response channels; runlength codes; ITI equalizer; MLSD decoders; PR4 channel model; RLL code; adaptive equalizer; adaptive intertrack interference equalization; decoder trellis; decoding; intertrack interference; magnetic recording; maximum likelihood sequence detection; offtrack interference; partial response channels; run-length limited code; track squeeze; AWGN; Adaptive equalizers; Convergence; Crosstalk; Finite impulse response filter; Interference; Least squares approximation; Maximum likelihood decoding; Maximum likelihood detection; Signal to noise ratio;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2002.801896

Filename

1042178