Title :
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
fDate :
9/1/2002 12:00:00 AM
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;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2002.801896
