LOW-COMPLEXITY VITERBI DETECTOR FOR MAGNETIC DISC DRIVES

Authors
GOTTFRIED NH
Citation
Nh. Gottfried, LOW-COMPLEXITY VITERBI DETECTOR FOR MAGNETIC DISC DRIVES, IEE proceedings. Part E. Computers and digital techniques, 140(1), 1993, pp. 78-80
Citations number
9
Categorie Soggetti
Computer Sciences","Computer Applications & Cybernetics
Journal title
IEE proceedings. Part E. Computers and digital techniques → ACNP
ISSN journal
01437062
Volume
140
Issue
1
Year of publication
1993
Pages
78 - 80
Database
ISI
SICI code
0143-7062(1993)140:1<78:LVDFMD>2.0.ZU;2-J
Abstract
A signal detection scheme for magnetic disc drives based on maximum li kelihood sequence detection is proposed which refers to a channel with RLL 1, 7 coding and features a trellis with three states and five tra nsitions. Owing to the RLL 1, 7 code, clock recovery is more stable th an in partial response coded systems. The decoding gain amounts to 5 d B, and may lead to an increase in capacity by a factor of 1.8 when use d for reading narrower tracks.