Reduced complexity maximum likelihood sequence estimation for multitrack high-density magnetic recording channels

Author

Kurtas, Erozan ; Proakis, John G. ; Salehi, Masoud

Author_Institution

Technol. & Eng. Dept., Quantum Corp., Shrewsbury, MA, USA

Volume

35

Issue

4

fYear

1999

fDate

7/1/1999 12:00:00 AM

Firstpage

2187

Lastpage

2193

Abstract

In this paper we investigate the problem of designing reduced complexity detectors for multitrack high-density magnetic recording systems. The detectors derived in this work operate on superstate sets and carry several survivors for each set. We show that such a reduced state increased survivor approach provides near optimal performance to the maximum likelihood method, namely the Viterbi Algorithm (VA), but operate at a fractional complexity of the VA

Keywords

digital magnetic recording; interference (signal); magnetic recording noise; maximum likelihood detection; maximum likelihood sequence estimation; Viterbi algorithm; detector design; high-density recording channels; magnetic recording channels; maximum likelihood sequence estimation; multitrack magnetic recording channels; reduced complexity MLSE; superstate sets; Algorithm design and analysis; Detection algorithms; Detectors; Interference; Life estimation; Magnetic heads; Magnetic recording; Maximum likelihood detection; Maximum likelihood estimation; Viterbi algorithm;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.774192

Filename

774192