Low-complexity GEL codes for digital magnetic storage systems

Author

Fahrner, Achim ; Griesser, Helmut ; Klarer, Robert ; Zyablov, Victor V.

Author_Institution

Dept. of Telecommun. & Appl. Inf. Theor., Univ. of Ulm, Germany

Volume

40

Issue

4

fYear

2004

fDate

7/1/2004 12:00:00 AM

Firstpage

3093

Lastpage

3095

Abstract

A class of concatenated block codes, called generalized error-locating (GEL) codes, is proposed for error correction in digital magnetic storage systems. GEL codes are suited for high code rate applications with low-complexity (hard input) decoding algorithms. They offer high flexibility and can be adjusted to a variety of different situations. In this paper, we use as an example a (precoded) PR4 channel and consider GEL codes with BCH and Reed-Solomon component codes. Simulation results give bit error rates with and without constrained codes.

Keywords

BCH codes; Reed-Solomon codes; computational complexity; concatenated codes; digital magnetic recording; error correction codes; error statistics; magnetic storage; maximum likelihood decoding; partial response channels; BCH codes; Reed-Solomon component codes; bit error rates; code concatenation; code rate applications; concatenated block codes; constrained codes; digital magnetic recording; digital magnetic storage systems; error correction coding; generalized error-locating codes; hard input; low-complexity decoding algorithms; partial-response channels; partial-response maximum-likelihood; precoded PR4 channel; AWGN; Bit error rate; Block codes; Concatenated codes; Detectors; Error correction codes; Iterative decoding; Magnetic memory; Maximum likelihood decoding; Parity check codes; Code concatenation; PRML; digital magnetic recording; error correction coding; partial-response channels; partial-response maximum-likelihood;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2004.830620

Filename

1325743