On GEL codes for partial response channels

Author

Fahrner, A. ; Fecker, U. ; Klarer, R. ; Grieber, Helmut

Author_Institution

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

Volume

1

fYear

2004

fDate

20-24 June 2004

Firstpage

533

Abstract

This work investigates the performance of a class of concatenated error correcting block codes, called generalized error-locating codes, over partial response channels as they are found in digital magnetic storage systems. Generalized error-locating codes are suited for high-rate high-speed applications due to the low-complexity hard input decoding algorithm. The code and the decoding algorithm is constructed according to the error structure of the channel to spend the redundancy in an advantageous way. Simulation results for the (precoded) partial response channel 1-D² (PR4) compare results for different sector lengths. It is also explained how a modulation constraint can be included in the system. The generalized error-locating codes show an impressive gain over the classically used Reed-Solomon outer codes with comparable decoding complexity.

Keywords

block codes; concatenated codes; decoding; digital magnetic recording; error correction codes; magnetic storage; modulation; partial response channels; concatenated error correction block code; digital magnetic storage system; error structure; generalized error-locating code; hard input decoding algorithm; modulation constraint; partial response channel; Block codes; Concatenated codes; Decoding; Error correction codes; Information theory; Magnetic memory; Partial response channels; Polynomials; Redundancy; Reed-Solomon codes;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, 2004 IEEE International Conference on

Print_ISBN

0-7803-8533-0

Type

conf

DOI

10.1109/ICC.2004.1312546

Filename

1312546