Title :
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
fDate :
7/1/2004 12:00:00 AM
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;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2004.830620
