Applications of low-density parity-check codes to magnetic recording channels

Author

Song, Hongxin ; Todd, Richard M. ; Cruz, J.R.

Author_Institution

Sch. of Electr. Eng. & Comput. Sci., Oklahoma Univ., Norman, OK, USA

Volume

19

Issue

5

fYear

2001

fDate

5/1/2001 12:00:00 AM

Firstpage

918

Lastpage

923

Abstract

We consider the use of high-rate low-density parity-check (LDPC) codes for magnetic recording. We design and evaluate the performance of a magnetic recording system, which uses an LDPC code as the error-correcting code, in conjunction with a rate 16/17 quasimaximum-transition-run (QMTR) channel code on a modified E²PR4 (ME²PR4)-equalized channel. Iterative decoding between the partial response channel and the LDPC code is performed. Simulations show that an additional four-dB gain over the QMTR code can be obtained by the LDPC code. The algorithms used to design this LDPC code are also discussed

Keywords

block codes; channel coding; digital magnetic recording; equalisers; error correction codes; error statistics; iterative decoding; linear codes; partial response channels; BER; LDPC code; Lorentzian channel; ME²PR4-equalized channel; QMTR code; algorithms; bit-error rate; error-correcting code; high-rate parity-check codes; iterative decoding; linear block code; low-density parity-check codes; magnetic recording channels; magnetic recording system; modified E²PR4-equalized channel; partial response channel; performance evaluation; quasimaximum-transition-run channel code; simulations; turbo code; Bit error rate; Convolutional codes; Error correction codes; Iterative algorithms; Iterative decoding; Magnetic recording; Parity check codes; Partial response channels; Performance gain; Turbo codes;

fLanguage

English

Journal_Title

Selected Areas in Communications, IEEE Journal on

Publisher

ieee

ISSN

0733-8716

Type

jour

DOI

10.1109/49.924875

Filename

924875