RS Plus LDPC Codes for Perpendicular Magnetic Recording

Author

Chang, Wu ; Cruz, J.R.

Author_Institution

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

Volume

46

Issue

6

fYear

2010

fDate

6/1/2010 12:00:00 AM

Firstpage

1416

Lastpage

1419

Abstract

In this paper, we investigate RS plus LDPC concatenated architectures for perpendicular magnetic recording channels. Using simulations, we find the optimal code rate and iterative scheme for the concatenated codes, compare their performance in both random noise and media defects, and show that those whose inner LDPC codes have lower column weights exhibit better performance. In addition, we estimate the performance of the concatenated codes with inner LDPC codes of column weight two, at very high signal-to-noise ratios, and find their error floors.

Keywords

Reed-Solomon codes; concatenated codes; iterative methods; parity check codes; perpendicular magnetic recording; random noise; LDPC codes; RS codes; Reed-Solomon codes; concatenated codes; iterative scheme; media defects; optimal code rate; perpendicular magnetic recording; random noise; Computational modeling; Computer architecture; Concatenated codes; Error correction codes; Magnetic noise; Parity check codes; Perpendicular magnetic recording; Random media; Signal to noise ratio; USA Councils; Concatenated codes; Reed–Solomon codes; low-density parity-check (LDPC) codes; perpendicular magnetic recording;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2010.2043062

Filename

5467440