Optimal channel detection for nonbinary coded partial response channels

Author

Chang, Wu ; Cruz, J.R.

Author_Institution

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

Volume

57

Issue

7

fYear

2009

fDate

7/1/2009 12:00:00 AM

Firstpage

1892

Lastpage

1895

Abstract

We derive a recursive algorithm to compute the joint maximum a posteriori probabilities of p consecutive bits on partial response channels. This channel detector is optimal for nonbinary soft-iterative decoding with multiple channel iterations. It is validated on a nonbinary low-density parity-check coded perpendicular magnetic recording channel.

Keywords

channel coding; iterative decoding; maximum likelihood estimation; parity check codes; partial response channels; recursive estimation; channel detector; joint maximum a posteriori probabilities; magnetic recording channel; multiple channel iterations; nonbinary code; nonbinary low-density parity-check code; nonbinary soft-iterative decoding; optimal channel detection; partial response channels; recursive algorithm; Concatenated codes; Detection algorithms; Detectors; Helium; Iterative decoding; Magnetic recording; Parity check codes; Partial response channels; Perpendicular magnetic recording; Reed-Solomon codes; Channel detection, partial response channels, symbol-based BCJR, magnetic recording, turbo equalization;

fLanguage

English

Journal_Title

Communications, IEEE Transactions on

Publisher

ieee

ISSN

0090-6778

Type

jour

DOI

10.1109/TCOMM.2009.07.060615

Filename

5165377