Application of pattern-output viterbi algorithm to algebraic soft-decision decoding over partial response channels

Author

Lee, Soo-Woong ; Kumar, B. V K Vijaya

Author_Institution

Dept. of Electr. & Comput. Eng., Carnegie Mellon Univ., Pittsburgh, PA, USA

Volume

14

Issue

5

fYear

2010

fDate

5/1/2010 12:00:00 AM

Firstpage

483

Lastpage

485

Abstract

The algebraic soft-decision decoding algorithm (ASD) requires a reliability matrix as its input. In this paper, a new method to construct the reliability matrix over partial response (PR) channels of interest in magnetic recording is proposed by using recently introduced pattern-output Viterbi algorithm (POVA). A modified bit-level generalized minimum distance (BGMD) algorithm is also proposed with the POVA to achieve performance gains over PR channels that are as large as gains as over AWGN channels.

Keywords

AWGN channels; Viterbi decoding; algebraic codes; magnetic recording; matrix algebra; partial response channels; AWGN channels; algebraic soft decision decoding algorithm; bit level generalized minimum distance algorithm; magnetic recording; partial response channels; pattern output Viterbi algorithm; reliability matrix; AWGN channels; Decoding; Error correction; Error correction codes; Magnetic recording; Partial response channels; Performance gain; Reed-Solomon codes; Variable speed drives; Viterbi algorithm; Reed-Solomon codes, soft-decision decoding, ASD algorithm, KV algorithm, pattern-output Viterbi algorithm, partial response channel, BGMD algorithm, BCJR algorithm;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/LCOMM.2010.05.092109

Filename

5456073