Title :
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
fDate :
5/1/2010 12:00:00 AM
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;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2010.05.092109