NDLI: Turbo decoding of a low-density generator matrix code for a high-density magnetic recording channel

Content Provider	IEEE Xplore Digital Library
Author	Nishiya, T. Mita, S. Nara, T.
Copyright Year	2000
Description	Author affiliation: Syst. Dev. Lab., Hitachi Ltd., Yokohama, Japan (Nishiya, T.)
Abstract	In this paper, we propose a turbo decoding method for a low-density generator matrix code. It is based on the Bahl-Cocke-Jelinek-Raviv (BCJR) algorithm and the belief propagation (BP) algorithm. Userbits with high error probability are selected for the BP algorithm by using the soft-output of the BCJR algorithm. Since the amount of calculation in the BP algorithm increases exponentially with the number of the userbits, the amount of calculation is reduced drastically by the selection of the userbits with higher error probability. We showed that the use of the proposed algorithm and 16/17 MTR code on an MEEPR4 channel results in a performance better than that obtained without turbo decoding.
Starting Page	1882
Ending Page	1886
File Size	430485
Page Count	5
File Format	PDF
ISBN	0780364511
DOI	10.1109/GLOCOM.2000.891960
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2000-11-27
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Magnetic recording Maximum likelihood decoding Performance gain Iterative algorithms Error probability Intersymbol interference Maximum likelihood detection Semiconductor device noise Iterative decoding Belief propagation
Content Type	Text
Resource Type	Article

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