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Browse Journals & Magazines > Magnetics, IEEE Transactions ...> Volume:36 Issue:5 Help

Turbo decoding for high-rate concatenated parity-check codes on PRML channels

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2 Author(s)
Sawaguchi, H. ; Central Res. Lab., Hitachi Ltd., Kokubunji, Japan ; Wolf, J.K.

A simple turbo decoding scheme is proposed for partial-response (PR) channels by using high-rate parity-check codes as an outer error-correction code (ECC). The use of the simple parity codes enables a simplified and high-speed implementation of the a posterior probability (APP) decoder. Its key feature is an iterative decoding step for the parallel concatenation of two parity-check outer codes connected via an interleaver. The parity iterative decoding can provide the high-rate parity-check outer codes with superior correction capability for random error-events, so it can help to reduce the decoding latency. The combination of the serial turbo decoding for a modified E2PR (ME2PR) channel and the parity iterative decoding demonstrated a coding gain of 4-5 dB at a bit error rate of 1.0E-5 for a coding rate of 8/9

Published in:
Magnetics, IEEE Transactions on  (Volume:36 ,  Issue: 5 )

Date of Publication: Sep 2000

Page(s):
2173 - 2175
ISSN :
0018-9464
INSPEC Accession Number:
6876894
Digital Object Identifier :
10.1109/20.908347
Product Type:
Journals & Magazines
Date of Current Version :
06 August 2002
Issue Date :
Sep 2000
Sponsored by :
IEEE Magnetics Society

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