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IEICE Transactions on Communications 2008 E91-B(4):1145-1148; doi:10.1093/ietcom/e91-b.4.1145
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Copyright © 2008 The Institute of Electronics, Information and Communication Engineers

Regular Section -- Letters -- Fundamental Theories for Communications

A Stopping Criterion for Low-Density Parity-Check Codes*

Donghyuk SHIN1, Jeongseok HA1, Kyoungwoo HEO1 and Hyuckjae LEE1

1 The authors are with the School of Engineering, Information and Communications University, 119 Munjiro Yuseong-gu Daejeon 305-732, Korea. E-mail: hkw06{at}icu.ac.kr


  Abstract

We propose a new stopping criterion for decoding LDPC codes which consists of a measure of decoder behaviors and a decision rule to predict decoding failure. We will show that the proposed measure, the number of satisfied check nodes, does not need (or minimizes) additional complexity, and the decision rule is efficient and more importantly channel independent, which was not possible in the previous work.

Key Words: LDPC codes, belief propagation, stopping criterion

Manuscript received August 23, 2007. Manuscript revised December 10, 2007.

* This work was supported by the Korea Research Foundation Grant funded by the Korean Government (MOEHRD, Basic Research Promotion Fund) (KRF-2007-D00282).


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