IEICE Transactions on Communications
Online ISSN : 1745-1345
Print ISSN : 0916-8516
Regular Section
Continuous BP Decoding Algorithm for a Low-Density Parity-Check Coded Hybrid ARQ System
Sangjoon PARKSooyong CHOISeung-Hoon HWANG
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2010 Volume E93.B Issue 4 Pages 993-996

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Abstract

A continuous belief propagation (BP) decoding algorithm for a hybrid automatic repeat request (ARQ) system is proposed in this paper. The proposed continuous BP decoding algorithm utilizes the extrinsic information generated in the last iteration of the previous transmission for a continuous progression of the decoding through retransmissions. This allows the continuous BP decoding algorithm to accelerate the decoding convergence for codeword determination, especially when the number of retransmissions is large or a currently combined packet has punctured nodes. Simulation results verify the effectiveness of the proposed continuous BP decoding algorithm.

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© 2010 The Institute of Electronics, Information and Communication Engineers
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