AE-BP: Adaptive erasure belief propagation decoding algorithm of LDPC codes

  • Chaonian Guo
  • , Xiangxue Li*
  • , Dong Zheng
  • , Shengli Liu
  • , Jianhua Li
  • *Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In the decoding process of LDPC codes, variable node messages often fluctuate continuously and thereby become the hindrance to the successful decoding. This paper proposes an Adaptive Erasure Belief Propagation (AE-BP) decoding algorithm to reduce the influence of these unreliable messages. The idea behind AE-BP is recording the continuous fluctuant times of variable nodes by introducing a sequence of counters, and then adaptively erasing the messages according to their fluctuant times so that other messages would recover to more precise states. Semi-Gaussian approximation demonstrates adaptive erasure is a good candidate towards offsetting the defect of unreliable messages. Experimental simulations show that, for LDPC codes AE-BP outperforms most decoding algorithms in the literature.

Original languageEnglish
Title of host publicationNCM 2009 - 5th International Joint Conference on INC, IMS, and IDC
Pages479-483
Number of pages5
DOIs
StatePublished - 2009
Externally publishedYes
EventNCM 2009 - 5th International Joint Conference on Int. Conf. on Networked Computing, Int. Conf. on Advanced Information Management and Service, and Int. Conf. on Digital Content, Multimedia Technology and its Applications - Seoul, Korea, Republic of
Duration: 25 Aug 200927 Aug 2009

Publication series

NameNCM 2009 - 5th International Joint Conference on INC, IMS, and IDC

Conference

ConferenceNCM 2009 - 5th International Joint Conference on Int. Conf. on Networked Computing, Int. Conf. on Advanced Information Management and Service, and Int. Conf. on Digital Content, Multimedia Technology and its Applications
Country/TerritoryKorea, Republic of
CitySeoul
Period25/08/0927/08/09

Keywords

  • Belief propagation
  • Iterative decoding
  • LDPC codes

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