Bilateral exchange of soft-information for iterative reliability-based decoding with adaptive belief propagation

Chung-Hsuan Wang*, Yu Min Hsieh, Hsin Chuan Kuo

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

For linear block codes without a sparse graph representation, there exists an iterative decoding algorithm which combines the traditional reliability-based decoding (RBD) with adaptive belief propagation (ABP) to achieve a good tradeoff between the error performance and decoding complexity. However, in the original design of the iterative scheme, only a one-way flow of soft-information from the ABP-part to the RBD-part is available, hence limiting the performance of iterative processing. In this study, several low-complexity schemes are presented for the RBD-part to produce desirable soft-outputs such that decoded results can be bilaterally exchanged between both of the RBD and ABP parts. Simulation results also verify the superiority of the proposed idea over the conventional design.

Original languageEnglish
Pages (from-to)682-684
Number of pages3
JournalIEEE Communications Letters
Volume13
Issue number9
DOIs
StatePublished - 2009

Keywords

  • Adaptive belief propagation
  • Linear block codes
  • Reliability-based decoding

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