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IEICE TRANSACTIONS on Fundamentals

Fast Converging ADMM Penalized Decoding Method Based on Improved Penalty Function for LDPC Codes

Biao WANG

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Summary :

For low-density parity-check (LDPC) codes, the penalized decoding method based on the alternating direction method of multipliers (ADMM) can improve the decoding performance at low signal-to-noise ratios and also has low decoding complexity. There are three effective methods that could increase the ADMM penalized decoding speed, which are reducing the number of Euclidean projections in ADMM penalized decoding, designing an effective penalty function and selecting an appropriate layered scheduling strategy for message transmission. In order to further increase the ADMM penalized decoding speed, through reducing the number of Euclidean projections and using the vertical layered scheduling strategy, this paper designs a fast converging ADMM penalized decoding method based on the improved penalty function. Simulation results show that the proposed method not only improves the decoding performance but also reduces the average number of iterations and the average decoding time.

Publication
IEICE TRANSACTIONS on Fundamentals Vol.E103-A No.11 pp.1304-1307
Publication Date
2020/11/01
Publicized
2020/05/08
Online ISSN
1745-1337
DOI
10.1587/transfun.2020EAL2020
Type of Manuscript
LETTER
Category
Coding Theory

Authors

Biao WANG
  Baoji University of Arts and Sciences

Keyword