Title
Reduced Complexity Node-Wise Scheduling of ADMM Decoding for LDPC Codes.
Abstract
Similar to the belief propagation decoder, linear programming decoding based on the alternating direction method of multipliers (ADMM) can also be seen as an iterative message-passing decoding algorithm. How to schedule messages efficiently is an important aspect since it will influence the convergence rate of iterative decoders. In this letter, we investigate the node-wise scheduling for ADMM decoders, named NS-ADMM. In particular, we propose a reduced-complexity method for the NS-ADMM decoder by avoiding Euclidean projections involved in the calculation of message residuals. Simulation results show that the proposed method converges much faster than the flooding and layered scheduling while keeping a lower complexity when compared with the NS-ADMM decoder.
Year
DOI
Venue
2017
10.1109/LCOMM.2016.2643629
IEEE Communications Letters
Keywords
Field
DocType
Decoding,Iterative decoding,Complexity theory,Convergence,Signal to noise ratio,Indexes
Convergence (routing),Sequential decoding,Computer science,Scheduling (computing),Low-density parity-check code,Real-time computing,Rate of convergence,Decoding methods,List decoding,Belief propagation
Journal
Volume
Issue
ISSN
21
3
1089-7798
Citations 
PageRank 
References 
4
0.44
11
Authors
3
Name
Order
Citations
PageRank
Xiaopeng Jiao1389.90
Jianjun Mu24110.63
Haoyuan Wei390.92