IEEE Communications Letters

Node-Wise Scheduling Algorithm of ADMM Decoding Based on Line Segment Projection

Qiaoqiao Xia, Pinquan He, Xin Wang, Huiyang Liu, Qinglin Zhang

Published Jan 14, 2022• 7 citations

Abstract

In order to simplify the node-wise scheduling algorithm of the alternating direction method of multipliers (NS-ADMM) decoding, approximate line segment projection algorithm (LSA) is adopted to perform the projection in the node-wise scheduling algorithm. Experimental results show that using approximate line segment projection instead of precise projection in node-wise scheduling algorithm will yield a poor frame error rate (FER) performance. To solve this problem, dynamic scheduling strategy that selects the message-passing schedule according to the convergence status of the check node is proposed. Simulation results demonstrate that the modified node-wise scheduling algorithm based on line segment projection outperforms existing decoding algorithms in terms of FER performance and convergence speed, while it has good error correction performance with a lower computational complexity.

DOI: 10.1109/lcomm.2022.3143235

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