Open AccessLow‐latency BP decoder of polar code with alternate‐structure scheduling scheme
Author(s) -
Zhang Xiaojun,
Yan Xiaofeng,
Cui Jianming,
Dong Yanfei
Publication year - 2020
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2020.1408
Subject(s) - decoding methods , latency (audio) , computer science , scheduling (production processes) , belief propagation , polar , algorithm , real time computing , parallel computing , telecommunications , mathematics , mathematical optimization , physics , astronomy
In this Letter, a new scheduling scheme for belief propagation (BP) is proposed to reduce the decoding latency. All the stages update messages at the same time, it improves the reliability and accelerates the decoding convergence. The authors also remove the last stage of factor graph to reduce computational complexity. Simulations show that the average decoding latency of a (1024,512) polar code is reduced to 29.4 clocks.