Open AccessA modified extended min‐sum algorithm based on posterior probability thresholding for non‐binary low‐density parity‐check codes
Author(s) -
Zhao Yatong,
Wang Liqian,
Zhu Miao,
Wang Weiming,
Tao Kai,
Shi Yinlong,
Chen Xue
Publication year - 2022
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/ell2.12635
Subject(s) - algorithm , offset (computer science) , binary number , decoding methods , computer science , thresholding , probability of error , mathematics , arithmetic , artificial intelligence , image (mathematics) , programming language
This letter focuses on improving the error correction performance of the extended min‐sum (EMS) decoding algorithm. Introducing factor/offset modifications in the check node update process of the EMS algorithm can improve the performance. Based on this, the authors propose a novel threshold‐based modified EMS algorithm that introduces the factor/offset in a targeted manner by setting a threshold for the posterior probability. Simulation results show that an additional performance gain of the order of 0.08 dB is obtained with the proposed method without significantly increasing the complexity of the method.