A modified extended min‐sum algorithm based on posterior probability thresholding for non‐binary low‐density parity‐check codes
Yatong Zhao, Liqian Wang, Miao Zhu, Weiming Wang, Kai Tao, Yinlong Shi, Xue Chen · Electronics Letters · 2022
Abstract 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.