EMS decoding algorithm that introduced shuffled strategy and improved variable node update

Cao, Xiawei and Ji, Yuanfa and Sun, Xiyan and Liang, Weibin and Kamarul Hawari, Ghazali (2022) EMS decoding algorithm that introduced shuffled strategy and improved variable node update. In: 2022 7th International Conference on Computer and Communication Systems, ICCCS 2022 , 22-25 April 2022 , Wuhan. pp. 398-402. (181990). ISBN 978-166545060-7

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Abstract

Non-binary LDPC codes have excellent performance, but the decoding algorithm is complex. EMS algorithm reduces the search space of the check equation by truncating the iterative message vector, and exchanges performance for lower complexity. In this paper, we propose an EMS decoding algorithm (Shuffled_VNU_EMS) with a shuffled strategy and improved variable node update. This algorithm updates by column, so that the latest variable node information of the last column can be used. At the same time, to reduce the information oscillation, a weighting factor ß is introduced when updating the variable node information,ß= 0.9. The simulation results show that when the code length is 512, the code rate is 0.5 and the bit error rate is 10-4, the coding gain of the shuffled VNU EMS algorithm proposed in this paper is 0.18 dB higher than that of the classical EMS algorithm.

Item Type:	Conference or Workshop Item (Lecture)
Additional Information:	Indexed by Scopus
Uncontrolled Keywords:	Decoding algorithm; EMS; LDPC; Shuffled strategy; Variable node update
Subjects:	T Technology > T Technology (General) T Technology > TA Engineering (General). Civil engineering (General) T Technology > TK Electrical engineering. Electronics Nuclear engineering
Faculty/Division:	College of Engineering Faculty of Electrical and Electronic Engineering Technology
Depositing User:	Mr Muhamad Firdaus Janih@Jaini
Date Deposited:	29 Nov 2023 04:11
Last Modified:	29 Nov 2023 04:11
URI:	http://umpir.ump.edu.my/id/eprint/39428
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