Decoding of Decode and Forward (DF) Relay Protocol using Min-Sum Based Low Density Parity Check (LDPC) System

Main Article Content

Jamaah Binti Suud
Hushairi Zen
Al-Khalid Othman
Khairuddin Ab Hamid


Decoding high complexity is a major issue to design a decode and forward (DF) relay protocol. Thus, the establishment of low complexity decoding system would beneficial to assist decode and forward relay protocol. This paper reviews existing methods for the min-sum based LDPC decoding system as the low complexity decoding system. Reference lists of chosen articles were further reviewed for associated publications. This paper introduces comprehensive system model representing and describing the methods developed for LDPC based for DF relay protocol. It is consists of a number of components: (1) encoder and modulation at the source node, (2) demodulation, decoding, encoding and modulation at relay node, and (3) demodulation and decoding at the destination node. This paper also proposes a new taxonomy for min-sum based LDPC decoding techniques, highlights some of the most important components such as data used, result performances and profiles the Variable and Check Node (VCN) operation methods that have the potential to be used in DF relay protocol. Min-sum based LDPC decoding methods have the potential to provide an objective measure the best tradeoff between low complexities decoding process and the decoding error performance, and emerge as a cost-effective solution for practical application.

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How to Cite
Suud, J. B., Zen, H., Othman, A.-K., & Ab Hamid, K. (2022). Decoding of Decode and Forward (DF) Relay Protocol using Min-Sum Based Low Density Parity Check (LDPC) System. International Journal of Communication Networks and Information Security (IJCNIS), 10(1). (Original work published April 20, 2018)
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Author Biographies

Jamaah Binti Suud, University Malaysia Sarawak

Jamaah Suud is a PhD candidate in electronic and electrical engineering at University Malaysia Sarawak, Malaysia. She is graduated her first degree in BEng (Hons) electronics and computer engineering in University Malaysia Sarawak and Master Degree in communication and computer engineering from The National University of Malaysia. Her research interest is in cooperative communication, digital signal processing and error control coding.

Hushairi Zen, University Malaysia Sarawak

Hushairi Zen obtained his Doctor of Philosophy (PhD) in 2009 at Edith Cowan University, Perth in Wireless Local Area Network. His area of expertise includes wireless communication, data and voice networking, remote monitoring and control, and renewable energy.

Al-Khalid Othman, University Malaysia Sarawak

Al-Khalid Othman was born on July 12, 1971, in Kuching Sarawak, Malaysia. He is graduated his first degree in BEng (Hons) in Electrical and Electronic Engineering in Nottingham Trent University, U.K in 1995 and Masters in Information Technology (Digital) at Nottingham University, U.K. in 1996. He gained PhD in Engineering, specialized in Underwater Acoustic Network at Newcastle University, U.K. in 2007. He became a Member (M) of Board of Engineers Malaysia since 16 November 1999. His research interests include underwater communication, wireless protocol, networking and renewable energy.

Khairuddin Ab Hamid, University Malaysia Sarawak

KhairuddinAb Hamid is currently Vice Chancellor, University Malaysia of Computer Science and Engineering (UniMy). He was the former Vice Chancellor of Universiti Malaysia Sarawak (UNIMAS). He graduated with PhD degree from University of Essex, UK in electronic systems engineering. He has published extensively in journals, proceedings, books, technology guidebooks and encyclopedia. He is active in research work related to rural informatics, wireless technology and renewable energy. He was member of Asian Info-communications Council and currently an expert consultant for Telecommunications Technology Committee of Japan to carry out rural ICT projects in ASEAN countries. He is currently Chairman of the National ICT Human Resource Taskforce, Chairman of the Technical Committee on Collaboration between Malaysia and Infosys Technologies, India and Chairman of Expert Panel on Human Capital Development under the National Information Technology Council. He is also member of the National Science and Research Council and National Higher Education Council.