Journal of Systems Engineering and Electronics ›› 2024, Vol. 35 ›› Issue (2): 286-293.doi: 10.23919/JSEE.2022.000156

• ELECTRONICS TECHNOLOGY • Previous Articles    

Efficient unequal error protection for online fountain codes

Pengcheng SHI1(), Zhenyong WANG1,2,*(), Dezhi LI1, Haibo LYU1   

  1. 1 School of Electronics and Information Engineering, Harbin Institute of Technology, Harbin 150001, China
    2 Shenzhen Academy of Aerospace Technology, Shenzhen 518057, China
  • Received:2021-09-05 Accepted:2022-05-10 Online:2024-04-18 Published:2024-04-18
  • Contact: Zhenyong WANG E-mail:shipengcheng@hit.edu.cn;ZYWang@hit.edu.cn
  • About author:
    SHI Pengcheng was born in 1995. He received his B.S. degree in mathematics & applied mathematics from Harbin Institute of Technology (HIT) in 2017. He is currently pursuing his Ph.D. degree in information & communication engineering, HIT. His current research interests include satellite communication and error control codes. E-mail: shipengcheng@hit.edu.cn

    WANG Zhenyong was born in 1977. He received his M.E. and Ph.D. degrees in information & communication engineering from Harbin Institute of Technology (HIT) in 2002 and 2007 respectively. He has been working for the Department of Electronics and Communication Engineering, HIT as an associate professor since 2012. From April 2011 to April 2012, he was at the University of Sydney in Australia as a visiting scholar. He is now with HIT as an associate professor, and a doctoral supervisor. He is a senior member of the IEEE. His research interests include satellite tracking, telemetry and control, space information networks, wireless cognitive radio, Internet of Things, and artificial intelligence. E-mail: ZYWang@hit.edu.cn

    LI Dezhi was born in 1981. He received his M.E. and Ph.D. degrees in information & communication engineering from Harbin Institute of Technology (HIT) in 2006 and 2012 respectively. He is now with HIT as a research assistant and a master supervisor. His research interests include satellite communication, digital signal processing, fountain codes, and software radio. E-mail: lidezhi@hit.edu.cn

    LYU Haibo was born in 1976. He received his master of engineering in information & communication engineering from Harbin Institute of Technology in 2004. He is currently working in Beijing Bujia Technology Co., Ltd. His research interests include satellite communication, Internet of Things, machine learning and instrumentation. E-mail: elitelv@163.com
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (61601147) and the Beijing Natural Science Foundation (L182032).

Abstract:

In this paper, an efficient unequal error protection (UEP) scheme for online fountain codes is proposed. In the build-up phase, the traversing-selection strategy is proposed to select the most important symbols (MIS). Then, in the completion phase, the weighted-selection strategy is applied to provide low overhead. The performance of the proposed scheme is analyzed and compared with the existing UEP online fountain scheme. Simulation results show that in terms of MIS and the least important symbols (LIS), when the bit error ratio is $ {10^{ - 4}} $, the proposed scheme can achieve $ 85{\text{% }} $ and $ 31.58{\text{% }} $ overhead reduction, respectively.

Key words: online fountain code, random graph, unequal error protection (UEP), rateless code