Computer Engineering and Applications ›› 2021, Vol. 57 ›› Issue (4): 77-82.DOI: 10.3778/j.issn.1002-8331.2001-0334

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Secure Transmission Scheme for Successive Relaying Networks Under Eavesdropping Environment

HUI Hui, GOU Bo, WANG Ying   

  1. School of Automation and Information Engineering, Xi’an University of Technology, Xi’an 710048, China
  • Online:2021-02-15 Published:2021-02-06



  1. 西安理工大学 自动化与信息工程学院,西安 710048


A new secure transmission scheme is proposed for the communication security of a Successive Relaying(SR) network with multiple eavesdroppers and multiple relays. In order to minimize the average Secrecy Outage Probability(SOP) of the system, at each time slot for the confidential signal transmitting from the source, one best relay is selected to successively forward the signals of the previous slot to interfere with the eavesdropping. Meanwhile interference cancellation is performed at the destination. For performance analysis, the closed-form expression of the average SOP is derived. Simulation results confirm the proposed theoretical results on the average SOP, and reveal that the proposed scheme can significantly decrease the SOP compared with the traditional ways.

Key words: physical layer security, Successive Relaying(SR), relay selection, Secrecy Outage Probability(SOP), Amplify and Forward(AF)



关键词: 物理层安全, 轮流中继(SR), 中继选择, 安全中断概率(SOP), 放大转发