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Acta Armamentarii ›› 2020, Vol. 41 ›› Issue (1): 102-107.doi: 10.3969/j.issn.1000-1093.2020.01.012

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Research on the Physical Layer Security Technologies of Two-way Cooperative Relay Networks

PAN Lei1,2, LI Zan1, LI Xiangyang2, ZHANG Fenggan2   

  1. (1.State Key Laboratory of ISN, Xidian University, Xi'an 710071, Shaanxi, China; 2.Rocket Force University of Engineering, Xi'an 710025, Shaanxi, China)
  • Received:2019-01-14 Revised:2019-01-14 Online:2020-02-22

Abstract: In the information battlefield, more and more attention is attached to the application of the military mobile communication system in the field of military communication. In order to improve the secrecy performance of military mobile communication system, the physical layer security transmission of two-way cooperative relay systems is investigated. A joint relay selection and power allocation scheme based on the standard particle swarm optimization is proposed to maximize the system secrecy rate against the eavesdropper. The proposed scheme is compared with equal power allocation with optimal relay selection scheme, optimal power allocation with random relay selection scheme and equal power allocation with random relay selection scheme through simulation. The simulated results show that the proposed scheme outperforms the other schemes. It can be used to improve the system secrecy rate, effectively resist the eavesdroppers, and significantly improve the system secrecy performance. Key

Key words: two-waycooperativerelaynetwork, physicallayersecurity, relayselection, powerallocation, secrecyrate, particleswarmoptimization

CLC Number: