Secrecy Performance Analysis of IRS-Aided UAV Relay System

In this letter, we study the secrecy performance of an intelligent reflecting surface (IRS)-aided unmanned aerial vehicle (UAV) relay communication system in the presence of multiple ground eavesdroppers (Eves). Specifically, a UAV equipped with an IRS is deployed as a passive relay to forward the s...

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Bibliographic Details
Published inIEEE wireless communications letters Vol. 10; no. 12; pp. 2693 - 2697
Main Authors Wang, Wen, Tian, Hui, Ni, Wanli
Format Journal Article
LanguageEnglish
Published Piscataway IEEE 01.12.2021
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Communications systems
Eavesdropping
Intelligent reflecting surface
Manganese
Relay systems
Relays
Rician channels
secrecy outage probability
Security
Signal to noise ratio
Statistical analysis
UAV relay communications
Unmanned aerial vehicles
Wireless communication
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Summary:In this letter, we study the secrecy performance of an intelligent reflecting surface (IRS)-aided unmanned aerial vehicle (UAV) relay communication system in the presence of multiple ground eavesdroppers (Eves). Specifically, a UAV equipped with an IRS is deployed as a passive relay to forward the signals transmitted from the base station to users. By modeling the distribution of Eves with stochastic geometry theory and taking the estimation errors into account, we extract the novel expressions for the statistical characterizations of the signal-to-noise ratio, for both legitimate receiver and Eves. For completeness, different eavesdropping channels are investigated, namely, the cooperative and independent Eve cases. The secrecy outage probability (SOP) is analytically evaluated to unveil the impact of the number of reflecting elements and the location of UAV on SOP performance. Finally, numerical results corroborate the theoretical analysis.
ISSN:2162-2337
2162-2345
DOI:10.1109/LWC.2021.3112752