Secrecy Performance of Untrusted Relay Systems with a Full-Duplex Jamming Destination

Rui Zhao, Xing Tan, Dong Hua Chen, Yu Cheng He, Zhiguo Ding

Research output: Contribution to journalArticlepeer-review

31 Scopus citations


To improve the secrecy performance of the untrusted relay system with a multiple-antenna destination, a novel full-duplex destination jamming scheme with optimal antenna selection (FDJ-OAS) is proposed in this paper. The approximate closed-form expressions of the average achievable secrecy rate are derived for the proposed scheme. To attain more insightful results, the approximated closed-form expressions for the average achievable secrecy rate and the optimal power allocation factor for FDJ-OAS are derived in the case with a large-scale antenna array, and simple power allocation solutions are also provided in the high and low SNR regimes, respectively. Furthermore, we derive the asymptotic expressions for the secrecy outage probability under different asymptotic conditions for the proposed scheme, and the analysis results indicate that the secrecy diversity order of FDJ-OAS is significantly superior to that of the comparable schemes. Simulation results show that the analytical curves match well with the simulation results, and the advantage of FDJ-OAS is also clearly demonstrated through performance comparison.

Original languageBritish English
Article number8439002
Pages (from-to)11511-11524
Number of pages14
JournalIEEE Transactions on Vehicular Technology
Issue number12
StatePublished - Dec 2018


  • antenna selection
  • average achievable secrecy rate
  • Full-duplex destination jamming
  • secrecy outage probability


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