中文摘要：

研究了一种非可信放大转发中继与全双工目的节点相结合的传输模型。为提升系统安全性能,提出了全双工目的节点干扰（full duplex-destination based jamming,FD-DBJ）策略。同时结合半双工目的节点干扰策略以及放大转发中继策略对比分析系统安全性能。在瑞利衰落信道下,通过合理的近似分析推导出三种策略遍历安全容量的近似闭合表达式。分析与仿真结果显示,在高信噪比下,理论分析曲线与蒙特卡洛仿真结果基本吻合,并对三种策略的性能进行对比,凸显出FD-DBJ策略的性能优越性。并分析了FD-DBJ传输策略的最优功率分配因子。

英文摘要：

A transmission model is investigated by combining the untrusted amplify-and-forward relay with full-duplex desti- nation. To improve the secrecy performance of the system, the full duplex destination based jamming （FD-DBJ） scheme is proposed. The traditional half duplex DBJ scheme and the amplify-and-forward relaying scheme are compared with the pro- posed one to analyze the system performance. Through the reasonable analysis, the approximate closed-form solutions are de- rived for three strategies in the Rayleigh fading channel. Analyses and simulation results show that, in the high SNR regime, the analytical curves match well with the simulation results, and the advantage of FD-DBJ is also revealed through the per- formance comparison of three strategies. The optimal power allocation factor is analyzed for the FD-DBJ transmission strategy.