基于无线能量采集技术的全双工中继安全网络研究

Full-duplex Relay Security Network based on Wireless Energy Harvesting Technology

在瑞利信道中,研究一种基于全双工中继的安全传输系统。为提升整个系统的安全性能,提出全双工中继节点发送人工噪声干扰窃听者的策略。系统中各节点的供能均采用基于功率分配的无线能量采集技术,使得整个系统更加环保实用。通过合理的近似分析,推导出中断概率和窃听概率的近似表达式。仿真结果表明,闭合表达式曲线与Monte Carlo仿真曲线基本吻合,验证了近似分析的准确性。对比分析不同情况下的所提模型性能,发现所提系统性能具有优越性。

In Rayleigh channels,a secure transmission system based on full-duplex relay is studied.In order to improve the security performance of the entire system,a strategy of full-duplex relay nodes sending artificial noise to eavesdroppers is proposed.Each node in the system adopts wireless energy harvesting technology based on power distribution,making the entire system more environmentally friendly and practical.Through a reasonable approximation analysis,approximate expressions of outage probability and eavesdropping probability are deduced.The simulation results indicate that the closed expression curve is basically consistent with the Monte Carlo simulation curve,which verifies the accuracy of the approximate analysis.Comparing and analyzing the performance of the proposed model under different conditions,it is found that the proposed system performance is superior.