能量采集技术在主动窃听系统中的应用研究

Application Research of Energy Harvesting in Proactive Eavesdropping System

结合传统物理层安全中的能量采集技术,考虑了基于能量采集技术的可疑通信网络下的主动窃听场景,该场景中无源主动窃听者将从可疑发送者采集到的能量用于合法干扰与窃听。接着分析推导了这一场景下的窃听不中断概率的半闭合表达式,并仿真验证了各因素对窃听性能的影响情况。结果表明,能量采集时间、采集效率与可疑接收者的发射功率都是影响窃听者性能的主要因素,且相互之间都存在正比关系,但窃听性能与发送者采集效率无关。

Combined with the energy harvesting technology in traditional physical layer security,the proactive eavesdropping scene in suspicious communications with the technology of energy harvesting is considered.In this scenario,the proactive eavesdropper uses the energy collected from the suspicious sender for legitimate interference and interception.Then the semi-closed expression of the eavesdropping non-outage probability under this scenario is analyzed and derived,and the influence of various factors on the wiretapping performance is verified through simulations.The results show that the time and efficiency of energy harvesting,and the transmission power of the suspicious receiver are the main factors that affect the eavesdropper's performance,and there is a positive relationship between them,but the eavesdropping performance has nothing to do with the receiver's harvesting efficiency.