In this paper, we investigate a cooperative Internet of Things (IoT) communication network with decode-and-forward relay nodes that can be eavesdropped, where the relay node harvests energy from the received signal power to charge its battery, which is used to retransmit the received signal to the destination. The secrecy communication of the energy harvesting Gaussian eavesdropping channel has been studied. The expression of secrecy energy efficiency for the cooperative IoT system with a battery-enabled relay has been derived, which depends on energy absorption rate and energy harvesting time. Then we perform analytical and numerical analysis on the performance on secrecy energy efficiency. Our analytical results reveal that the secrecy energy efficiency has a maximum under constraints. Finally, we demonstrate that our proposed model and methods are feasible from simulation results based on proposed secrecy energy efficiency maximization algorithm.

在本文中，我们研究了具有解码和转发中继节点的协作式物联网（IoT）通信网络，该中继节点可以被窃听，其中中继节点从接收到的信号功率中收集能量以为其电池充电，该电池用于重新传输接收到的信号到目的地。研究了能量收集高斯窃听通道的保密通信。推导了带有电池使能继电器的协作式物联网系统的保密能效表达，它取决于能量吸收率和能量收集时间。然后，我们对保密能效的性能进行了分析和数值分析。我们的分析结果表明，保密能效在约束条件下具有最大值。最后，