To prevent detection of communication between legitimate users by warden and guarantee a strong security in wireless networks, covert communication technique is recommended. The covert communication is based on hiding the main message in the background of noise which poses challenges such as low transmission rate. On the other hand, the transmit power in the conventional networks is supplied by separate built-in batteries, which are sometimes hard to be recharged or replaced especially in the military applications. In this work, to tackle the low transmission rate, we employ three dimensions beamforming in which we can focus the main beam on the legitimate user and minimize the leakage information at the warden. Moreover, in the proposed network, we intend to employ cooperative jamming (CJ) to increase covert rat in which the jammer is equipped to multiple antennas. Furthermore, to tackle the recharging or replacing batteries in the proposed network, we employ the energy harvesting (EH) technique. The simulation results reveal that the energy harvesting from the jammer’s signal reduce the total power consumption. Moreover, the simulation results show that the optimality gap is about 50% according to energy harvesting technique, and the 3D beamforming increases covert rate about 70% compared to two-dimensional beamforming method.

为了防止守望者检测到合法用户之间的通信并保证无线网络的强大安全性，建议使用隐蔽通信技术。隐蔽通信基于将主要消息隐藏在噪声背景中，这带来了传输速率低等挑战。另一方面，传统网络中的发射功率由单独的内置电池提供，有时很难充电或更换，尤其是在军事应用中。在这项工作中，为了解决低传输率的问题，我们采用了三维波束成形，我们可以将主波束聚焦在合法用户上，并最大限度地减少守卫处的泄漏信息。此外，在提议的网络中，我们打算使用协作干扰（CJ）来增加隐蔽的老鼠，其中干扰器配备了多个天线。此外，为了解决拟议网络中的充电或更换电池问题，我们采用了能量收集 (EH) 技术。仿真结果表明，从干扰信号中收集能量可以降低总功耗。此外，仿真结果表明，能量收集技术的最优差距约为50%，与二维波束形成方法相比，3D波束形成的隐蔽率提高了约70%。仿真结果表明，从干扰信号中收集能量可以降低总功耗。此外，仿真结果表明，能量收集技术的最优差距约为50%，与二维波束形成方法相比，3D波束形成的隐蔽率提高了约70%。仿真结果表明，从干扰信号中收集能量可以降低总功耗。此外，仿真结果表明，能量收集技术的最优差距约为50%，与二维波束形成方法相比，3D波束形成的隐蔽率提高了约70%。