论文标题
无人机辅助继电器网络中的最佳干扰器放置
Optimal Jammer Placement in UAV-assisted Relay Networks
论文作者
论文摘要
我们考虑无人驾驶汽车（UAV）的中继应用，其中将无人机放置在两个收发器（TR）之间以增加系统的吞吐量。我们没有研究现有文献中所追求的无人机的放置，而是专注于研究干扰器的放置或在地面上的主要干扰来源，以有效地降低系统的性能，这是通过TRS之间的最大可实现数据传输率来衡量的。我们证明，干扰器的最佳位置通常是一个非凸优化问题，为此，直接获得解决方案是棘手的。之后，使用信噪比（SIR）表达式的固有特征，我们提出了一种可拖动的方法来找到干扰器的最佳位置。基于提出的方法，我们研究了干扰器在双跳和多跳的无人机中继设置中的最佳定位。提供数值模拟以评估我们提出的方法的性能。
We consider the relaying application of unmanned aerial vehicles (UAVs), in which UAVs are placed between two transceivers (TRs) to increase the throughput of the system. Instead of studying the placement of UAVs as pursued in existing literature, we focus on investigating the placement of a jammer or a major source of interference on the ground to effectively degrade the performance of the system, which is measured by the maximum achievable data rate of transmission between the TRs. We demonstrate that the optimal placement of the jammer is in general a non-convex optimization problem, for which obtaining the solution directly is intractable. Afterward, using the inherent characteristics of the signal-to-interference ratio (SIR) expressions, we propose a tractable approach to find the optimal position of the jammer. Based on the proposed approach, we investigate the optimal positioning of the jammer in both dual-hop and multi-hop UAV relaying settings. Numerical simulations are provided to evaluate the performance of our proposed method.
