论文标题
带定向天线的多个无人机的全双工航空通信系统
Full-Duplex Aerial Communication System for Multiple UAVs with Directional Antennas
论文作者
论文摘要
基于无人机的无线系统，例如无线继电器和遥感，引起了学术界和行业的极大关注。为了实现它们，桥接无人机和地面站的高性能无线航空通信系统是主要推动者之一。但是，仍然存在阻碍其发展的问题，例如无人机之间严重的共同通道干扰以及无人机的有效载荷/电池寿命有限。为了应对挑战，我们提出了一个航空通信系统，该系统可以使系统级的全双工通信具有多个无人机具有较低硬件复杂性的无人机通信，而不是理想的全双工通信系统。在提议的系统中，每个通道都会重新分配到一对无人机的上行链路和下行链路，并且每个无人机都采用一对分离的通道进行上行链路和下行链路。无人机之间的共同通道干扰可以通过利用无人机和地面电台配备的无人机的可操作性和高增益方向天线来消除相同通道的共同干扰，因此在拟议的系统中无需使用无人机和地面站的高级定向天线。给出了系统的设计和性能分析，模拟结果与设计非常吻合。
UAV-based wireless systems, such as wireless relay and remote sensing, have attracted great attentions from academia and industry. To realize them, a high-performance wireless aerial communication system, which bridges UAVs and ground stations, is one of the key enablers. However, there are still issues hindering its development, such as the severe co-channel interference among UAVs, and the limited payload/battery-life of UAVs. To address the challenges, we propose an aerial communication system which enables system-level full-duplex communication of multiple UAVs with lower hardware complexities than ideal full-duplex communication systems. In the proposed system, each channel is re-assigned to the uplink and downlink of a pair of UAVs, and each UAV employ a pair of separated channels for its uplink and downlink. The co-channel interference between UAVs that reuse same channels is eliminated by exploiting advantages of UAVs' maneuverability and high-gain directional antennas equipped in UAVs and ground stations, so that dedicated cancellers are not necessary in the proposed system. The system design and performance analysis are given, and the simulation results well agree with the designs.
