论文标题
考虑3D天线模式的大规模访问空中物联网的干扰分析和缓解措施
Interference Analysis and Mitigation for Massive Access Aerial IoT Considering 3D Antenna Patterns
论文作者
论文摘要
由于物联网（IoT）网络的密集部署，干扰管理成为一个关键的挑战。随着空中物联网设备的扩散，例如无人驾驶汽车（UAV），在3D环境中的干扰特性将与现有的陆地物联网网络中的干扰特性不同。在本文中，我们考虑了具有空中和地面连接的混合物的3D拓扑IoT网络，地面节点的低成本跨二极天线和空中节点上的Omni方向天线。考虑到大规模的通信方案，我们首先以封闭形式得出了物联网接收器的通道增益的统计数据，同时考虑到地面和空中节点的辐射模式。然后使用这些来计算可实现的可实现速率，这是空中接收器高度的函数。我们提出了一种使用不同偶极天线设置的3D天线辐射模式的干扰缓解方案。我们的结果表明，使用拟议的方案，随着空中接收器的高度的增加，可实现的可实现速率会提高。另外，最大化峰值速率的地面和空中接收器之间的比率也随空中物联网接收器高度增加。
Due to dense deployments of Internet of things (IoT) networks, interference management becomes a critical challenge. With the proliferation of aerial IoT devices, such as unmanned aerial vehicles (UAVs), interference characteristics in 3D environments will be different than those in the existing terrestrial IoT networks. In this paper, we consider 3D topology IoT networks with a mixture of aerial and terrestrial links, with low-cost cross-dipole antennas at ground nodes and omni-directional antennas at aerial nodes. Considering a massive-access communication scenario, we first derive the statistics of the channel gain at IoT receivers in closed form while taking into account the radiation patterns of both ground and aerial nodes. These are then used to calculate the ergodic achievable rate as a function of the height of the aerial receiver. We propose an interference mitigation scheme that utilizes 3D antenna radiation pattern with different dipole antenna settings. Our results show that using the proposed scheme, the ergodic achievable rate improves as the height of aerial receivers increases. In addition, the ratio between the ground and aerial receivers that maximizes the peak rate also increases with the aerial IoT receiver height.
