基于无人机的三维MIMO信道建模与仿真分析

针对无人机通信环境特点以及多输入多输出(multiple input multiple output,MIMO)系统,将三维空间相关法建模和机身遮挡现象相结合,提出一种无人机的三维移动空间信道模型(three dimensional dynamic spatial channel model, 3DD SCM)。〖JP2〗推导了无人机天线阵列的相关性表达式,同时提出一种遮挡控制器来表示无人机与地面在通信过程中受到机身遮挡的影响。通过仿真分别分析了无人机不同飞行方向和机身遮挡对信道性能的影响,验证了该信道模型的正确性和有效性。该无人机通信模型可用于指导无人机天线设计,研究编码技术。

Three dimension MIMO channel modeling and simulation analysis based on UAV

For unmaned aerial vehick (UAV) communication environment characteristics and the multiple input multiple output system （MIMO）, which combined the three dimensional (3D) spatial correlation method and the body shadowing phenomenon, a kind of the UAV 3D dynamic spatial channel model is put forward, referred to as 3DD SCM. Correlation expressions of the UAV antenna array are derived, and a kind of shielding controller is proposed to express body shadowing effects of the UAV and ground in the process of communication. Through the simulation analysis of the UAV in different flight directions and body shadowing effects on channel performance, verify the correctness and effectiveness of the channel model. The UAV communication model can be used to guide the UAV antenna design and research the coding technology.