非对称成对载波接入无人机5G通信网终端链路功率校准系统设计

Design of Asymmetric Paired Carrier Access UAV 5G Communication Network Terminal Link Power Calibration System

摘要:

当信号功率在较大范围内变化时,无人机上的射频前端设备在处理信号时存在非线性特性,在进行功率校准时,如果按照线性模型进行校准,会产生较大的误差。对此,研究非对称成对载波接入无人机5G通信网终端链路功率校准系统。在系统硬件部分,改装链路功率计、载波/通信信号分析仪、频谱仪、衰减器与放大器等硬件元件。在硬件系统支持下,模拟通信网终端链路中非对称成对载波接入过程建立终端链路,根据链路特性,分配无人机5G通信网终端链路功率,并将其作为功率校准目标,通过观测通信网终端链路实时功率,校准目标与功率观测值以确定功率校准量,实现系统的通信网终端链路功率校准功能。通过系统测试得出结论:与传统系统相比,优化设计系统的功率校准偏差量明显降低,同时降低通信网络的误码率与丢包率,由此提升无人机5G通信网的通信质量。

Abstract:

When the signal power changes in a large range, the RF front-end equipment on the UAV has nonlinear characteristics when processing the signal. When calibrating the power according to the linear model, it will produce large errors. In this regard, the power calibration system of terminal link for asymmetric paired carrier access to UAV 5g communication network is studied. In the hardware part of the system, hardware components such as link power meter, carrier/communication signal analyzer, spectrum analyzer, attenuator and amplifier are modified. With the support of the hardware system, the terminal link is established by simulating the asymmetric paired carrier access process in the terminal link of the communication network. According to the link characteristics, the power of the terminal link of the UAV 5g communication network is allocated and used as the power calibration target. By observing the real-time power of the terminal link of the communication network, the power calibration quantity is determined by calibrating the target and the power observation value, so as to realize the power calibration function of the terminal link of the communication network of the system. Through the system test, it is concluded that compared with the traditional system, the power calibration deviation of the optimized design system is significantly reduced, and the bit error rate and packet loss rate of the communication network are reduced, so as to improve the communication quality of the UAV 5g communication network.