3.5 GHz频段5G系统对ATG系统干扰分析

为研究3.5 GHz频段地面5G系统对地空宽带通信(air to ground, ATG)系统同频同步干扰情况，对该频段中5G系统与飞机上ATG系统间的同频共存问题进行了系统间同频共存分析. 采用5G系统技术参数，在城区、城郊连续和郊区不同场景下，仿真5G系统基站(base station, BS)对机载ATG系统干扰情况及5G系统用户对ATG BS干扰情况，分别计算得到不同场景下5G系统BS对机载ATG系统及5G系统用户对ATG BS的平均干扰功率密度. 仿真结果表明，地面5G系统BS对机上ATG系统的同频干扰影响较小，可将该干扰视为可接受干扰. 同时，本文还给出了ATG BS的部署隔离距离参考值.

Analysis of interference of 5G system to ATG system in 3.5 GHz

In order to study the co-frequency synchronous interference of the broadband terrestrial 5G system to the air-to-ground (ATG) system in the 3.5 GHz frequency band, this paper conducts the inter-system co-existence analysis between the 5G system and the ATG system in this frequency band. By using the technical parameters of the 5G system, we simulate the interference of the 5G system base station to the airborne ATG system and the interference of the 5G system user to the ATG base station in urban, suburban and rural scenarios, and calculate the average interference power density of the 5G system base station to the airborne ATG system and the 5G system user to the ATG base station in different scenarios. The results show that terrestrial 5G system base station has little impact on the co-frequency interference of the airborne ATG system, which can be regarded as acceptable interference. Meanwhile, this paper also gives a reference for the deployment isolation distance of ATG base stations.