5G基站与邻频系统之间的干扰问题研究

doi:10.11959/j.issn.1000-0801.2021242

Abstract

Abstract:

For the interference problems in frequency sharing and geographical coexistence between 5G base stations and the adjacent frequency systems such as satellite earth stations, the different situations consisting of the interferences to 5G base stations and the interferences to other stations were analyzed, and the solutions to improve interference positioning efficiency including analyzing the same frequency signal using real-time spectrum function, identifying the signal using 5G NR demodulation function, and locating the interference source combined with same-frequency multiple radio source positioning method were presented.

Key words: 5G, same frequency interference, real-time spectrum analysis

CLC Number:

TN927

Jianming YAO. Study on interference problems between 5G base stations and adjacent frequency systems[J]. Telecommunications Science, 2021, 37(11): 152-158.

Figures/Tables 8

发射机功率/W	距离D/km	路径损耗/dB	接收天线处电平/dBm	接收机输出信噪比 $\frac{S}{N_{out}} / dB$
1	9.5	121.2	-81.2	23.3

References 13

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参数		技术特点
参数	功性能说明	补充说明
工作频率	2 500～2 700 MHz	在工作频率范围内以频分模式同时传送多套电视节目
发射功率	根据服务面积来定，最大可达200 W	系列化设计，可发射的功率为1～200 W
制式	模拟、数字	数字制式逐步取代模拟制式
发射模式	单频点发射	最大覆盖距离超过50 km，可靠性较高，如用于乡村传输12路电视信号
	宽带发射	覆盖距离一般在30 km以内
天线类型	定向天线	干线传输
	全向天线	信号覆盖

中国电信	中国联通	中国移动
3 400～3 500 MHz	3 500～3 600MHz	2 515～2675MHz　4800～4900MHz

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Study on interference problems between 5G base stations and adjacent frequency systems

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References 13

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