Abstract
5G is the research and development focus of global communication technology, and is an important engine for promoting the development of the national economy and improving the level of information. As the basic strategic resource of wireless communication, spectrum is crucial to the development of 5G industry. In order to better develop the IMT-2020 system, the WRC-15 Conference resolved to identify WRC-19 1.13 issues: deliberating to identify frequency bands for future development of International Mobile Telecommunications (IMT), including the possibility of making additional divisions for mobile services as the main business. This paper is based on the WRC-19 1.13 issue, the 24.75-27.5 GHz band as its key frequency band, which is the main research content of this paper. It mainly deals with the study of adjacent frequency interference of IMT-2020 system to the Earth exploration satellite service (EESS) (passive) in 24.75-27.5 GHz frequency band.
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