| The IMT-2020 system requires a large amount of spectrum resources.Since the technology of related equipment in the frequency band below 6 GHz is relatively mature,the IMT-2020 system will be preferentially deployed in the frequency band below 6 GHz,and the auxiliary frequency band will be planned in the frequency band above 6 GHz only if the service demand cannot be met.In the related research of IMT-2020,the development of radio frequency indicators,spectrum planning and system deployment need to rely on the study of inter-system interference coexistence.Therefore,the IMT-2020 inter-system interference coexistence research plays an important role in the development of the IMT-2020 system.This topic is mainly for the coexistence of interference between IMT-2020 system and IMT-2020 system,the coexistence of interference between IMT-2020 system and fixed satellite system,for 3GPP standardization process,China IMT-2020 system candidate frequency band planning Contribute to the deployment of the IMT-2020 system to advance the development of the IMT-2020 system.This thesis is selected in the"IMT-2020 Band Inter-System Interference Simulation Platform Technical Service Project"of the enterprise cooperative research project.This thesis focuses on the IMT-2020 system and IMT-2020 system adjacent frequency interference coexist,IMT-2020 system and fixed satellite system(FSS)co-frequency and adjacent frequency interference coexistence research,when the IMT-2020 system is deployed in the frequency band below 6 GHz(especially 3.5 GHz).The main work of the thesis is as follows:1.The thesis completed the study of the coexistence of adjacent frequency interference between IMT-2020 system and IMT-2020 system.A static simulation platform for inter-communication of IMT-2020 inter-system interference is built,and the simulation results are obtained through simulation platform.The values of RFIRs such as ACIR,ACLR,and ACS required for the coexistence of two adjacent frequency IMT-2020 systems are given,and recommendations for the formulation of 3 GPP standards are given.2.The thesis completed the coexistence of co-frequency and adj acent-frequency interference between indoor and outdoor IMT-2020 systems and FSS systems.A semi-dynamic simulation platform of IMT-2020 system and FSS system was built to carry out deterministic theoretical analysis.Through the analysis of deterministic analysis and simulation results,the recommendations for spectrum planning below 6 GHz are given,as well as the additional isolation and isolation distance required for indoor and outdoor IMT-2020 systems and FSS in the same frequency or adjacent frequency deployment. |
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