Research On Interference Analysis And System Coexistence In Internet Of Vehicles

In modern fast-paced urban life,cars have become the necessary means of transportation for people's lives.However,the popularity of cars also brings traffic congestion and frequent accidents.In order to improve the efficiency and safety of road traffic,the Internet of Vehicles came into being.However,due to the increasing frequency of spectrum resources,in the same area,there is a situation where the network system and other wireless communication systems occupy the same or adjacent frequency bands for network deployment.At the same time,due to the imperfect characteristics of the transceiver,it is easy for the system to interfere with each other,resulting in the deterioration of the system performance.Therefore,this topic mainly studies the interference between the vehicle network and the same frequency neighbor first use system,which is of great significance for promoting the development of China's Internet of vehicles.This paper mainly studies the interference between the network system and the satellite fixed(ground to air)system,the microwave relay system and the WiFi system working in the same frequency band or the adjacent frequency band,so as to realize the coexistence of the system.The combination of deterministic analysis and simulation analysis is adopted in the research.In the research,the theoretical results of the interference of the related systems are obtained through deterministic calculation.Then the simulation analysis is carried out.According to the system simulation process,the simulation of network topology module,interference point distribution module,path loss module and system performance analysis module is realized by using Matlab software.Through the simulation and analysis of interference between the systems,the interference results which are more close to the actual situation are obtained.Finally,the interference simulation results are compared with the deterministic analysis results,and the relevant conclusions are verified.In this paper,based on the 5.9GHz band communication of the vehicle interconnection system,the interference between the vehicle network and the same frequency neighbor first use system is completed.Finally,the whole paper is summarized,and the future research contents are prospected according to the implementation and technology development in this field.