Fitting And Optimization Of Vehicle-to-vehicle Communication Channel Model For Typical Scenarios

With the advancement of the industrialization process of intelligent connected vehicles,academia and industry have paid more attention to the research of test methods.As a key method of intelligent connected vehicle tests,the research on In-Chamber V2V(Vehicle to Vehicle)simulation test methods has become the current hotspot problem,and the simulation of communication channel characteristics is the key issue of In-Chamber simulation testing.This thesis focuses on V2 V channel modeling and the key research works are the fitting and optimization of 3D irregular geometric channel models for typical V2 V communication scenarios.The main research works of this thesis are as follows:Firstly,the research status of the V2 V communication channel model,weather attenuation model,and electromagnetic interference model are analyzed.In view of the shortcomings of the existing models,the necessity of fitting and optimizing the 3D irregular geometric channel model is pointed out.Secondly,the environmental factors that affect V2 V communication are analyzed,and in combination with the distribution characteristics of the actual scenarios,the environmental parameters of each typical scenario are summarized.Thirdly,the impact of weather and external electromagnetic interference sources on V2 V communication are analyzed.Three kinds of weather features-rain,fog,and sanddust storm are considered,while corresponding electromagnetic wave attenuation models are established.Then,three kinds of interference sources,which are high-speed rail,base stations and vehicles,are considered to establish multiple interference model for different scenarios.Fourthly,according to the distribution of reflection points,and combining the distribution characteristics of the reflection points corresponding to Non-line-of-sight(NLOS)in actual vehicle-to-vehicle communication,the 3D irregular geometric channel model is fitted;then a field test schedule is formulated and road data is collected to verify the effectiveness of proposed model.At last,an optimize model,which combine weather attenuation model,multiinterference source model and fitted channel model,is proposed.Then the specific scenario design method is given,and typical examples are designed to simulate and analyze the optimized model.Then an In-Chamber V2 V communication test scheme is designed.