Research On Modeling And Simulation Of Vehicle-to-vehicle(V2V) Communication Channel

In recent years,technologies such as 5G,big data and driverless have been the research hotspots.The development of these technologies has also promoted the research of intelligent transportation systems(ITS),among which vehicle-to-vehicle(V2V)Communication technology is getting more and more attention.V2 V communication technology is a mobile communication technology that does not rely on a fixed base station,and provides users with wireless communication services that are directly connected end to end.V2 V communication technology is used to establish a reliable and timely vehicle self-organizing network(Vehicular Ad hoc Networks,VANET).VANET can promote the rapid transmission of road information and provide Internet services.The premise of esta blishing VANET is to design a safe and reliable vehicle communication system.V2 V communication channel modeling is the premise of constructing this system.Therefore,it is necessary to study and establish an accurate and suitable V2 V communication channel model.Common V2 V models are: single-ring model,double-ring model and elliptical model,but these simple models are not enough to describe the complex scattering environment.This paper proposes a new 2D model combined with multiple input and multiple output(Multiple-input Multipleoutput,MIMO)technology,and deduces the channel autocorrelation function(auto correlation function,ACF),the spatial cross-correlation function(cross correlation function,CCF),the power spectral density(power spectr um density,PSD).Write the corresponding MATLAB code to make a corresponding graph and compare it with the measured value to verify the accuracy and universality of the new model.For urban street environments with low traffic density,a 3D elliptical cylinder model is used.Combined with MIMO technology,the ACF and CCF of the channel are derived,and the simulation model is obtained by using the appropriate parameter calculation method.Considering the importance of channel capacity to the communication system,the effects of factors such as antenna spacing,number of antennas,signal-to-noise ratio,and elevation angle on channel capacity are studied.