MIMO Statistical Channel Modeling In Urban Street Communication Scenarios

Vehicle to vehicle(V2V)communication IS an indispensable part of urban street communication.In recent years,with the rapid expansion of the transportation industry,more and more vehicle-to-vehicle communication services and applications have been put into practical use.such as internet of vehicles,fault alarm,driverless and other technologies.With the advancement of science and technology,the safety performance and accuracy of these applications have also been highly guaranteed.At present,some foreign regions have begun to try driverless taxi applications,and China will also launch driverless container trucks for the first time in March 2022.The traditional vehicle-to-vehicle communication industry is gradually undergoing changes.In urban street communication,vehicle-to-vehicle communication is easily interfered by buildings,trees and crowds on the street,and the density of different scattering sources such as buildings in the street is also greatly affected.Therefore,vehicle-to-vehicle communication in different urban street terrains needs to be studied and analyzed separately to enhance stability.In practical use,the performance of the fleet vehicle communication system is closely related to the space-time-frequency correlation characteristics of the antennas.Therefore,a large number of studies on the vehicle-to-vehicle channel model have been published.For different terrains such as urban open areas,rural areas,and plateaus,it is assumed that both the transmitter antennaT_x and the receiver antennaR_x are moving,and the statistical channel characteristics are studied.However,little research has been done on the special terrain in the urban street environment,such as street sound barrier roads,C-shaped street detours with high accident rates,and special geometric model tunnels.Therefore,it is of great significance to establish a new channel model with pertinence,ease of use and accuracy.In this paper,based on the open environment of urban streets,a curve loop channel scattering model suitable for vehicle to vehicle communication system in LOS and NLOS is proposed,and then the probability density functions of launch angle and arrival angle and the auto-correlation functions of the reference model are derived.In addition,an efficient SOC simulation model is proposed,and two effective parameter calculation methods are used to compare with the reference model.Then,a novel 3D channel model for MIMO vehicle communication is proposed,and its statistical characteristics are given.Finally,considering the wireless communication in the street closed environment and the propagation mechanism different from the well-known"open air"conditions.In order to deploy reliable vehicle communication systems operating under these conditions,a large-scale MIMO V2V channel model is proposed based on the urban tunnel environment.The influence of important statistical characteristic parameters such as the size of the tunnel,the geometry,the driving direction of the vehicle,and the antenna spacing configured between the transmitter and the receiver on the channel model is deeply studied,which is conducive to better simulating V2V mobile communication in the complex urban traffic environment...