Analysis of Channel Non-Stationarity for V2V and V2I Communications at 5.9GHz in Urban Scenarios

Vehicles have been an important role in people's life. However, traffic accidents caused by vehicles are increasing exponentially with the popularization of vehicles. As an important part of the intelligent transportation system (ITS), vehicle-to-everything (V2X) can improve the traffic efficiency and safety through intercommunication in the transportation system. Urban is a typical scenario in V2X communication with numerous vehicles and infrastructures. The urban channels are non-stationary due to the high speed of vehicles and scatterers. Therefore, we carried out measurement campaigns and analyzed the non-stationarity of vehicle-to-vehicle (V2V) as well as vehicle-to-infrastructure (V2I) channels. In this paper, measurement campaigns for the urban channels at 5.9 GHz were performed including 3 scenarios. The local region of stationarity (LRS) method is used to analyze the non-stationary channel based on actual measured channel data. We focus on the power delay profile (PDP), stationarity interval, and temporal PDP correlation coefficient (TPCC) of the channels. In addition, the statistics analysis of stationarity distance is also provided.