Vehicular Channel Characteristics and Modeling

Nowadays, intelligent transportation systems and vehicular networks are developing rapidly with ever-increasing researches on the vehicular communication channels. Vehicle-to-everything (V2X) communications is a key technology for future vehicular networks and applications, which enables vehicles to obtain a broad range of traffic information such as real-time road conditions, road information, pedestrian information, etc., and thus improve driving safety, reduce congestion, improve traffic efficiency, and provide in-vehicle entertainment. It is well-known that the successful design of any wireless communication system requires a proper description of the propagation environment and a corresponding realistic yet easy-to-use channel model. Hence, in this chapter, we will first review recent advances in vehicular channel measurements and modeling, and then provide a new generic wideband geometry-based stochastic modeling. In addition, by taking the new features due to 5G into consideration, the challenges and open issues for 5G vehicular channel measurements and modeling are discussed.