Cooperative Intelligent Transport Systems (ITS) have been subject to numerous research projects in Europe as well as globally. Cooperation is only possible if the involved entities can communicate, and wireless communication is, of course, required when vehicles are involved. Vehicular communications are currently being investigated to improve road safety and traffic management through the real-time exchange of information between vehicles, and between vehicles and road side units.
The European ITS architecture is similar to the traditional OSI layered model. The bottom layer in the European ITS architecture, namely “Access Technologies,” has the purpose to interface with the different communication technologies that are available in an ITS station. An access technology should contain at least the link and physical layers, but could also be a global navigation satellite system such as Galileo or GPS or a complete communication system (with a full protocol stack), such as UMTS, WiMAX, or WiFi.
The main research objective for this project is to address key problems in the physical layer and MAC layer of vehicular communications, including channel modeling, channel estimation and interference management. Moreover, network synchronization and positioning of vehicles are also to be studied.