Multiuser Orthogonal Signal Division Multiplexing for Doubly-Selective Fading Channel in Autonomous Vehicular Communications

Communication networks with highly mobile users are emerging rapidly. Autonomous vehicular communication is an interesting example of such systems. High mobility speed causes drastic change in channel states, and consequently a doubly selective fading scenario is a proper model for such channels. In this paper, by considering this proper model, we introduce a multiuser system based on orthogonal signal division multiplexing in a cognitive radio scenario. Carrier interferometry codes are also utilized in this system. By designing the transmitter and receiver, the performance of such system is investigated. We show that this system works properly when users are moving rapidly, and moreover the random delay of different users can be dealt with effectively.