Channel capacity under measurement-based model for cooperative vehicular ad hoc networks

Infrastructure-based cooperation can significantly boost the communication performance of vehicular ad hoc networks, especially when direct transmission of inter-vehicle communication can hardly achieve the stringent requirement of safety information dissemination. In this paper, an analytical model is presented to demonstrate the performance gain of channel capacity for infrastructure-based cooperative transmission. Furthermore, we study the capacity performance for both direct transmission and cooperative communication, under generic path loss model and the measurement-based dual-slope piecewise-linear model, respectively. The analytical results can be used for vehicular networks design and roadside infrastructure deployment in highway scenarios.