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Power Control in D2D-Based Vehicle Communication with Delayed CSI Feedback

We maximize vehicle throughput in device-to-device (D2D)-enabled vehicle communication links guaranteeing the reliability communication of cellular user equipment (CUE). The channel state information (CSI) of vehicle to vehicle (V2V) is reported to base station (BS) periodically. which means that every V2V link has latency CSI feedback from BS. Based on this, V2V link is described by dynamic channel gain. The objective function can be converted as a convex expression through successive convex approximation. And the constraints can be transformed into determine form through Bernstein approximation. Then the optimal solution of problem can be obtained. Computer simulation verifies the feasibility of the proposed algorithm.