  This paper investigates the cooperative full-duplex device-to-device (D2D)
communication underlaying cellular network, where the cellular user (CU) acts
as a full-duplex relay to assist the D2D communication. To simultaneously
support D2D relaying and uplink transmission, superposition coding and
successive interference cancellation are adopted at the CU and the D2D
receiver, respectively. The achievable rate region and joint outage probability
are derived to characterize the performance of the considered system. An
optimal power allocation scheme is proposed to maximize the minimum achievable
rate. Besides, by analyzing the upper bound of the joint outage probability, we
study a suboptimal power allocation to improve the outage performance. The
simulation results confirm the theoretical analysis and the advantages of the
proposed power allocation schemes.
