A Novel Resource Sharing Scheme for Full Duplex D2D Communication Underlaying Cellular Network

Abstract

In this paper, we propose a novel resource sharing scheme for full duplex device-to-device (D2D) communication underlaying cellular network. In the considered scenario, two D2D users share the downlink spectrum resource with two cellular users. When the two D2D users transmit signals to each other, they also act as relays between the base station (BS) and the cellular users so that the cellular users can leverage the redundant capacity of the two full duplex D2D users. To optimize the performance of the scheme, the power allocation is optimized by considering the impact of residual self-interference at full duplex radios and the quality of services (QoS) requirement for both cellular users and D2D users. The simulation results show that, compared to the existing research scheme, the proposed scheme can achieve larger sum channel capacity for the transmission of cellular users, and it can also achieve larger average system throughput at high signal to interference plus noise ratio (SINR) region.