On the performance of mode selection for hybrid-duplex D2D communications

Abstract

In this paper, a transmission mode selection scheme is proposed for device-to-device (D2D) communications underlay cellular networks, where potential D2D (p-D2D) users reuse the spectrum of uplink cellular users (CUEs). The developed framework is used to analyze and understand how the underlay D2D communication affects the cellular network performance. Unlike most of the previous researchers who only consider the performance for the full-duplex (FD) or half-duplex (HD) D2D network, we investigate the performance for hybrid FD/HD-D2D communications and propose a novel mode selection scheme for D2D users. In particular, we present a tractable analytical framework for a hybrid-duplex D2D-enabled cellular network, and the outage performances of the FD/HD-D2D receiver and the typical CUE are presented. Meanwhile, the spectral efficiency (SE) of the hybrid-duplex D2D-enabled cellular networks is given. Finally, numerical results are presented to verify the proposed scheme. From the simulation results, we can see that the proposed scheme can improve system SE.