Joint Mode Selection and Interference Management in Device-to-Device Device Communications Underlaid MIMO Cellular Networks
Abstract: This paper considers a device-to-device device device (D2D) communications underlaid multiple-input multiple-output output cellular network and studies D2D mode selection from a previously unexamined perspective. Since D2D mode selection affects the network interference profile and vice versa, a joint D2D mode selection and interference management nt is desired but challenging. In this paper, we propose a holistic approach to this problem with interference interference-free free considerations. We adopt the degrees-of-freedom freedom (DoFs) as the mode-selection mode selection criterion and exploit the linear interference alignment technique technique for interference management. We analyze the achievable sum DoF of the potential D2D users according to their mode selections, and derive the probabilistic sum-rate sum rate relations between the proposed DoF-based based mode selection scheme and the common received-signalreceived strength-index-based based mode selection scheme in Poisson point process networks. Simulation illustrates the theoretical insights and shows the advantages of the proposed DoF-based based mode selection scheme over conventional mode selection schemes from variouss perspectives. The proposed scheme presents a promising proposal for D2D mode selection in 5G communications.