Coalition Formation Game for Resource Allocation in D2D Uplink Underlaying Cellular Networks

This letter focuses on the problem of joint resource allocation and power control in device-to-device (D2D) uplink underlaying cellular networks. The resource allocation is formulated as a coalition formation game to maximize the D2D system throughput. Unlike the existing works where users randomly join a coalition, we utilize the priority sequences to guide the order that cellular users (CUEs) switch from the coalition. Furthermore, a novel initialization based on the priority sequences is proposed to reduce the number of the switching operation. The power control scheme based on the whale optimization algorithm (WOA) is presented to optimize the power allocation and further improve the system throughout. Finally, the near-optimal performance of the proposed algorithm is demonstrated by simulations.