Outage constrained joint precoding for D2D underlay cellular networks

This work studies constrained rate maximization problem for clustered device-to-device (D2D) communication in cellular networks. In the cluster, only one capable user equipment (cluster head) downloads data from the base station. D2D communication is used for local data sharing between the cluster head and other user equipments in the cluster. When sharing and reusing cellular spectrum resources, D2D links must control the potential impact of mutual interference. In a scenario that D2D is only allowed by eNB when the cochannel cellular QoS constraint can be achieved, we investigate joint precoding strategy of D2D and cochannel cellular transmission subject to the cellular outage probability constraint. Based on estimated cellular channel state information (CSI), we analyze the feasibility and optimality of the constrained rate maximization problem and provide optimized solutions for different scenarios. Our simulation demonstrates the advantage of the proposed precoding strategy in satisfying cellular QoS and improving D2D rate.