Resource Allocation for Relay-Assisted D2D Communications with Network Coding

Network coding is widely adopted in ad hoc networks to enhance the network throughput while few attention has been paid on applying it in device- to-device (D2D) networks. In this paper, we consider a relay-assisted D2D network with inter- session network coding, where multiple D2D users coexist in an underlaying manner. We aim to maximize the sum throughput via joint power and resource group allocation, which is formulated as a mixed integer programming problem. To solve this problem, an iterative algorithm with low complexity is accordingly proposed. Simulation results verify the effectiveness and superiority of the proposed algorithm compared with existing algorithms.