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Maximizing sum-rate for cellular networks with overlay D2D communication

In this paper, we consider a cellular network with overlay device-to-device (D2D) communication where same radio resources are available for conventional cellular users and D2D users. The optimization objective is to maximize the sum-rate of the system while maintaining proportional fairness among both cellular and D2D users. Minimum Rate Proportional Fairness (MRPF) algorithm is investigated and performance is compared with fixed allocation algorithm. The simulation results show the effectiveness of the proposed algorithm.