Power Control and Resource Allocation for Multi-Cell OFDM Networks With Load Coupling

In this paper, we study the power control and resource allocation problem in downlink orthogonal frequency division multiplexing networks, where mutual interference exists among cells. This mutual relation is characterized by the load coupling model. Both cell load and transmit power, where cell load measures the average proportion of resource usage in the cell, interact via the coupling model. We consider three kinds of problems, sum power minimization, sum rate maximization, and sum energy efficiency maximization. For each problem, we develop a correspondingly distributed power control and resource allocation algorithm with low complexity. Numerical results verify the effectiveness of our proposed algorithms compared with the existing algorithm.