Joint resource allocation and power control for uplink multi-cell networks

Abstract

In current wireless cellular networks, interference has become the major obstacle to high spectral efficiency because of universal frequency reuse. Base station cooperation, also referred to as coordinated multi-point processing or transmission(CoMP), has emerged to mitigate it by estimating and avoiding interference from adjacent base stations(BSs). Through analyzing the scenario of CoMP, we formulate the scheduling problem as maximizing the weighted sum-rate considering both throughput and fairness. An iterative algorithm jointly handles resource allocation and power control is proposed to solve the problem. To reduce the complexity and accelerate convergence, three concepts, namely neighboring BS set, user filter and BS filter are introduced. Moreover, the performance gain and computational efficiency of our proposed algorithm are validated by system-level simulation.