A load-balancing semi-matching approach for resource allocation in cognitive radio networks
Georgios I. Tsiropoulos, Ming Zeng, Octavia A. Dobre, Mohamed H. Ahmed · 2016
In this paper, the resource allocation problem is considered in the context of spectrum underlay in cognitive radio (CR) networks. In such a framework, the quality of service (QoS) requirements for both primary users (PUs) and secondary users (SUs) need to be satisfied. Admission control based on removal algorithms is used jointly with power control such that the QoS requirements of all admitted SUs are satisfied, while no excessive interference is caused to PUs. For the first time in the literature, we introduce the min-weight load-balancing problem based on weighted bipartite graphs, while combining it with power control and user removal. Simulation results show that the combined algorithm achieves improved results when compared with merely using power control and user removal algorithms.