Efficient pricing technique for resource allocation problem in uplink OFDM cognitive radio networks
Omar B. Abdulghafoor, Musbah Shaat, Mahamod B. Ismail, Rosdiadee Nordin · 2016
Cognitive radio (CR) has been proposed to solve the problem of spectrum under utilisation by opportunistically accessing unutilised bands. In this research, the problem of resource allocation in OFDM-CR networks has been examined. The main objective of this study, is to provide better control management for the interference to the primary user (PU) while maintain low complexity to the proposed algorithm. This objective has been secured by adopting pricing scheme to develop better power allocation algorithm with respect to the interference management. The performance of the proposed power allocation algorithm is tested for OFDM-based CRNs and has been compared to a number of related algorithms in the literature. The simulation results show excellent performance for the proposed algorithm compared to that algorithms presented in the literature with lower computational complexity, O(NM)+O(Nlog(N)), compared to the optimal solution.