Collaborative Spectrum Sensing in Multi-Channel Cognitive Networks: A Coalition Game Approach
Collaborative spectrum sensing among Secondary Users (SUs) in Cognitive Radio (CR) networks is shown to yield a significant performance improvement. However, much previous work in CR networks focus on single channel sensing performed by SU cooperatively while spectrum sensing on multiple channels is largely ignored. In order to overcome the foregoing shortcoming, coalition game theory is introduced. In this paper, the authors mainly study the throughput maximization problem which considers optimizing the network throughput and channel sensing period synchronously. Moreover, the missing detection and false alarm probability are also constrained.