Distributed Cooperative Multi-Channel Spectrum Sensing Based on Dynamic Coalitional Game

Abstract

In this paper, a distributed cooperative multi-channel spectrum sensing scheme is proposed for the non-infrastructure based cognitive radio networks. The proposed scheme has iterative property and is carried out round-by-round. In each round, each secondary user selects a few primary channels as the candidates for sensing based on primary signal-to-noise ratio. Then, the users with the same selected channel collaboratively form coalitions through coalitional game and thereby multiple games are played concurrently over multiple channels. After generating stable coalitional structure, the best coalition on each channel is chosen to perform the cooperative spectrum sensing. The simulation results show that the proposed scheme can significantly increase the number of available channels, which can be sensed with predefined miss detection and false alarm probabilities.