Opportunistic Spectrum Access Based on Distance Over Ad Hoc Networks
Hongbo Zhu · Dianzi xuebao · 2011
The opportunistic spectrum access(OSA) techniques in the ad hoc network are researched in this paper.An access scheme is proposed,which can not only suppress the interference between the secondary and the primary users,but also realize the fair and non-conflict resource sharing among secondary users.The solved problems include the spectrum sharing,and the optimal channel selection for secondary users which assure both the interference suppression and the self-optimization.For these purposes,the double selection scheme is built between the secondary users and the available channels.Factors to select channels for secondary users are defined based on the channel available degree.So,the secondary users can select the most appropriate channel according to the service and transfer characteristics.The results prove that the double selection scheme can avoid the conflict and realize the efficient resource sharing.