出版社：Academy & Industry Research Collaboration Center (AIRCC)
摘要：Cognitive Radio (CR) technology opens the door for the opportunistic use of the licensedspectrum to partially address the issues relevant to the limited availability of unlicensedfrequencies. Combining CR and Wi-Fi to form the so called White-Fi networks, has beenproposed for achieving higher spectrum utilization. This paper discusses the spectrum sensingin White-Fi networks and the impacts that they have on the QoS of typical applications. It alsoreports the analysis of such impacts through various simulation studies. We also propose such asensing strategy that can adapt to the IEEE 802.11e requirements. The proposed strategy aimsto enhance overall QoS while maintaining efficient sensing. Simulation results of the proposedmechanism demonstrate a noticeable improvement in QoS.
