Mapping Spectrum Sharing Techniques With Cognitive Radio Applications

ABSTRACT The rapid growth of the wireless communication services, has led to under-utilization of the spectrum .Cognitive Radio (CR) is a solution of the increasing demand of the spectrum. The CR includes four main cycles: spectrum sensing, spectrum decision, spectrum sharing, and spectrum mobility. The CR network architecture is divided into the primary network and the secondary network. This paper presents the Cognitive Radio network architecture for both infrastructure network and Ad Hoc network. The spectrum sharing techniques for the CR will be discussed. The most spectrum sharing functions are included in MAC. So, the spectrum sharing solutions will be explained for cognitive radio MAC design. Finally, CR applications and the proposed issues will be explained to solve research challenges in spectrum sharing.