… This article provides a comprehensive survey of cognitive radio technology, focusing on
its application to dynamic spectrum access, especially from the perspective of realizing con…

… (PUs) and the unlicensed users/cognitive users (CUs) can be … the context of the overlay
spectrum access scheme aiming for … schemes in the overlay spectrum access scheme based on …

… SPECTRUM ACCESS POLICY ADOPTED BY BSS … following spectrum access techniques
at the cellular BS: • D2D-unaware spectrum access (DUSA) • D2D-aware spectrum access (…

… Opportunistic spectrum access describes the overlay cognitive access method, where each
cognitive … The common idea in all cases is to realize a flexible spectrum allocation policy that …

… Cognitive radios together with dynamic spectrum access attempt to overcome the described
problems. Cognitive … spectrum is regulated. New radios designed for efficiently using shared …

… We consider the problem of opportunistic dynamic spectrum access (DSA) in … cognitive
medium access control protocols are presented that allow secondary users to recognize spectrum …

… Dynamic spectrum access (DSA) is a new spectrum sharing … spectrum access is a new
spectrum sharing paradigm that allows secondary users to access the abundant spectrum holes …

… The cognitive radio (CR) technology can detect the occupancy of the spectrum and enable
the dynamic spectrum access (DSA) to fill the spectrum hole caused by the static allocation …

… paper, dynamic spectrum access (DSA) in multi-channel cognitive radio networks (CRNs)
is studied. The two fundamental issues in DSA, spectrum sensing and spectrum sharing, for a …

… spectrum band is known as Dynamic Spectrum Access (DSA). The dynamic spectrum
access technology helps to minimize unused spectrum bands. In this paper, main functions of …