… is to enable flexible spectrum access by employing dynamic spectrum allocation techniques
[… of users or networks adapt their operation and share access to the same spectral region in …

… radio or DSA networks, eg, see [1]. While these survey studies primarily focus on network
design problems for cognitive radio networks… the art in spectrum sensing and spectrum sharing. …

… sharing models, and the requirements for dynamic spectrum access. In addition to the …
dynamic spectrum access methods, you'll also find state-of-the-art dynamic spectrum access …

… scheme in this novel cooperative CR (CCR) network context. … the context of the overlay
spectrum access scheme aiming for … overlay spectrum access scheme based on the CCR network…

… users can opportunistically access unused spectrum vacated by … We present three spectrum
access schemes using different sens… and design criteria on opportunistic spectrum access. …

… Network Architecture We consider a cognitive radio network which composes of two types
of … The PUs own certain licensed spectrum bands where they can operate. The SUs do not …

… requirements in such networks. Performance metrics are among the key factors in ensuring
successful multiband spectrum access, and yet they have been scattered in the literature …

… trum access scheme. To provide spectrum access priority, we consider the absence or
presence of buffering mechanism for the cognitive SU, together with spectrum handoff capability. …

… With perfect sensing, we develop an optimum spectrum access strategy under generic PU
… based spectrum access strategy that achieves close-to-optimal performance. Moreover, we …

… between available vacant spectrum bands dynamically. This process is known as Dynamic
Spectrum Access which can be realised only with CR networks (Akyildiz et al., Citation2008). …