A resource allocation framework is presented for spectrum underlay in cognitive wireless
networks. We consider both interference constraints for primary users and quality of service …

We consider a cognitive radio network in which a set of base stations make opportunistic
unlicensed spectrum access to transmit data to their subscribers. As the spectrum of interest …

We investigate the dynamic spectrum sharing problem among primary and secondary users
in a cognitive radio network. We consider the scenario where primary users exhibit on-off …

In this paper, the problem of resource allocation optimization is studied for a single-cell
multiuser cognitive radio network in the presence of primary user networks. The spectral …

We consider a secondary usage of spectrum scenario where a secondary network coexists
and/or shares the radio spectrum with a primary network to which the spectrum is licensed …

Spectrum scarcity is the major challenge facing all parties working in the
telecommunications industry. As recently shown, the main problem of spectrum …

This paper studies optimal bandwidth and power allocation in a cognitive radio network
where multiple secondary users (SUs) share the licensed spectrum of a primary user (PU) …

This paper provides an overview of cognitive radio (CR) networks, with focus on the recent
advances in resource allocation techniques and the CR networks architectural design. The …

We consider a cognitive radio network in which a set of base stations make opportunistic
spectrum access to support fixed-location wireless subscribers within their cells. The …

We consider a cognitive radio network in which a set of base stations make opportunistic
unlicensed spectrum access to transmit data to their subscribers. As the spectrum of interest …