Cognitive radio (CR) is the enabling technology for supporting dynamic spectrum access:
the policy that addresses the spectrum scarcity problem that is encountered in many …

In the past decade, cognitive radio and cooperative communication techniques have been
proposed in the literature for efficiently utilizing the radio resources. Cognitive radio is an …

Investigated is the outage performance of cognitive wireless relay networks in a fading
environment, where the secondary users including the source and relays may take …

Cognitive radio ad hoc networks (CRAHNs) constitute a viable solution to solve the current
problems of inefficiency in the spectrum allocation, and to deploy highly reconfigurable and …

In this paper, we consider a relay-assisted wideband cognitive-radio (CR) system under the
assumption that the frequency band chosen by the CR relay network for unlicensed …

In this paper, we study the joint relay selection and discrete power control problem for
cognitive relay networks via a game-theoretic approach subject to the interference power …

We develop robust resource-allocation schemes for a cognitive radio network (CRN), where
the secondary users (SUs) try to communicate with each other from different small cell …

We propose an energy-efficient Distributed Spectrum Sensing (DSS) scheme, called cluster-
and-forward based DSS scheme, for our developed two-tier hierarchical cognitive radio …

This paper considers a cooperative orthogonal frequency division multiple access (OFDMA)-
based cognitive radio network where the primary system leases some of its subchannels to …

In this study, the author investigates the outage performance of cognitive relay networks, in
which the best relay is selected based on full and partial channel state information …