This paper presents new design formulations that aim at optimizing the performance of an
orthogonal frequency-division multiple-access (OFDMA) ad hoc cognitive radio network …

Efficient and fair resource allocation strategies are being extensively studied in current
research in order to address the requirements of future wireless applications. A novel …

Cognitive radio has received great attention recently for its ability to improve spectrum
efficiency by letting secondary users to access spectrum resource that is unoccupied by …

This paper investigates the problem of designing an efficient spectrum-allocation
mechanism in heterogeneous multicell coordinated cognitive radio networks (CRNs) under …

Due to the significantly increased demand for wireless connectivity in recent years, the
natural radio spectrum has become a very important and scarce resource. Since the …

This paper considers the problem of radio resource allocation in an orthogonal frequency-
division multiple access based cognitive radio (CR) network that opportunistically operates …

The rapid growth of wireless communication technology has resulted in the increasing
demand on spectrum resources. However, according to a recent study, most of the allocated …

In this paper, we present a distributed resource allocation mechanism in cognitive radio
networks, based on a new coopetition methodology, which combines advantages of nodes' …

We consider a multichannel cognitive radio network where multiple secondary users (SUs)
share a single channel and where multiple channels are simultaneously used by a single …

Cognitive Radio (CR) is an attractive technology to deal with current spectrum scarcity
problem, while cooperative relay can make distributed receivers benefit from spatial diversity …