Cognitive radios have emerged as a key enabler for opportunistic spectrum access, in order
to tackle the wireless spectrum scarcity and under utilization problems over the past two …

Opportunistic spectrum access (OSA) is a key technique enabling the secondary users
(SUs) in a cognitive radio (CR) network to transmit over the" spectrum holes" unoccupied by …

In this work, we address the spectrum utilization problem in cognitive radio (CR) networks, in
which a CR can only utilize spectrum opportunities when the channel is idle. One challenge …

We formulate and study a multi-user multi-armed bandit (MAB) problem for opportunistic
spectrum access (OSA) that exploits the temporal-spatial reuse of PU channels so that SUs …

In a cognitive radio network, opportunistic spectrum access (OSA) to the underutilized
spectrum involves not only sensing the spectrum occupancy but also probing the channel …

We design distributed spectrum sensing and access strategies for opportunistic spectrum
access (OSA) under an energy constraint on secondary users. Both the continuous and the …

We consider a cognitive radio network with multiple primary users (PUs) and one secondary
user (SU), where a spectrum server is utilized for scheduling the SU to transmit over one of …

This paper considers a scenario in which a secondary user (SU) opportunistically accesses
a channel allocated to some primary network (PN) that switches between idle and active …

In this paper, we consider a Cognitive Radio (CR) system where two type of users try to
access to the primary spectrum: a primary user (PU) owning the spectrum license and a …

With the increasing use of cognitive radio technology in vehicular communications, vehicles
will be enabled with cognitive radio in the future. Cognitive radio assisted vehicular networks …