Today's wireless networks are characterized by a fixed spectrum assignment policy.
However, a large portion of the assigned spectrum is used sporadically and geographical …

Are you involved in designing the next generation of wireless networks? With spectrum
becoming an ever scarcer resource, it is critical that new systems utilize all available …

Traditionally, interference protection is guaranteed through a policy of spectrum licensing,
whereby wireless systems get exclusive access to spectrum. This is an effective way to …

Throughput maximization is one of the main challenges in cognitive radio ad hoc networks,
where the availability of local spectrum resources may change from time to time and hop by …

The widespread deployment of various networking technologies, coupled with the
exponential increase in end-user data demand, have led to the proliferation of multi-homed …

Cognitive radio networks (CRNs) have emerged as advanced and promising paradigm to
exploit the existing wireless spectrum opportunistically. It is crucial for users in CRNs to …

A number of studies have shown the abundance of unused spectrum in the TV bands. This
is in stark contrast to the overcrowding of wireless devices in the ISM bands. A recent trend …

In this paper, we provide a survey of dynamic spectrum access techniques. Various
approaches envisioned for dynamic spectrum access are broadly categorized under three …

FCC has proposed to allow unlicensed operations in the TV broadcast bands. This portion of
the spectrum has several desirable properties for more robust data communication as …

Cognitive radio has been proposed in recent years to promote the spectrum utilization by
exploiting the existence of spectrum holes. The heterogeneity of both spectrum availability …