Dynamic spectrum policies combined with software defined radio are powerful means to
improve the overall spectral efficiency allowing the development of new wireless services …

Currently, the radio spectrum is statically allocated and divided between licensed and
unlicensed frequencies. Due to this inflexible policy, some frequency bands are growing in …

Maritime networks establish wireless multi-hop networks to provide wireless broadband
service at sea, connecting various kinds of ships, maritime buoys, and beacons. The …

The Cognitive Radio and the Cognitive Radio Networks have recently become one of the
most intensively studied paradigms in wireless communications. The main distinctive …

New wireless network paradigms will demand higher spectrum use and availability to cope
with emerging data-hungry devices. Traditional static spectrum allocation policies cause …

Cognitive radio (CR) is a promising wireless technology that provides efficient spectral
usage. Medium Access Control (MAC) has an important role in several cognitive radio …

The tremendous growth in ubiquitous low-cost wireless applications that utilize the
unlicensed spectrum bands has laid increasing stress on the limited and scarce radio …

The concept of a multi-interface multi-channel cognitive radio is both novel and promising.
Indeed, such opportunistic access to the spectrum, over multiple channels in a simultaneous …

Cognitive radio ad hoc networks (CRAHNs) consist of autonomous nodes that operate in ad
hoc mode and aim at efficient utilization of spectrum resources. Usually, the cognitive nodes …

Cognitive Radio Networks (CRN) have enabled us to efficiently reuse the underutilized radio
spectrum. The MAC protocol in CRN defines the spectrum usage by sharing the channels …