Cognitive radio (CR) technology will empower wireless devices with the capabilities to
dynamically exploit opportunities in both licensed and unlicensed spectra. Thus, the …

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 (CR) exploits underutilized licensed spectrums to improve its bandwidth
availability. Using CR technology, a node is able to adapt its transmission and reception …

This paper proposes a cross-layer based cognitive radio multichannel medium access
control (MAC) protocol with TDMA, which integrate the spectrum sensing at physical (PHY) …

This paper proposes a cluster-based distributed medium access control (CDMAC) protocol
for multichannel and multihop mobile cognitive radio ad hoc networks (CRAHNs) …

In wireless ad hoc networks, all nodes have equal right to access the medium. Hence, the
performance of this mode is mostly limited by traffic congestion. To alleviate such a problem …

Cognitive Radio (CR) is a novel and promising spectrum management technique which
aims to cope with the spectrum scarcity problem occurred in unlicensed bands and alleviate …

The development of mobile communication services has lead to the increase the use of
wireless spectrum. However, the persuasion of the overly crowded spectrum is not due to …

To enhance the usage of radio spectrum, a wireless network, named as the cognitive
wireless network, which allows the unlicensed users to scan and use idle radio spectrum …

Cognitive radio technology has emerged as the novel and effective approach to improve the
utilization of precious radio spectrum. Employing the cognitive radio technology, secondary …