In a cognitive radio (CR) network, cooperative spectrum sensing plays an important role in
ensuring the quality of service (QoS) of primary users (PUs) and improving spectral …

In this paper, we study the channel access problem of vehicles in a cognitive radio vehicular
network, where each vehicle opportunistically accesses the channel resources of the …

Radio spectrum is a scarce and precious natural resource that is significantly underutilized
with current fixed spectrum-licensing policies [1]. This has inspired the development of …

Vehicular ad hoc networks offer safety and travel efficiency by sharing information between
vehicles and roadside units. The performance of current proposed standard can suffer when …

The tradeoff between the interference to primary users'(PUs) and secondary users'(SUs)
throughput is of great importance in cognitive radio networks. Both imperfect spectrum …

In hardware-constrained cognitive radio (CR) ad hoc networks, secondary users (SUs) with
limited sensing capabilities strive to discover and share available spectrum resources …

To meet the dramatically increasing demands for vehicular communications, cognitive
vehicular networks have been proposed to broaden the vehicular communication bandwidth …

This paper presents experimental results with the Cognitive Detection, Identification and
Ranging (CODIR) testbed set up in a congested spectrum and jammed environment. Band …

Recent advancement in vehicular wireless applications is also a major contributing factor in
spectrum scarcity. Cognitive radio system is a mechanism which allows unlicensed cognitive …

This letter focuses on an energy-efficient hybrid spectrum access scheme in a vehicle-to-
infrastructure uplink communication scenario in cognitive vehicular ad hoc networks …