MOAR: A Multi-Channel Opportunistic Auto-Rate Media Access Protocol for Ad Hoc Networks
BROADNETS '04 Proceedings of the First International Conference on Broadband Networks
Software-defined radio: basics and evolution to cognitive radio
EURASIP Journal on Wireless Communications and Networking
Modeling and analysis of interference in listen-before-talk spectrum access schemes
International Journal of Network Management
Utilization and fairness in spectrum assignment for opportunistic spectrum access
Mobile Networks and Applications
NeXt generation/dynamic spectrum access/cognitive radio wireless networks: a survey
Computer Networks: The International Journal of Computer and Telecommunications Networking
Cognitive Radio, Software Defined Radio, and Adaptive Wireless Systems (Signals and Communication Technology)
Fundamental design tradeoffs in cognitive radio systems
TAPAS '06 Proceedings of the first international workshop on Technology and policy for accessing spectrum
SNPD '07 Proceedings of the Eighth ACIS International Conference on Software Engineering, Artificial Intelligence, Networking, and Parallel/Distributed Computing - Volume 02
Cognitive radio network architecture: part I -- general structure
Proceedings of the 2nd international conference on Ubiquitous information management and communication
Spectrum characterization for opportunistic cognitive radio systems
MILCOM'06 Proceedings of the 2006 IEEE conference on Military communications
Spectrum pooling: an innovative strategy for the enhancement of spectrum efficiency
IEEE Communications Magazine
Spectrum sensing in cognitive radio networks: requirements, challenges and design trade-offs
IEEE Communications Magazine
A survey on spectrum management in cognitive radio networks
IEEE Communications Magazine
Toward secure distributed spectrum sensing in cognitive radio networks
IEEE Communications Magazine
Cognitive radio: brain-empowered wireless communications
IEEE Journal on Selected Areas in Communications
Spectral efficiency of cognitive radio networks under interference constraint and QoS guarantees
Computers and Electrical Engineering
Review: Cognitive radio network security: A survey
Journal of Network and Computer Applications
Computers and Electrical Engineering
Cross layer design for equal and unequal loss protection frameworks in cognitive radio networks
Computers and Electrical Engineering
Coding techniques to mitigate out-of-band radiation in high data rate OFDM-based cognitive radios
Computers and Electrical Engineering
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Due to the increasing demand for new wireless services and applications as well as the increasing number of wireless users, the available spectrum is becoming increasingly scarce. As a result, the federal communications commission (FCC) has been investigating new ways to manage the radio frequency resources. Cognitive radio (CR) technology is an innovative radio design philosophy which aims to increase spectrum utilization by exploiting unused and under-utilized spectrum in dynamically changing environments. The basic idea is to let unlicensed users use licensed frequencies, provided they can guarantee minimum interference perceived by the primary licensed users. However, allowing opportunistic use of the wireless spectrum creates new problems such as peaceful coexistence with other wireless technologies as well as understanding the influence of interference that each of these networks can create. In this article, we discuss the key CR operations and principles, and then discuss some of the main challenges and research opportunities that exist in CR-based emerging wireless networks.