Cognitive radio networking and communications: an overview

Cognitive radio (CR) is the enabling technology for supporting dynamic spectrum access: the policy that addresses the spectrum scarcity problem that is encountered in many countries. Thus, CR is widely regarded as one of the most promising technologies for future wireless communications. To make rad...

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Bibliographic Details
Published in:IEEE transactions on vehicular technology Vol. 60; no. 7; pp. 3386 - 3407
Main Authors: Liang, Ying-Chang, Chen, Kwang-Cheng, Li, Geoffrey Ye, Mahonen, Petri
Format: Journal Article
Language:English
Published: New York, NY IEEE 01.09.2011
Institute of Electrical and Electronics Engineers
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects:
Access control
Antennas
Applied sciences
Chromium nitride
Cognitive radio (CR)
cognitive radio networks (CRNs)
Design engineering
Detection
Detection, estimation, filtering, equalization, prediction
dynamic resource management
dynamic spectrum access (DSA)
Economics
Exact sciences and technology
Information, signal and communications theory
Interference
Networks
Operation, maintenance, reliability
Policies
Radio
Radio transmitters
Radiocommunication specific techniques
Radiocommunications
Radios
Receivers
Sensors
Signal and communications theory
Signal processing
Signal to noise ratio
Signal, noise
spectrum sensing
spectrum sharing
Studies
Systems, networks and services of telecommunications
Telecommunications
Telecommunications and information theory
Wireless networks
Access control
Circuit design
Networking
Wireless telecommunication
Signal theory
Review
dynamic spectrum access (DSA)
Transceiver
Spectrum analysis
Security of data
Reconfigurable architectures
dynamic resource management
Antenna
spectrum sharing
Cognitive radio (CR)
cognitive radio networks (CRNs)
Scheduling
Radiofrequency
Game theory
Communication theory
Electrical network
spectrum sensing
Signal processing
Wireless network
Software
Planning
Access protocol
Signal analysis
Radio communication
Software radio
ISSN:0018-9545, 1939-9359
Online Access:Get full text
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Description
Summary:Cognitive radio (CR) is the enabling technology for supporting dynamic spectrum access: the policy that addresses the spectrum scarcity problem that is encountered in many countries. Thus, CR is widely regarded as one of the most promising technologies for future wireless communications. To make radios and wireless networks truly cognitive, however, is by no means a simple task, and it requires collaborative effort from various research communities, including communications theory, networking engineering, signal processing, game theory, software-hardware joint design, and reconfigurable antenna and radio-frequency design. In this paper, we provide a systematic overview on CR networking and communications by looking at the key functions of the physical (PHY), medium access control (MAC), and network layers involved in a CR design and how these layers are crossly related. In particular, for the PHY layer, we will address signal processing techniques for spectrum sensing, cooperative spectrum sensing, and transceiver design for cognitive spectrum access. For the MAC layer, we review sensing scheduling schemes, sensing-access tradeoff design, spectrum-aware access MAC, and CR MAC protocols. In the network layer, cognitive radio network (CRN) tomography, spectrum-aware routing, and quality-of-service (QoS) control will be addressed. Emerging CRNs that are actively developed by various standardization committees and spectrum-sharing economics will also be reviewed. Finally, we point out several open questions and challenges that are related to the CRN design.
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ISSN:0018-9545
1939-9359
DOI:10.1109/TVT.2011.2158673