Making the best of limited resources: differential sensing in cognitive PANs
Proceedings of the 11th international symposium on Modeling, analysis and simulation of wireless and mobile systems
Hard decision combining-based cooperative spectrum sensing in cognitive radio systems
Proceedings of the 2009 International Conference on Wireless Communications and Mobile Computing: Connecting the World Wirelessly
Pipelined cooperative spectrum sensing in cognitive radio networks
WCNC'09 Proceedings of the 2009 IEEE conference on Wireless Communications & Networking Conference
Adaptive channel searching scheme for cooperative spectrum sensing in cognitive radio networks
WCNC'09 Proceedings of the 2009 IEEE conference on Wireless Communications & Networking Conference
Collaborative cyclostationary spectrum sensing for cognitive radio systems
IEEE Transactions on Signal Processing
Coverage in multi-antenna two-tier networks
IEEE Transactions on Wireless Communications
Optimization and scheduling of spectrum sensing periods in heterogeneous wireless networks
WiCOM'09 Proceedings of the 5th International Conference on Wireless communications, networking and mobile computing
WiCOM'09 Proceedings of the 5th International Conference on Wireless communications, networking and mobile computing
Distributed spectrum sensing for cognitive radio networks by exploiting sparsity
IEEE Transactions on Signal Processing
Spectrum sensing issues in cognitive radio networks
ISCIT'09 Proceedings of the 9th international conference on Communications and information technologies
EURASIP Journal on Advances in Signal Processing - Special issue on advanced signal processing for cognitive radio networks
Coverage in tiered cellular networks with spatial diversity
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
Efficient cooperative spectrum sensing in cognitive radio
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
Detecting low-power primary signals via distributed sensing to support opportunistic spectrum access
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
Throughput-efficient dynamic coalition formation in distributed cognitive radio networks
EURASIP Journal on Wireless Communications and Networking
End-to-end protocols for Cognitive Radio Ad Hoc Networks: An evaluation study
Performance Evaluation
Cooperative spectrum sensing in cognitive radio networks: A survey
Physical Communication
Influence of spatial statistics of spectrum use on the performance of cognitive wireless networks
Proceedings of the 15th ACM international conference on Modeling, analysis and simulation of wireless and mobile systems
Wireless Personal Communications: An International Journal
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Opportunistic unlicensed access to the (temporarily) unused frequency bands across the licensed radio spectrum is currently being investigated as a means to mitigate the spectrum scarcity. Such opportunistic access calls for the implementation of safeguards so that the ongoing licensed operations are not interfered with. Among different candidates, sensing-based access, where the secondary (unlicensed) users transmit if they sense the primary (licensed) band to be free, is particularly appealing due to its low deployment cost and its compatibility with legacy primary systems. Incorporating spectral awareness functionality into the radio transceivers is a major step towards the realization of the cognitive radios. In this paper performance of spectrum-sensing cognitive radios is studied under channel fading. In particular, it is shown that due to the uncertainty resulting from fading, local signal processing alone may be inadequate to meet the performance requirements. To remedy this issue, cooperation among secondary users is proposed and studied in this paper. Moreover, we characterize and study a tradeoff between local processing and cooperation, which should be balanced in order to maximize the spectrum utilization. Copyright © 2007 John Wiley & Sons, Ltd.