Neural networks for pattern recognition
Neural networks for pattern recognition
ISPAN '00 Proceedings of the 2000 International Symposium on Parallel Architectures, Algorithms and Networks
Proceedings of the 5th ACM international symposium on Mobile ad hoc networking and computing
DIMSUMNet: New Directions in Wireless Networking Using Coordinated Dynamic Spectrum Access
WOWMOM '05 Proceedings of the Sixth IEEE International Symposium on World of Wireless Mobile and Multimedia Networks
Interference temperature: a metric for dynamic spectrum utilization
International Journal of Network Management
Sensing-based opportunistic channel access
Mobile Networks and Applications
Model-based opportunistic channel access in dynamic spectrum access networks
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
EURASIP Journal on Advances in Signal Processing - Special issue on advanced signal processing for cognitive radio networks
Full length article: Proactive channel access in dynamic spectrum networks
Physical Communication
A Fittingness Factor-Based Spectrum Management Framework for Cognitive Radio Networks
Wireless Personal Communications: An International Journal
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Open Spectrum systems offer an attractive solution to the reuse of under-utilized licensed spectrum. Existing proposals take a reactive sense-and-avoid approach to impulsively reconfigure spectrum usage without any knowledge of future dynamics. We propose a proactive spectrum access approach where secondary users utilize past observations to build predictive models on spectrum availability, and intelligently plan channel usage to maximize utilization and minimize disruptions to primary users. Based on the characteristics of TV-broadcast, we develop a simple availability metric and apply a usability filter to eliminate unreliable channels with heavy and frequent appearance of primary users. Our experimental results show that the proactive approach can significantly reduce the number of disruptions. We also observe a clear tradeoff between the disruption rate and the throughput at secondary users. By varying the usability filter threshold, we can to control this tradeoff according to the constraints of primary users and the application requirements at secondary users.