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Cooperative wideband spectrum sensing and localization using radio frequency sensor networks

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Author
SoÌ nmezer, Volkan
Date
2009-09
Advisor
Tummala, Murali
Jenn, David.
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Abstract
This thesis implements spectrum sensing and localization tasks using a radio frequency sensor network and analyzes the performance of this implementation through simulation. A sensor network based cooperative wideband spectrum sensing and localization scheme is proposed for the implementation of the tasks. In the proposed scheme, wavelet-based multi-resolution spectrum sensing and received signal strengthbased localization methods, which were originally proposed for cognitive radio applications, are adapted to radio frequency sensor networks. For cooperation of the nodes in the proposed scheme, a new three-bit hard combination technique is developed. A simulation model is created in MATLAB programming language to implement the proposed scheme and to analyze its simulation performance. The results of the simulation show that the proposed sensor network based cooperative wideband spectrum sensing and localization scheme is appropriate for radio frequency sensor networks and the proposed three-bit hard combination scheme is superior to the traditional hard combination schemes in terms of false alarm reduction.
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http://hdl.handle.net/10945/4612
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