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Optimized Cooperative Spectrum Sensing in Cognitive Radio Networks Based on Dynamic Threshold Energy Detector
Ritu,  Ameeta Seehra
Cognitive radio is a seemly hopeful technology for future. Spectrum sensing is the most important function of cognitive radio. Most of the spectrums sensing techniques proposed become dysfunctional at lower signal to noise ratio environments. This paper proposes a reliable spectrum sensing algorithm for cooperative cognitive network. A dynamic threshold updating method is developed for which threshold changes with the environmental noise impact. Energy detector will be used as basic block to development. The reliability of sensing technique is evaluated in terms of probability of error and minimum signal to ratio it tolerates. The work includes study of existing spectrum sensing techniques that are single threshold energy detector and double threshold energy detector and their implementation in the cooperative sensing environment. Finally they are juxtaposed in cooperative environment. Optimal number of cognitive radios required in the decision making process is also calculated.
Keywords- Cognitive Radio, Spectrum Sensing, Dynamic Threshold, Cooperative Sensing, Optimized Sensing
Unique Identification Number - IJEDR1601004Page Number(s) - 17-20Pubished in - Volume 4 | Issue 1 | January 2016DOI (Digital Object Identifier) -    Publisher - IJEDR (ISSN - 2321-9939)
Cite this Article
Ritu,  Ameeta Seehra,   "Optimized Cooperative Spectrum Sensing in Cognitive Radio Networks Based on Dynamic Threshold Energy Detector"
, International Journal of Engineering Development and Research (IJEDR), ISSN:2321-9939, Volume.4, Issue 1, pp.17-20, January 2016, Available at :http://www.ijedr.org/papers/IJEDR1601004.pdf