Spectrum Sensing Framework for Cognitive Radio Networks

Authors:
Liljana Gavrilovska;Vladimir Atanasovski
Affiliations:
Faculty of Electrical Engineering and Information Technologies, Ss Cyril and Methodius University in Skopje, Skopje, Macedonia 1000;Faculty of Electrical Engineering and Information Technologies, Ss Cyril and Methodius University in Skopje, Skopje, Macedonia 1000
Venue:
Wireless Personal Communications: An International Journal
Year:
2011

Citing 12
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Abstract

Spectrum sensing feature of cognitive radio devices represents a cornerstone characteristic facilitating real-time and accurate spectrum occupancy measurements in cognitive radio networks. It practically enables the cognitive radio devices to detect vacant spectrum holes and use them for their communication purposes. There are numerous spectrum sensing methods proposed in the literature ranging from local based ones to cooperative strategies among several devices increasing the confidence level of the detected spectrum. This paper gives a general spectrum sensing framework for cognitive radio networks, classifies and explores different spectrum sensing techniques and approaches and shows practical examples, from authors' own experience, of realized spectrum sensing engines and strategies along with some obtained results.