Optimization of Cooperative Spectrum Sensing and Implementation on Software Defined Radios


D. Bielefeld, G. Fabeck, M. Zivkovic, R. Mathar,


        Reliable detection of primary user activity by spectrum sensing is a crucial issue of cognitive radio systems. The objective of cooperative spectrum sensing is to combine the detection results of multiple cognitive radios in order to maximize the probability of detecting unused spectrum while meeting a required reliability of detecting primary user activity. In this paper, a Kullback-Leibler distance-based optimization approach for the local decision thresholds of cooperative spectrum sensing is proposed. It is both computationally efficient and scalable with the number of cognitive radios. To validate the concept, real spectrum sensing results are used. The employed practical setup is based on software defined radio and detects a WiMAX-like OFDM signal. The presented numerical results illustrate the feasibility and effectiveness of the approach.

BibTEX Reference Entry 

	author = {Daniel Bielefeld and Gernot Fabeck and Milan Zivkovic and Rudolf Mathar},
	title = "Optimization of Cooperative Spectrum Sensing and Implementation on Software Defined Radios",
	pages = "1-5",
	booktitle = "3rd International Workshop on Cognitive Radio and Advanced Spectrum Management (CogART)",
	address = {Rome, Italy},
	month = Nov,
	year = 2010,
	hsb = hsb999910017850,


 Download paper  Download bibtex-file

This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights there in are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder.