Joint Optimization of both m and K for the m-out-of-K Rule for Cooperative Spectrum Sensing

Conference: European Wireless 2018 - 24th European Wireless Conference
05/02/2018 - 05/04/2018 at Catania, Italy

Proceedings: European Wireless 2018

Pages: 6Language: englishTyp: PDF

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Banavathu, Narasimha Rao; Khan, Mohammed Zafar Ali (Department of Electrical Engineering, Indian Institute of Technology (IIT), Hyderabad, India)

In this paper, we present closed form expressions that jointly optimizes the fusion rule (m) and the number of secondary users (K) for the m-out-of-K rule by minimizing the Bayes risk at the fusion center (FC) in the presence of erroneous reporting channels and then show that various existing and new results are special cases of the proposed solution. The results are applicable to any detector used in cooperative spectrum sensing (CSS). Numerical results are presented using energy detector (ED) which shows that CSS obtained using joint optimized values of m and K results in significant performance improvement.