naa a22 4500 510796664 CHVBK 20180411083339.0 cr unu---uuuuu 180411e20131201xx s 000 0 eng 10.1007/s11277-013-1244-3 doi (NATIONALLICENCE)springer-10.1007/s11277-013-1244-3 Cooperative Spectrum Sensing with Adaptive Double-Threshold Based Energy Detector in Cognitive Radio Networks [Elektronische Daten] [Ashish Bagwari, Geetam Tomar] Spectrum sensing is one of the key functionalities in the implementation of cognitive radio. It is used to sense the unused spectrum in an opportunistic manner. In this paper, we propose an energy detector with adaptive double-threshold for spectrum sensing, to optimize the detection performance at a fixed probability of false alarm $$(\text{ P }_\mathrm{f})$$ ( P f ) i.e. 0.1, which also overcomes sensing failure problem. In the present work, the detection threshold is made adaptive to the fluctuation of the received signal power in each local detector of cognitive radio (CR) user. Simulation results show that proposed scheme optimizes better detection performance and outperforms both conventional energy detector and cooperative spectrum sensing (CSS) method by 12.8 and 3.3% at $$-$$ − 8dB signal to noise ratio (SNR), respectively. While utilizing CSS with proposed adaptive double-threshold scheme, where each CR user use a double threshold detectors for local detection and send detection decisions to fusion center (FC) to give the final decision based on hard decision rule. It is further found that CSS with adaptive double-threshold improves detection performance around 26.8 and 7.6% as compare to CSS with single threshold and Hierarchical with quantization method at $$-$$ − 10dB SNR, respectively, under the case when a small number of sensing nodes are used in spectrum sensing. Springer Science+Business Media New York, 2013 Cognitive radio nationallicence Adaptive double-threshold nationallicence Fusion center nationallicence Cooperative spectrum sensing nationallicence Energy detector nationallicence Bagwari Ashish Electronics and Communication Engineering Department, Uttarakhand Technical University, Dehradun, India aut Tomar Geetam Electronics and Communication Engineering Department, University of Kent, Canterbury, UK aut Wireless Personal Communications Springer US; http://www.springer-ny.com 73/3(2013-12-01), 1005-1019 0929-6212 73:3<1005 2013 73 11277 https://doi.org/10.1007/s11277-013-1244-3 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11277-013-1244-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Bagwari Ashish Electronics and Communication Engineering Department, Uttarakhand Technical University, Dehradun, India aut NATIONALLICENCE 700 1- Tomar Geetam Electronics and Communication Engineering Department, University of Kent, Canterbury, UK aut NATIONALLICENCE 773 0- Wireless Personal Communications Springer US; http://www.springer-ny.com 73/3(2013-12-01), 1005-1019 0929-6212 73:3<1005 2013 73 11277 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer