naa a22 4500 510791565 CHVBK 20180411083321.0 cr unu---uuuuu 180411e20130701xx s 000 0 eng 10.1007/s11277-012-0843-8 doi (NATIONALLICENCE)springer-10.1007/s11277-012-0843-8 Secondary User Selection Scheme Using Adaptive Genetic Algorithms for Cooperative Spectrum Sensing Under Correlated Shadowing [Elektronische Daten] [Defeng Ren, Jianhua Ge, Jing Li] Cooperative spectrum sensing has been shown to be an effective approach to improve the detection performance by exploiting the spatial diversity among multiple secondary users (or unlicensed users). However, due to correlated shadowing and cooperation overhead in practical cognitive radio networks, it is desired to select an appropriate set of secondary users which have little correlation with each other to participate in cooperation so as to achieve the effective tradeoff between detection performance and cooperation overhead. In this paper, we first study the hypothesis testing model and detection performance of cooperative spectrum sensing under the correlated log-normal shadowing scenario. Afterwards, based on whether the false-alarm and missed-detection probabilities are constrained, three optimization problems are formulated to find the optimal set of secondary users participating in cooperation, which take into account the tradeoff between detection performance and cooperation overhead. Then the solutions using adaptive genetic algorithms are presented for the optimization problems. Finally, simulation experiments demonstrate that our proposed schemes are very effective. Springer Science+Business Media, LLC., 2012 Cooperative spectrum sensing nationallicence Cooperation overhead nationallicence Correlated shadowing nationallicence Secondary user selection nationallicence Genetic algorithm (GA) nationallicence Ren Defeng State Key Laboratory of Integrated Service Networks, Xidian University, Mailbox 87, No. 2 South Taibai Road, 710071, Xi'an, Shaanxi, China aut Ge Jianhua State Key Laboratory of Integrated Service Networks, Xidian University, Mailbox 87, No. 2 South Taibai Road, 710071, Xi'an, Shaanxi, China aut Li Jing State Key Laboratory of Integrated Service Networks, Xidian University, Mailbox 87, No. 2 South Taibai Road, 710071, Xi'an, Shaanxi, China aut Wireless Personal Communications Springer US; http://www.springer-ny.com 71/1(2013-07-01), 769-788 0929-6212 71:1<769 2013 71 11277 https://doi.org/10.1007/s11277-012-0843-8 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11277-012-0843-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Ren Defeng State Key Laboratory of Integrated Service Networks, Xidian University, Mailbox 87, No. 2 South Taibai Road, 710071, Xi'an, Shaanxi, China aut NATIONALLICENCE 700 1- Ge Jianhua State Key Laboratory of Integrated Service Networks, Xidian University, Mailbox 87, No. 2 South Taibai Road, 710071, Xi'an, Shaanxi, China aut NATIONALLICENCE 700 1- Li Jing State Key Laboratory of Integrated Service Networks, Xidian University, Mailbox 87, No. 2 South Taibai Road, 710071, Xi'an, Shaanxi, China aut NATIONALLICENCE 773 0- Wireless Personal Communications Springer US; http://www.springer-ny.com 71/1(2013-07-01), 769-788 0929-6212 71:1<769 2013 71 11277 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer