naa a22 4500 510797997 CHVBK 20180411083343.0 cr unu---uuuuu 180411e20131001xx s 000 0 eng 10.1007/s11277-013-1129-5 doi (NATIONALLICENCE)springer-10.1007/s11277-013-1129-5 Optimization of Linear Cooperation in Spectrum Sensing Over Correlated Log-normal Shadow Fading Channels [Elektronische Daten] [V. Jamali, N. Reisi, M. Ahmadian, S. Salari] The objective of cooperative spectrum sensing is to collaboratively detect the presence of the primary user by the aid of multiple secondary users. It is known that the performance of such a framework substantially depends on the fading assumption. In this paper, we propose an advanced framework for linear cooperative spectrum sensing in cognitive radio networks over correlated log-normal shadow fading channels. Considering the realistic sensing and reporting channels which are not addressed in similar works, motivates us to propose a novel approximation for correlated log-normal sum based on moment generating function calculation and moment matching method. Furthermore, the linear cooperative spectrum sensing coefficients are computed based on the optimization of the deflection criterion. This results in a framework with reasonable complexity which is suitable for practical applications. Simulation results show the excellent agreement between the exact and approximated statistics and the superior performance compared with conventional equally gain combiner. Springer Science+Business Media New York, 2013 Cooperative spectrum sensing nationallicence Shadow fading nationallicence Log-normal sum approximation nationallicence Deflection criterion nationallicence Jamali V. Faculty of Electrical and Computer Engineering, K. N. Toosi University of Technology, PO. Box 16315-1355, Tehran, Iran aut Reisi N. Faculty of Electrical and Computer Engineering, K. N. Toosi University of Technology, PO. Box 16315-1355, Tehran, Iran aut Ahmadian M. Faculty of Electrical and Computer Engineering, K. N. Toosi University of Technology, PO. Box 16315-1355, Tehran, Iran aut Salari S. Faculty of Electrical and Computer Engineering, K. N. Toosi University of Technology, PO. Box 16315-1355, Tehran, Iran aut Wireless Personal Communications Springer US; http://www.springer-ny.com 72/3(2013-10-01), 1691-1706 0929-6212 72:3<1691 2013 72 11277 https://doi.org/10.1007/s11277-013-1129-5 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11277-013-1129-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Jamali V. Faculty of Electrical and Computer Engineering, K. N. Toosi University of Technology, PO. Box 16315-1355, Tehran, Iran aut NATIONALLICENCE 700 1- Reisi N. Faculty of Electrical and Computer Engineering, K. N. Toosi University of Technology, PO. Box 16315-1355, Tehran, Iran aut NATIONALLICENCE 700 1- Ahmadian M. Faculty of Electrical and Computer Engineering, K. N. Toosi University of Technology, PO. Box 16315-1355, Tehran, Iran aut NATIONALLICENCE 700 1- Salari S. Faculty of Electrical and Computer Engineering, K. N. Toosi University of Technology, PO. Box 16315-1355, Tehran, Iran aut NATIONALLICENCE 773 0- Wireless Personal Communications Springer US; http://www.springer-ny.com 72/3(2013-10-01), 1691-1706 0929-6212 72:3<1691 2013 72 11277 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer