naa a22 4500 510792251 CHVBK 20180411083324.0 cr unu---uuuuu 180411e20130801xx s 000 0 eng 10.1007/s11277-012-0961-3 doi (NATIONALLICENCE)springer-10.1007/s11277-012-0961-3 Cooperative Spectrum Sensing Scheme with Hard Decision Based on Location Information in Cognitive Radio Networks [Elektronische Daten] [Juan Zhou, Ying Shen, Shihai Shao, Youxi Tang] Without an efficient way to achieve the reliability of the decision, the implementation of weighted data fusion is limited in the hard decision combination for cooperative spectrum sensing. To address this problem, a new cooperative spectrum sensing scheme based on the location information of the primary user (PU) and cognitive radio (CR) is proposed. In the new scheme, depending on the location information, the channel condition between the PU and each CR is obtained at the fusion center (FC), with which the local sensing reliability is first achieved. Then we calculate the transmission reliability between the CR and FC. Based on both the local sensing reliability and the transmission reliability, the combining weighting factor is determined for optimal data fusion. On the basis of this proposed scheme, we study the global sensing false alarm and detection probabilities, derive the expressions to obtain the optimal local sensing threshold, and perform an error analysis that demonstrates the impact of imperfect channel knowledge. Using both analytical and simulation methods, we find that the proposed scheme achieves better performance compared with the conventional logical fusion rules in the hard decision combination for cooperative spectrum sensing. Springer Science+Business Media New York, 2012 Cognitive Radio Networks nationallicence Cooperative spectrum sensing nationallicence Hard decision nationallicence Zhou Juan National Key Laboratory of Science and Technology on Communications, University of Electronic Science and Technology of China, Chengdu, China aut Shen Ying National Key Laboratory of Science and Technology on Communications, University of Electronic Science and Technology of China, Chengdu, China aut Shao Shihai National Key Laboratory of Science and Technology on Communications, University of Electronic Science and Technology of China, Chengdu, China aut Tang Youxi National Key Laboratory of Science and Technology on Communications, University of Electronic Science and Technology of China, Chengdu, China aut Wireless Personal Communications Springer US; http://www.springer-ny.com 71/4(2013-08-01), 2637-2656 0929-6212 71:4<2637 2013 71 11277 https://doi.org/10.1007/s11277-012-0961-3 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11277-012-0961-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Zhou Juan National Key Laboratory of Science and Technology on Communications, University of Electronic Science and Technology of China, Chengdu, China aut NATIONALLICENCE 700 1- Shen Ying National Key Laboratory of Science and Technology on Communications, University of Electronic Science and Technology of China, Chengdu, China aut NATIONALLICENCE 700 1- Shao Shihai National Key Laboratory of Science and Technology on Communications, University of Electronic Science and Technology of China, Chengdu, China aut NATIONALLICENCE 700 1- Tang Youxi National Key Laboratory of Science and Technology on Communications, University of Electronic Science and Technology of China, Chengdu, China aut NATIONALLICENCE 773 0- Wireless Personal Communications Springer US; http://www.springer-ny.com 71/4(2013-08-01), 2637-2656 0929-6212 71:4<2637 2013 71 11277 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer