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Supervised by Ministry of Industry and Information Technology of The People's Republic of China Sponsored by Harbin Institute of Technology Editor-in-chief Yu Zhou ISSNISSN 1005-9113 CNCN 23-1378/T

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Related citation:Xin Liu,Xiu-Hua Li,Xue-Zhi Tan.Multi-slots Wideband Cooperative Spectrum Sensing Based on Weighed Data Fusion in Cognitive Radio[J].Journal of Harbin Institute Of Technology(New Series),2013,20(1):1-7.DOI:10.11916/j.issn.1005-9113.2013.01.001.
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Multi-slots Wideband Cooperative Spectrum Sensing Based on Weighed Data Fusion in Cognitive Radio
Author NameAffiliation
Xin Liu Communication Research Centre, Harbin Institute of Technology, Harbin 150001, China 
Xiu-Hua Li Communication Research Centre, Harbin Institute of Technology, Harbin 150001, China 
Xue-Zhi Tan Communication Research Centre, Harbin Institute of Technology, Harbin 150001, China 
Abstract:
In order to avoid the interference to the primary user(PU), in this paper Cognitive Radio (CR) periodically senses the presence of PU, and during one period, CR can sense all the sub-channels based on weighed data fusion and then use all the idle channels decided by the coordinator. The local sensing time of CR is divided into multi-slots in which CR can sense any sub-channel. Through reasonably allocating the sensing slots and users by mathematic optimization, the proposed algorithm can improve the total throughput of CR. The optimization problem of the proposed scheme which seeks to maximize the throughput subject to the constraint of the detected performance of each sub-channel is proposed in order to choose the optimum local sense time and the number of the cooperative CRs. The simulation results indicate that the proposed scheme can obtain higher throughput than the conventional single-channel sense, and there are the optimum local sense time and the number of cooperative CRs to make the throughput reach maximum.
Key words:  cognitive radio  energy detection  cooperative detection  weighed data fusion  thoughput
DOI：10.11916/j.issn.1005-9113.2013.01.001
Clc Number:TN911.23
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