Joint optimal sensing time and power allocation for multi-channel cognitive radio networks considering sensing-channel selection

查看全文 作　　者：YU [1]HuoGen;TANG [1]WanBin;LI [1]ShaoQian

机构地区：[1]National Key Laboratory of Science and Technology on Communications,University of Electronic Science and Technology of China

出　　处：《Science China(Information Sciences)》索引2014年第57卷第4期,共8页

基　　金：supported in part by High-tech R&D Program of China (863 Program) (Grant Nos. 2009AA011801, 2009AA012002);National Fundamental Research Program of China (Grant No. A1420080150);National Basic Research Program of China (973 Program) (Grant No. 2009CB320405);Nation Grand Special Science and Technology Project of China (Grant Nos. 2008ZX03005-001, 2009ZX03007-004, 2009ZX03005-002, 2009ZX03005004, 2010ZX03006-002);Foundation Project of National Key Laboratory of Science and Technology on Communications and Special Project on Broadband Wireless Access sponsored by Huawei Co., Ltd. 摘　　要：In this paper,we consider a multi-channel cognitive radio network(CRN)where each secondary user(SU)can only choose to sense a subset of channels.We formulate a joint optimization problem of sensingchannel selection,sensing time and power allocation under the constraints of average transmit power budget and average interference power budget,which maximizes the CRN’s total throughput.We propose a greedy algorithm to solve the joint optimization problem,which has much less computational complexity.Moreover,it is shown that the search space of the greedy algorithm can be further pruned.Finally,numerical results demonstrate that the greedy algorithm has comparable performance to the exhaustive search algorithm. 关键词：无线电网络通道选择感应时间功率分配传感多通道贪心算法优化问题

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Joint optimal sensing time and power allocation for multi-channel cognitive radio networks considering sensing-channel selection

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