Energy-Efficiency Maximization for Cooperative Spectrum Sensing in Cognitive Sensor Networks

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	Energy-Efficiency Maximization for Cooperative Spectrum Sensing in Cognitive Sensor Networks
	Zheng M(郑萌); Wu, Jinsong ; Yu HB(于海斌); Liang W(梁炜); Chen, Lin
刊名	IEEE Transactions on Green Communications and Networking
	2017
卷号	1 期号:1 页码:29-39
关键词	Cognitive radio spectrum sensing multiple-access channel analog computation energy efficiency
ISSN号	2473-2400
通讯作者	Yu HB(于海斌) ; Liang W(梁炜)
产权排序	1
中文摘要	Spectrum sensing is the prerequisite of opportunistic spectrum access in cognitive sensor networks (CSNs) as its reliability determines the success of transmission. However, spectrum sensing is an energy-consuming operation that needs to be minimized for CSNs due to resource limitations. This paper considers the case where the cognitive sensors cooperatively sense a licensed channel by using the CoMAC-based cooperative spectrum sensing (CSS) scheme to determine the presence of primary users. Energy efficiency (EE), defined as the ratio of the average throughput to the average energy consumption, is a very important performance metric for CSNs. We formulate an EE-maximization problem for CSS in CSNs subject to the constraint on the detection performance. In order to address the non-convex and non-separable nature of the formulated problem, we first find the optimal expression for the detection threshold and then propose an iterative solution algorithm to obtain an efficient pair of sensing time and the length of the modulated symbol sequence. Simulations demonstrate the convergence and optimality of the proposed algorithm. It is also observed in simulations that the combination of the CoMAC-based CSS scheme and the proposed algorithm yields much higher EE than conventional CSS schemes while guaranteeing the same detection performance.
收录类别	EI
语种	英语
内容类型	期刊论文
源URL	[http://ir.sia.cn/handle/173321/21230]
专题	沈阳自动化研究所_工业控制网络与系统研究室
作者单位	1.State Key Laboratory of Robotics, Shenyang 110016, China 2.Department of Electrical Engineering, Universidad de Chile-ao, Santiago, 837045, Chile 3.Laboratoire de Recherche en Informatique, University of Paris-Sud XI, Orsay, 91405, France 4.Key Laboratory of Networked Control Systems, Chinese Academy of Sciences, Shenyang 110016, China
推荐引用方式 GB/T 7714	Zheng M,Wu, Jinsong,Yu HB,et al. Energy-Efficiency Maximization for Cooperative Spectrum Sensing in Cognitive Sensor Networks[J]. IEEE Transactions on Green Communications and Networking,2017,1(1):29-39.
APA	Zheng M,Wu, Jinsong,Yu HB,Liang W,&Chen, Lin.(2017).Energy-Efficiency Maximization for Cooperative Spectrum Sensing in Cognitive Sensor Networks.IEEE Transactions on Green Communications and Networking,1(1),29-39.
MLA	Zheng M,et al."Energy-Efficiency Maximization for Cooperative Spectrum Sensing in Cognitive Sensor Networks".IEEE Transactions on Green Communications and Networking 1.1(2017):29-39.