Multichannel cooperative sensing for cognitive radio with users owning heterogeneous sensing ability

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	Multichannel cooperative sensing for cognitive radio with users owning heterogeneous sensing ability
	Ge, Wendong1,2 ; Ji, Hong 1; Li, Xi 1
刊名	INTERNATIONAL JOURNAL OF COMMUNICATION SYSTEMS
	2014-12-01
卷号	27 期号:12 页码:3884-3900
关键词	cognitive radio cooperative sensing weapon target assignment branch and bound
英文摘要	Multichannel cooperative sensing (MCS) is an effective method for dynamic spectrum access in cognitive radio networks. In contrast to most existing work on MCS that considered secondary users with homogeneous sensing ability, this paper studies the MCS problem for secondary users with heterogeneous sensing ability in terms of sensing accuracy. We further take into account different parameters of primary channels such as bandwidth, probability of being idle in each sensing period, and frequency selective fading at the sensing receiver. The MCS problem is formulated as a weapon target assignment problem, where more sensing resources are assigned to channels that are more valuable. This weapon target assignment problem is transformed to an integer generalized network flow problem with convex flow costs to obtain the lower bound solution, and then solved by the branch and bound algorithm with this bound to yield the exact scheme. To reduce computational complexity, a heuristic scheme is also proposed, which has approximate performance compared with the exact scheme. Finally, extensive simulation results for different scenarios illustrate the performance improvements of the proposed schemes over the existing scheme. Copyright (c) 2013 John Wiley & Sons, Ltd.
WOS标题词	Science & Technology ; Technology
类目[WOS]	Engineering, Electrical & Electronic ; Telecommunications
研究领域[WOS]	Engineering ; Telecommunications
关键词[WOS]	TARGET ASSIGNMENT PROBLEM ; NETWORKS ; ALGORITHMS
收录类别	SCI
语种	英语
WOS记录号	WOS:000345917800025
内容类型	期刊论文
源URL	[http://ir.ia.ac.cn/handle/173211/3308]
专题	数字内容技术与服务研究中心_听觉模型与认知计算
作者单位	1.Beijing Univ Posts & Telecommun, Beijing 100876, Peoples R China 2.Chinese Acad Sci, Inst Automat, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Ge, Wendong,Ji, Hong,Li, Xi. Multichannel cooperative sensing for cognitive radio with users owning heterogeneous sensing ability[J]. INTERNATIONAL JOURNAL OF COMMUNICATION SYSTEMS,2014,27(12):3884-3900.
APA	Ge, Wendong,Ji, Hong,&Li, Xi.(2014).Multichannel cooperative sensing for cognitive radio with users owning heterogeneous sensing ability.INTERNATIONAL JOURNAL OF COMMUNICATION SYSTEMS,27(12),3884-3900.
MLA	Ge, Wendong,et al."Multichannel cooperative sensing for cognitive radio with users owning heterogeneous sensing ability".INTERNATIONAL JOURNAL OF COMMUNICATION SYSTEMS 27.12(2014):3884-3900.