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	Channel capacity optimization via exploiting multi-SU coexistence in Cognitive Radio Networks
	Lu, Dianjie; Huang, XiaoXia; Lu, Jing; Fan, Jianping
	2011
会议名称	IEEE Wireless Communications and Networking Conference (WCNC)
会议地点	Cancun, MEXICO
英文摘要	In Cognitive Radio Networks (CRNs), when the Primary Users (PUs) appear, the SUs have to evacuate the licensed spectrum in use or reduce the transmit power so that no harmful interference is introduced to the PUs. In this paper, we explore the multiple Secondary Users (SUs) coexistence system in CRNs based on power control mechanism and interference temperature model. We propose an optimal solution that can maximize the channel capacity and minimize the spectrum handover overhead, constrained by the accumulated interference of both the SUs-to-PU and SUs-to-SUs. We formulate this problem as a non-linear optimizationproblem and propose a heuristic algorithm to solve it efficiently. Experimental results show that compared with two alternative approaches, our algorithm can improve the usage of the spectrum by up to 51% (with a random approach) and up to 278% (with a conservative approach). © 2011 IEEE.(16 refs)
收录类别	EI
语种	英语
内容类型	会议论文
源URL	[http://ir.siat.ac.cn:8080/handle/172644/3617]
专题	深圳先进技术研究院_数字所
作者单位	2011
推荐引用方式 GB/T 7714	Lu, Dianjie,Huang, XiaoXia,Lu, Jing,et al. Channel capacity optimization via exploiting multi-SU coexistence in Cognitive Radio Networks[C]. 见:IEEE Wireless Communications and Networking Conference (WCNC). Cancun, MEXICO.

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