Secondary user access based on stochastic link estimation in cognitive radio with fibre-connected distributed antennas

	Secondary user access based on stochastic link estimation in cognitive radio with fibre-connected distributed antennas
	Ge, Wendong; Ji, Hong; Li, Xi; Leung, Victor C. M.
发表期刊	IET COMMUNICATIONS
	2013-05-21
卷号	7 期号:8;8 页码:731-737
文章类型	Article
摘要	In this study, the authors consider the application of a system architecture called cognitive radio (CR) with fibre-connected distributed antennas in IEEE 802.22 wireless regional area networks (WRANs) as it could bring the benefits of much shorter wireless transmission distances, lower transmission power and the possibility of utilising multi-antenna transmission techniques. In this architecture, the authors study the secondary user (SU) access problem in uplink, where the SU to primary user (PU) link estimation is subject to random errors because PU could not assist link estimation of SU. This SU access problem is divided into two parts: antenna selection and access control. Thus, first antenna selection problem is modelled as a restless bandit problem, which is solved by the primal-dual index heuristic algorithm based on first order relaxation. In addition, the access control problem is modelled as a stochastic knapsack (SASK) problem with random weight, and then relaxed to be a deterministic second order cone programming problem. With the deduced upper bound, the access control problem is solved by the branch and bound algorithm, which yields the SU access based on SASK scheme. Simulation results illustrate the significant performance improvement of SASK scheme, compared with existing SU access methods.
WOS标题词	Science & Technology ; Technology
关键词[WOS]	SYSTEMS
收录类别	SCI
语种	英语
WOS研究方向	Engineering
WOS类目	Engineering, Electrical & Electronic
WOS记录号	WOS:000321733800005
引用统计	被引频次：4[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ia.ac.cn/handle/173211/40892
专题	复杂系统认知与决策实验室_听觉模型与认知计算
推荐引用方式 GB/T 7714	Ge, Wendong,Ji, Hong,Li, Xi,et al. Secondary user access based on stochastic link estimation in cognitive radio with fibre-connected distributed antennas[J]. IET COMMUNICATIONS,2013,7(8;8):731-737.
APA	Ge, Wendong,Ji, Hong,Li, Xi,&Leung, Victor C. M..(2013).Secondary user access based on stochastic link estimation in cognitive radio with fibre-connected distributed antennas.IET COMMUNICATIONS,7(8;8),731-737.
MLA	Ge, Wendong,et al."Secondary user access based on stochastic link estimation in cognitive radio with fibre-connected distributed antennas".IET COMMUNICATIONS 7.8;8(2013):731-737.