Censoring-Based Relay Transmission for Achieving Energy Efficiency in Cognitive Radio Networks

doi:10.1155/2020/5104605

CSpace

	Censoring-Based Relay Transmission for Achieving Energy Efficiency in Cognitive Radio Networks
	Feng, Li 1,2; Sun, Jirong 1; Sun, Hua 1; Tang, Shengju 1
	2020
发表期刊	WIRELESS COMMUNICATIONS & MOBILE COMPUTING (IF:1.819[JCR-2019],1.445[5-Year])
ISSN	1530-8669
卷号	2020
摘要	Energy efficiency (EE) is critical to achieve cooperative sensing and transmission in relay-assisted cognitive radio networks (CRNs) with limited battery capacity. This paper proposes an energy-efficient cooperative transmission strategy with combined censoring report and spatial diversity in cooperative process, namely, censoring-based relay transmission (CRT). Specifically, secondary relays (SRs) take part in cooperative sensing with differential censoring to reduce energy consumption, and the best SR assists secondary transmission to enhance communication quality in transmission stage and thus to improve secondary transmission EE. First, we derived generalized-form expressions for detection probability, reporting probability, sensing energy, and expected throughput for CRT. Second, we investigate a mean EE-oriented maximization nonconvex problem by joint optimizing sensing duration and power allocation for secondary users under secondary outage probability and sensing performance constraints. With the aid of Jensen's inequality, an efficient cross-iteration algorithm with low complexity is proposed to obtain the suboptimal solutions, which is developed by golden segmentation search method. Finally, extensive simulations are conducted to evaluate the performance of CRT. The results show significant improvements of SUs' EE compared with traditional noncooperation single cognitive transmission schemes, which demonstrate the benefits of our proposed cooperative strategy in conserving energy for secondary transmission. © 2020 Li Feng et al.
关键词	Computational complexity Cooperative communication Energy efficiency Energy utilization Iterative methods Probability Radio transmission Cognitive radio network Cognitive radio networks (CRNs) Cognitive transmissions Communication quality Cooperative transmission Detection probabilities Extensive simulations Reduce energy consumption
DOI	10.1155/2020/5104605
收录类别	EI ; SCIE
语种	英语
WOS研究方向	Computer Science ; Engineering ; Telecommunications
WOS类目	Computer Science, Information Systems ; Engineering, Electrical & Electronic ; Telecommunications
WOS记录号	WOS:000574263100002
出版者	Hindawi Limited, 410 Park Avenue, 15th Floor, 287 pmb, New York, NY 10022, United States
EI入藏号	20204009301246
EI主题词	Cognitive radio
原始文献类型	Journal article (JA)
EISSN	15308677
引用统计	被引频次[WOS]：0 [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.library.ouchn.edu.cn/handle/39V7QQFX/3872
专题	国家开放大学
作者单位	1.School of Engineering and Technology, Sichuan Open University, Chengdu; 610073, China; 2.Educational Information Management and Information System Research Center, Open University of China (OUC), Sichuan Open University, Chengdu; 610073, China
推荐引用方式 GB/T 7714	Feng, Li,Sun, Jirong,Sun, Hua,et al. Censoring-Based Relay Transmission for Achieving Energy Efficiency in Cognitive Radio Networks[J]. WIRELESS COMMUNICATIONS & MOBILE COMPUTING,2020,2020.
APA	Feng, Li,Sun, Jirong,Sun, Hua,&Tang, Shengju.(2020).Censoring-Based Relay Transmission for Achieving Energy Efficiency in Cognitive Radio Networks.WIRELESS COMMUNICATIONS & MOBILE COMPUTING,2020.
MLA	Feng, Li,et al."Censoring-Based Relay Transmission for Achieving Energy Efficiency in Cognitive Radio Networks".WIRELESS COMMUNICATIONS & MOBILE COMPUTING 2020(2020).