Two-Stage Adaptive Relay Selection and Power Allocation Strategy for Cooperative CR-NOMA Networks in Underlay Spectrum Sharing

doi:10.3390/app112110433

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	Two-Stage Adaptive Relay Selection and Power Allocation Strategy for Cooperative CR-NOMA Networks in Underlay Spectrum Sharing
	Li, Suoping1,2 ; Liang, Wenwu 1; Pla, Vicent 3; Yang, Nana1 ; Yang, Sa 2
	2021-11
发表期刊	APPLIED SCIENCES-BASEL
卷号	11 期号:21
摘要	In this paper, we consider a novel cooperative underlay cognitive radio network based on non-orthogonal multiple access (CR-NOMA) with adaptive relay selection and power allocation. In secondary networks, dedicated relay assistance and user assistance are used to achieve communication between the base station and the far (and near) user. Here, a two-stage adaptive relay selection and power allocation strategy is proposed to maximize the achievable data rate of the far user while ensuring the service quality of near user. Furthermore, the closed-form expressions of outage probability of two secondary users are derived, respectively, under interference power constraints, revealing the impact of transmit power, number of relays, interference threshold and target data rate on system outage probability. Numerical results and simulations validate the advantages of the established cooperation and show that the proposed adaptive relay selection and power allocation strategy has better outage performance.
关键词	cognitive radio networks non-orthogonal multiple access underlay spectrum sharing relay selection power allocation
DOI	10.3390/app112110433
收录类别	SCIE
语种	英语
WOS研究方向	Chemistry ; Engineering ; Materials Science ; Physics
WOS类目	Chemistry, Multidisciplinary ; Engineering, Multidisciplinary ; Materials Science, Multidisciplinary ; Physics, Applied
WOS记录号	WOS:000718805300001
出版者	MDPI
来源库	WOS
引用统计	被引频次：6[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/150086
专题	理学院
通讯作者	Li, Suoping; Liang, Wenwu
作者单位	1.Lanzhou Univ Technol, Sch Sci, Lanzhou 730050, Peoples R China; 2.Lanzhou Univ Technol, Sch Elect & Informat Engn, Lanzhou 730050, Peoples R China; 3.Univ Politecn Valencia, Dept Commun, Valencia 46022, Spain
第一作者单位	理学院; 兰州理工大学
通讯作者单位	理学院; 兰州理工大学
第一作者的第一单位	理学院
推荐引用方式 GB/T 7714	Li, Suoping,Liang, Wenwu,Pla, Vicent,et al. Two-Stage Adaptive Relay Selection and Power Allocation Strategy for Cooperative CR-NOMA Networks in Underlay Spectrum Sharing[J]. APPLIED SCIENCES-BASEL,2021,11(21).
APA	Li, Suoping,Liang, Wenwu,Pla, Vicent,Yang, Nana,&Yang, Sa.(2021).Two-Stage Adaptive Relay Selection and Power Allocation Strategy for Cooperative CR-NOMA Networks in Underlay Spectrum Sharing.APPLIED SCIENCES-BASEL,11(21).
MLA	Li, Suoping,et al."Two-Stage Adaptive Relay Selection and Power Allocation Strategy for Cooperative CR-NOMA Networks in Underlay Spectrum Sharing".APPLIED SCIENCES-BASEL 11.21(2021).

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