Two-Stage Adaptive Relay Selection and Power Allocation Strategy for Cooperative CR-NOMA Networks in Underlay Spectrum Sharing | |
Li, Suoping1,2; Liang, Wenwu2; Pla, Vicent3; Yang, Nana2; Yang, Sa1 | |
刊名 | APPLIED SCIENCES-BASEL |
2021-11 | |
卷号 | 11期号:21 |
关键词 | cognitive radio networks non-orthogonal multiple access underlay spectrum sharing relay selection power allocation |
DOI | 10.3390/app112110433 |
英文摘要 | 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. |
WOS研究方向 | Chemistry ; Engineering ; Materials Science ; Physics |
语种 | 英语 |
出版者 | MDPI |
WOS记录号 | WOS:000718805300001 |
内容类型 | 期刊论文 |
源URL | [http://ir.lut.edu.cn/handle/2XXMBERH/150086] |
专题 | 理学院 |
作者单位 | 1.Lanzhou Univ Technol, Sch Elect & Informat Engn, Lanzhou 730050, Peoples R China; 2.Lanzhou Univ Technol, Sch Sci, Lanzhou 730050, Peoples R China; 3.Univ Politecn Valencia, Dept Commun, Valencia 46022, Spain |
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). |
个性服务 |
查看访问统计 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论