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A Novel Spectrum Sharing Scheme Assisted by Secondary NOMA Relay
发表时间:2019-03-12 点击次数:
论文类型: 期刊论文
第一作者: Chen, Bingcai
通讯作者: Zhao, N (reprint author), Dalian Univ Technol, Fac Elect Informat & Elect Engn, Dalian 116024, Peoples R China.; Zhao, N (reprint author), Southeast Univ, Natl Mobile Commun Res Lab, Nanjing 210096, Jiangsu, Peoples R China.
合写作者: Chen, Yu,Chen, Yunfei,Cao, Yang,Zhao, Nan,Ding, Zhiguo
发表时间: 2018-10-01
发表刊物: IEEE WIRELESS COMMUNICATIONS LETTERS
收录刊物: SCIE
文献类型: J
卷号: 7
期号: 5
页面范围: 732-735
ISSN号: 2162-2337
关键字: Maximal-ratio combining; non-orthogonal multiple access; power allocation; relay; spectrum sharing
摘要: In this letter, a two-slot secondary non-orthogonal multiple access (NOMA) relay is used to assist spectrum sharing, where the primary transceivers with long distance communicate through the relay. First, the information for the primary receiver (PR) and secondary receivers (SRs) is transmitted via the NOMA relay. Then, the information for PR is re-transmitted to it through a selected SR to improve its quality of service using maximal-ratio combining, while the next data for PR is sent from the primary transmitter to the NOMA relay simultaneously. The power allocation solution is derived for the NOMA relay. Simulation results have shown the effectiveness of the proposed scheme.
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