Performance Analysis of Relay Based NOMA Cooperative Transmission under Cognitive Radio Network

作     者：Yinghua Zhang Jian Liu Yunfeng Peng Yanfang Dong Guozhong Sun Hao Huang Changming Zhao 

作者机构：School of Computer and Communication EngineeringUniversity of Science and Technology BeijingBeijing100083China Dawning Information Industry(Beijing)Co.Ltd.Beijing100083China Higon Austin R&D CenterAustinTX 78746USA School of Computer ScienceChengdu University of Information TechnologyChengdu610225China College of Computer ScienceSichuan UniversityChengdu610041China 

出 版 物：《Computers, Materials & Continua》 (计算机、材料和连续体（英文）)

年 卷 期：2020年第63卷第4期

页      面：197-212页

核心收录：

学科分类：0831[工学-生物医学工程（可授工学、理学、医学学位）] 0808[工学-电气工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0701[理学-数学] 0801[工学-力学（可授工学、理学学位）] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

基　　金：This work is supported by National Major Project(No.2017ZX03001021-005) National Key R&D Program of China(Grant No.2017YFB1001600) 2018 Sugon Intelligent-Factory on Advanced Computing Devices(No.MIIT2018-265-137) 

主　　题：Relay selection outage probability NOMA QoS signal-to-interference-plus-noise rate(SINR) beam-forming 

摘      要：This paper proposes a hybrid spectrum accessing mechanism by using NOMA-based cooperative transmission and beam-forming *** this mechanism,the secondary user employs spectrum-sensing technology to detect the existence of the primary *** the primary user does not exist,the secondary source user directly transmits data to the destination *** the primary user exists,the secondary source user finds the optimal relay according to certain selection principle before transmitting data to the destination user through the chosen relay *** the signal receiving stage,the secondary user takes use of beam-forming technology to receive the signal from both the secondary source and the secondary relay *** the interference from the primary user is cancelled out in the ***,the outage probability for secondary user in the proposed mechanism is theoretically ***,the simulation results show that compared with the traditional mechanism,the proposed system model can not only guarantee the continuity of secondary transmission,but also significantly reduce the outage probability of secondary transmission.