Outage Performance Analysis and Power Allocation of CR-NOMA System on Coordinated Direct and Full Duplex Relay Transmission

被引：0
|
作者：
Dong K. [1 ]
Shen B. [1 ]
Jiang H. [1 ]
机构：
[1] School of Communication and Information Engineering, Chongqing University of Posts and Telecommunications, Chongqing
来源：
Beijing Youdian Daxue Xuebao/Journal of Beijing University of Posts and Telecommunications | 2022年 / 45卷 / 06期
关键词：
Cognitive radio; Coordinate direct and relay transmission; Non-orthogonal multiple access;
D O I：
10.13190/j.jbupt.2022-003
中图分类号：
学科分类号：
摘要：
The combination of non-orthogonal multiple access (NOMA) and cognitive radio (CR) technology results in a CR-NOMA system. In order to achieve higher spectrum efficiency and greater throughput, the technology of coordinated direct and relay transmission can be further introduced into the CR-NOMA system. In the case of non-ideal successive interference cancellation and full-duplex relay, the exact closed expression of NOMA user outage probability (OP) is derived, and the approximate expression of user OP is obtained when the interference temperature is constrained or the transmission power of the secondary source approaches infinity. In addition, based on user fairness and OP performance, a user power allocation factor optimization algorithm is proposed. Monte Carlo simulation verifies the consistency between theoretical analysis and experimental results. With the optimization of the proposed user power optimization algorithm, and compared with the fixed power allocation scheme, the user fairness is enhanced and the system rate is significantly increased. © 2022, Editorial Department of Journal of Beijing University of Posts and Telecommunications. All right reserved.
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页码：89 / 94
页数：5
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