Minimum Error Performance of Downlink Non-Orthogonal Multiple Access Systems

被引：0
|
作者：
Wang, Yuan [1 ,2 ]
Wang, Jiaheng [1 ,2 ]
Ma, Lujuan [3 ]
Huang, Yongming [1 ,2 ]
Zhao, Chunming [1 ,2 ]
机构：
[1] Southeast Univ, Natl Mobile Commun Res Lab, Nanjing, Peoples R China
[2] Purple Mt Labs, Nanjing, Peoples R China
[3] Shandong Jianzhu Univ, Sch Informat & Elect Engn, Jinan, Peoples R China
来源：
2019 IEEE 90TH VEHICULAR TECHNOLOGY CONFERENCE (VTC2019-FALL) | 2019年
基金：
中国国家自然科学基金;
关键词：
Error propagation; non-orthogonal multiple access; power allocation; successive interference cancellation;
D O I：
10.1109/vtcfall.2019.8891512
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
Non-orthogonal multiple access (NOMA) relies on power domain multiplexing via successive interference cancellation (SIC). Current NOMA system designs are based on information rate and assume perfect SIC. However, error propagation in SIC is inevitable in practice. This paper considers imperfect SIC and investigates the NOMA system design from the perspective of minimum error probability. Specifically, we consider the uncoded and the coded NOMA systems and derive the error probabilities of the users. Then, we aim to minimize the average error probability of the users by searching for appropriate power allocation. Numerical results are provided to evaluate the minimum error performance of NOMA along with useful insights.
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页数：5
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