A Rotated-Constellation Based Method for BER Analysis in Uplink NOMA Systems

被引：1

作者：

Wang, Yifeng ^{[1
,2
]}

Zhou, Ting ^{[2
,3
]}

Xu, Tianheng ^{[2
,3
]}

Hu, Honglin ^{[2
]}

机构：

[1] Univ Chinese Acad Sci, Sch Microelect, Beijing 100049, Peoples R China

[2] Chinese Acad Sci, Shanghai Adv Res Inst, Shanghai 201210, Peoples R China

[3] Shanghai Frontier Innovat Res Inst, Shanghai 201108, Peoples R China

来源：

IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY | 2023年 / 72卷 / 02期

关键词：

NOMA; Detectors; Bit error rate; Uplink; Symbols; Modulation; Analytical models; Bit error rate (BER); non-orthogonal multiple access (NOMA); Rayleigh fading channel; joint maximum-likelihood (JML) detection; rotated-constellation based method; NONORTHOGONAL MULTIPLE-ACCESS; DOWNLINK;

D O I：

10.1109/TVT.2022.3209866

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Non-orthogonal multiple access (NOMA) is one of candidate technologies in the next generation radio access networks, in which the joint maximum-likelihood (JML) detector has the optimal estimation performance. In this paper, we propose a rotated-constellation based method to regularize the decision boundaries of received constellation. Through regular decision boundaries, we further derive the approximate closed-form BER expressions of uplink NOMA systems in Rayleigh fading channels. Numerical results verify the effectiveness of rotated-constellation based method and conform to our derivation. It is also shown through simulations that the proposed analysis method outperforms conventional method in terms of accuracy.

引用

页码：2632 / 2637

页数：6

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