Error Performance Analysis of Multiuser Detection in Uplink-NOMA With Adaptive M-QAM

被引：7

作者：

Semira, Hichem ^{[1
]}

Kara, Ferdi ^{[2
,3
]}

Kaya, Hakan ^{[4
]}

Yanikomeroglu, Halim ^{[3
]}

机构：

[1] Univ Oum El Bouaghi, Lab Elect & New Technol, Oum El Bouaghi 04000, Algeria

[2] Zonguldak Bulent Ecevit Univ, Dept Comp Engn, TR-67100 Zonguldak, Turkey

[3] Carleton Univ, Dept Syst & Comp Engn, Ottawa, ON, Canada

[4] Zonguldak Bulent Ecevit Univ, Dept Elect Elect Engn, TR-67100 Zonguldak, Turkey

来源：

IEEE WIRELESS COMMUNICATIONS LETTERS | 2022年 / 11卷 / 08期

关键词：

Symbols; Quadrature amplitude modulation; Modulation; NOMA; Detectors; Uplink; Interference; Uplink NOMA; multi-user detection; bit error rate (BER); joint maximum-likelihood; QAM; PAM;

D O I：

10.1109/LWC.2022.3170796

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

This letter provides a generalized performance analysis for the multi-user uplink-NOMA system with adaptive square quadrature amplitude modulation (QAM) over Rayleigh fading channels. Motivated by the massive IoT connections and unavailability of orthogonal resources for each node, we consider a multi-access scheme where multi-users with single-antenna transmit data to a multiple-antenna base station through the same resource block. By taking advantage of combining diversity paths with the proposed joint maximum-likelihood detector (JMLD), a closed form expression for the upper bound of bit error rate (BER) is obtained. Despite the number of users or the order of modulation, the analytical results endorsed via computer simulations reveal the ability of the MRC-JMLD detector to discard the error floor completely. Moreover, the simulation results show that the MRC-JMLD surpasses its counterparts significantly and ensures a full diversity order.

引用

页码：1654 / 1658

页数：5

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