I/Q失衡影响下无人机多向全双工中继NOMA传输系统性能分析

陈慧; 张铭宇; 李兴旺; 孙江峰; 李美玲

doi:10.11999/JEIT211020

I/Q失衡影响下无人机多向全双工中继NOMA传输系统性能分析

doi: 10.11999/JEIT211020

1.
河南理工大学物理与电子信息学院焦作 454003
2.
河南理工大学计算机科学与技术学院焦作 454003
3.
太原科技大学电子信息工程学院太原 030024

基金项目: 国家自然科学基金青年基金(62001320)，河南省科技攻关项目(212102210557)，河南理工大学博士基金(B2018-39)

详细信息

作者简介:
陈慧：女，1988年生，讲师，研究方向为新一代无线通信技术

张铭宇：女，1998年生，硕士生，研究方向为新一代无线通信技术

李兴旺：男，1981年生，副教授，研究方向为新一代宽带移动通信系统的新理论及技术

孙江峰：男，1980年生，讲师，研究方向为物理层安全

李美玲：女，1982年生，教授，研究方向为5G移动通信关键技术

通讯作者:
孙江峰　sunjiangfeng@hpu.edu.cn

中图分类号: TN925
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- 被引次数: 0
出版历程
- 收稿日期: 2021-09-24
- 修回日期: 2022-02-15
- 录用日期: 2022-02-16
- 网络出版日期: 2022-03-01
- 刊出日期: 2022-03-28

Performances Analysis in UAV-Aided Multi-Way NOMA Full-Duplex Relay System with I/Q Imbalance

1.
School of Physics and Electronic Information, Henan Polytechnic University, Jiaozuo 454003, China
2.
School of Computer Science and Technology, Henan Polytechnic University, Jiaozuo 454003, China
3.
School of Electronic Information Engineering, Taiyuan University of Science and Technology, Taiyuan 030024, China

Funds: The Youth Fund of National Natural Science Foundation of China (62001320), The Science and Technology Project of Henan Province (212102210557), The Doctoral Fund of Henan Polytechnic University (B2018-39)

摘要

摘要: 无人机(UAV)具备高灵活性、强适应性和高机动性等优势，能够为6G网络提供便捷有效的辅助通信方案。为提高UAV通信系统的频谱效率，让所有用户彼此间在更少的时隙内完成信息交互，该文提出一种全双工(FD)多向中继非正交多址接入(NOMA)(FD NOMA MWRN)传输方案，考虑收发端都存在同相/正交(I/Q)失衡的情况，对系统的传输率和能量效率进行分析。仿真结果表明：相比半双工(HD)，全双工技术可以实现频谱利用率的翻倍；所提方案比正交多址接入(OMA)方案更具性能优势，且不受用户数量的影响，传输消耗的时隙数始终为1；I/Q失衡会限制系统传输率，UAV的工作高度也对其起到一定的约束作用。
- 无人机通信 /
- 非正交多址接入 /
- 多向中继 /
- 全双工 /
- I/Q失衡
Abstract: The Unmanned Aerial Vehicle (UAV) can provide convenient and effective supplementary communication solutions for 6G networks since it gets the advantages of flexibility, adaptability and high mobility. To improve further the spectrum efficiency and reduce the transmission time required for full data exchange, a Full-Duplex (FD) Multi-Way Relay Network Non-Orthogonal Multiple Access (NOMA) transmission scheme (FD NOMA MWRN) is proposed. In addition, a more practical case is assumed that in-phase/quadrature imbalance of transceiver is taken into account. Based on this, the transmission rate and energy efficiency are analyzed. The simulation results indicate the following conclusions. Firstly, the full-duplex transmission can improve the spectral utilization compared to the Half-Duplex (HD) mode. Secondly, the proposed scheme, which consumes the number of time slots is always one regardless of the number of users, has better performance than the Orthogonal Multiple Access (OMA) scheme. Thirdly, the In-phase/Quadrature (I/Q) imbalance and the working height of the UAV both limit the transmission rate of the system.
- Unmanned Aerial Vehicle (UAV) communication /
- Non-Orthogonal Multiple Access (NOMA) /
- Multi-way relay /
- Full Duplex (FD) /
- In-phase/Quadrature (I/Q) imbalance

HTML全文

图 1 3维无人机多向中继通信系统模型图

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图 2 NOMA/OMA方案下的系统ASR对比

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图 3 HD/FD工作模式下的传输性能对比

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图 4 系统ASR与UAV高度关系图

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图 5 NOMA/OMA方案下的EE对比

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图 6 ASR与振幅及相位不匹配程度关系图

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