不完全信道状态信息下非线性波形非正交多址接入系统吞吐量分析

李赛; 党小宇; 虞湘宾; 郝崇正; 李杰; 张俊

doi:10.11999/JEIT210571

不完全信道状态信息下非线性波形非正交多址接入系统吞吐量分析

doi: 10.11999/JEIT210571

南京航空航天大学电子信息工程学院南京 211106

基金项目: 国家自然科学基金(62031017, 61971221)，中央高校基本科研业务费(NP2020104)

详细信息

作者简介:
李赛：男，1993年生，博士生，研究方向为NOMA、无人机通信及信道测量

党小宇：男，1973年生，教授，研究方向为无线通信、深空通信及航空航天测控

虞湘宾：男， 1970年生，教授，研究方向为NOMA、智能表面反射通信及绿色通信

郝崇正：男，1989年生，博士生，研究方向为智能信号检测和MIMO通信

李杰：女，1985年生，博士生，研究方向为资源分配和无人机集群通信

张俊：男，1996年生，硕士生，研究方向为同步、调制解调及信号波形理论

通讯作者:
党小宇　dang@nuaa.edu.cn

中图分类号: TN929.53
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- 文章访问数: 563
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- 被引次数: 0
出版历程
- 收稿日期: 2021-06-15
- 修回日期: 2022-01-16
- 录用日期: 2022-03-07
- 网络出版日期: 2022-03-18
- 刊出日期: 2022-08-17

Throughput Analysis of Non-Linear Waveform Non-Orthogonal Multiple Access System with Imperfect Channel State Information

College of Electronic Information Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China

Funds: The National Natural Science Foundation of China (62031017, 61971221), The Fundamental Research Funds for the Central Universities of China (NP2020104)

摘要

摘要: 针对目前关于非正交多址接入(NOMA)的研究均局限于线性调制的问题，且考虑到实际系统中不完全的信道状态信息(CSI)，基于最小频移键控类(MSK-type)调制，该文提出一种不完全CSI下的非线性波形NOMA系统。首先，分别采用过采样和匹配滤波技术对两用户的上行异步和同步系统进行了建模。进一步，基于矩阵分解理论和连续干扰消除(SIC)机制，分别推导出完全或不完全CSI下系统吞吐量达到最大时的发射功率和归一化时延。最后，数值仿真结果表明了完全与不完全CSI下系统吞吐量与帧长、响应长度、波形以及频率脉冲等系统参数的关系。
- 非正交多址接入 /
- 最小频移键控类调制 /
- 不完全信道状态信息 /
- 系统吞吐量 /
- 信道估计误差
Abstract: Focusing on problems of Non-Orthogonal Multiple Access (NOMA) that are limited to linear modulation, and considering the imperfect Channel State Information (CSI) in the actual system, this paper proposes a nonlinear waveform NOMA system under imperfect CSI based on Minimum Shift Keying type (MSK-type) modulations. First, two-user uplink asynchronous and synchronous system models are established using oversampling and matched filtering techniques. Furthermore, based on the matrix decomposition theory and Successive Interference Cancellation (SIC) mechanism, the transmit power and normalized delay when the system throughput reaches the maximum under perfect or imperfect CSI are derived. Finally, the numerical simulation results show the relationship between system throughput and system parameters such as frame length, response length, waveform, and frequency pulse under perfect and imperfect CSI.
- Non-Orthogonal Multiple Access (NOMA) /
- Minimum Shift Keying (MSK)-type modulations /
- Imperfect Channel State Information (CSI) /
- System throughput /
- Channel estimation error

HTML全文

图 1 2个用户和1个基站的上行NOMA系统

下载: 全尺寸图片幻灯片

图 2 全响应MSK-type信号下的过采样接收示意图

下载: 全尺寸图片幻灯片

图 3 完全与不完全CSI下帧长与系统吞吐量的关系

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图 4 完全与不完全CSI下响应长度与系统吞吐量的关系

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图 5 完全与不完全CSI下线性和非线性波形的系统吞吐量与信道估计增益的关系

下载: 全尺寸图片幻灯片

图 6 完全与不完全CSI下不同频率脉冲的系统吞吐量与信道估计增益的关系

下载: 全尺寸图片幻灯片

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