非理想条件下认知非正交多址接入系统中断性能研究

李兴旺; 李岩聪; 高向川; 于青萍; 黄高见

doi:10.11999/JEIT220721

非理想条件下认知非正交多址接入系统中断性能研究

doi: 10.11999/JEIT220721

1.
河南理工大学物理与电子信息学院焦作 454003
2.
郑州大学信息工程学院郑州 450000
3.
西南石油大学电气信息学院成都 610500

基金项目: 河南省科技攻关项目(212102210557)，河南理工大学博士基金(B2022-2)，西南石油大学“启航计划”项目(2021QHZ037)，广东省基础与应用基础研究基金(2022A1515010999)，广州市科技计划项目(202201011850)，广东省教育厅科研项目(2021KCXTD061)

详细信息

作者简介:
李兴旺：男，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

李岩聪：女，硕士生，研究方向为新一代无线通信技术

高向川：男，教授，研究方向为先进移动通信、通信信号处理与对抗、车联网-自动驾驶

于青萍：女，讲师，研究方向为新一代无线通信技术

黄高见：男，讲师，研究方向为阵列信号处理理论

通讯作者:
李兴旺　lixingwang@hpu.edu.cn

中图分类号: TN92
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- 被引次数: 0
出版历程
- 收稿日期: 2022-06-01
- 修回日期: 2022-08-31
- 网络出版日期: 2022-09-02
- 刊出日期: 2023-07-10

Outage Performance Analysis of Cognitive Radio Non-Orthogonal Multiple Access System under Non-ideal Conditions

1.
School of Physics and Electronic Information, Henan Polytechnic University, Jiaozuo 454003, China
2.
School of Information Engineering, Zhengzhou University, Zhengzhou 450000, China
3.
School of Electronic Engineering and Information, Southwest Petroleum University, Chengdu 610500, China

Funds: The Science and Technology Project of Henan Province (212102210557), The Doctoral Fund of Henan Polytechnic University (B2022-2), The Scientific Research Starting Project of SWPU (2021QHZ037), Guangdong Basic and Applied Basic Research Foundation (2022A1515010999), The Science and Technology Program of Guanzhou (202201011850), The Scientific Research Project of Education Department of Guangdong (2021KCXTD061)

摘要

摘要: 为满足网络需求，提高系统频谱利用率，该文提出一种覆盖式认知非正交多址接入(CR-NOMA)网络。考虑实际中非线性功率放大(NLPA)、非理想连续干扰消除(ipSIC)和非完美信道状态信息(CSI)等非理性因素，研究所提网络的可靠性能，推导出系统中断概率(OP)和系统吞吐量的解析表达式，并进一步分析高信噪比下中断概率的表达式、理想状态下中断概率的高信噪比(SNR)近似、分集阶数。分析及仿真结果表明：NLPA, ipSIC和信道估计误差参数对系统中断概率性能有负面影响；中断概率随着信噪比的增加而减小，在高信噪比下收敛到一个固定常数；中断概率随着功率分配系数的改变也会产生相应的变化。
- 非正交多址接入 /
- 认知无线电网络 /
- 非线性功率放大 /
- 不完全连续干扰消除 /
- 信道估计
Abstract: To meet the network requirements and improve the utilization of system spectrum, a Cognitive Radio Non-Orthogonal Multiple Access (CR-NOMA) technology is proposed. To investigate the system reliability, NonLinear Power Amplification (NLPA), incomplete Successive Interference Cancellation (ipSIC) and incomplete Channel State Information (CSI) are taken into account. The analytical expressions of system Outage Probability (OP) and system throughput are derived, and the expressions of outage probability under high SNR, high SNR approximation of outage probability under ideal state and diversity order are further analyzed. The simulation results show that: NLPA, ipSIC and channel estimation error parameters have negative effects on interrupt probability; The interrupt probability decreases with the increase of SNR until it converges to a fixed constant at a high SNR; Interruption probability will also change with the change of power distribution coefficient.
- Non-Orthogonal Multiple Access (NOMA) /
- Cognitive Radio (CR) network /
- NonLinear Power Amplification (NLPA) /
- incomplete Successive Interference Cancellation(ipSIC) /
- Channel estimation

HTML全文

图 1 系统模型

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图 2 理想和非理想条件下用户的OP与信噪比关系图

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图 3 理想和非理想条件下用户的ST与信噪比关系图

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图 4 用户的OP与功率分配系数$ {\alpha _2} $关系图

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图 5 用户的ST与功率分配系数$ {\alpha _2} $关系图

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