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非完美条件下的非正交多址接入星地融合网络性能分析

帅海峰 郭克锋 安康 朱诗兵 李长青

帅海峰, 郭克锋, 安康, 朱诗兵, 李长青. 非完美条件下的非正交多址接入星地融合网络性能分析[J]. 电子与信息学报, 2023, 45(2): 427-435. doi: 10.11999/JEIT220377
引用本文: 帅海峰, 郭克锋, 安康, 朱诗兵, 李长青. 非完美条件下的非正交多址接入星地融合网络性能分析[J]. 电子与信息学报, 2023, 45(2): 427-435. doi: 10.11999/JEIT220377
SHUAI Haifeng, GUO Kefeng, AN Kang, ZHU Shibing, LI Changqing. On the Performance of Non-Orthogonal Multiple Access Integrated Satellite-Terrestrial Networks in Imperfect Constraints[J]. Journal of Electronics & Information Technology, 2023, 45(2): 427-435. doi: 10.11999/JEIT220377
Citation: SHUAI Haifeng, GUO Kefeng, AN Kang, ZHU Shibing, LI Changqing. On the Performance of Non-Orthogonal Multiple Access Integrated Satellite-Terrestrial Networks in Imperfect Constraints[J]. Journal of Electronics & Information Technology, 2023, 45(2): 427-435. doi: 10.11999/JEIT220377

非完美条件下的非正交多址接入星地融合网络性能分析

doi: 10.11999/JEIT220377
基金项目: 国家自然科学基金(61901502,62001517),国家创新人才博士后计划(BX20200101),航天工程大学项目(2020XXAQ01, 2019XXAQ05)
详细信息
    作者简介:

    帅海峰:男,博士生,研究方向为航天通信及非正交多址接入技术等

    郭克锋:男,讲师,研究方向为卫星通信、非正交多址接入技术和物理层安全等

    安康:男,高级工程师,研究方向为B5G/6G无线通信、可重构智能表面和通信抗干扰等

    朱诗兵:男,教授,研究方向为航天通信、自组网及网络安全等

    李长青:男,副教授,研究方向为航天通信及无线通信优化等

    通讯作者:

    郭克锋 guokefeng.cool@163.com

  • 中图分类号: TN929.5

On the Performance of Non-Orthogonal Multiple Access Integrated Satellite-Terrestrial Networks in Imperfect Constraints

Funds: The National Natural Science Foundation of China (61901502,62001517), The National Postdoctoral Program for Innovative Talents (BX20200101), The Project of Space Engineering University (2020XXAQ01,2019XXAQ05)
  • 摘要: 随着星地融合网络(ISTNs)的快速发展,大量的传感器和无线设备都有无线服务的接入需求,从而对星地融合网络的频谱效率和服务质量提出了新的挑战。不同于传统的正交多址接入技术,非正交多址接入(NOMA)技术可在相同的频率下传输不同用户的信号,其被认作为提高星地融合网络频谱效率的有效方法,从而被广泛研究。目前,针对NOMA和星地融合网络的研究大多都是在理想条件下进行的,由此该文研究更加实际的情况,即在非完美串行干扰消除(SIC)、信道估计误差和同频干扰下,对星地融合网络的性能进行研究。该文在假设卫星端和地面端均采用多天线的前提下,推导了系统遍历容量的闭式表达式,验证了非完美条件对于系统性能的影响。同时蒙特卡罗仿真验证了理论分析和推导的正确性。
  • 图  1  多天线星地融合NOMA网络

    图  2  遍历容量随功率分配因子的变化

    图  3  遍历容量随非完美SIC的变化

    图  4  遍历容量随信道估计误差的变化

    图  5  遍历容量随同频干扰的变化

    表  1  系统参数

    参数数值
    卫星轨道GEO
    载波频率18 GHz
    载波带宽50 MHz
    3 dB角度0.4°
    最大波束增益48 dB
    接收天线增益4 dB
    噪声温度300 K
    雨衰$\mu = - 3.125 $, $\delta _\zeta ^2 = 1.591$
    下载: 导出CSV

    表  2  信道参数

    衰落程度${m_j}$ ${b_j}$ ${\varOmega _j}$
    重度衰落(Frequent Heavy Shadowing, FHS)10.0630.0007
    中度衰落(Average Shadowing, AS)50.2510.2790
    轻度衰落(Infrequent Light Shadowing, ILS)100.1501.2900
    下载: 导出CSV
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出版历程
  • 收稿日期:  2022-04-01
  • 修回日期:  2022-07-22
  • 网络出版日期:  2022-07-29
  • 刊出日期:  2023-02-07

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