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基于非正交多址接入的星空地多用户认知网络性能研究

刘瑞 郭克锋 朱诗兵 李长青 李可盈

刘瑞, 郭克锋, 朱诗兵, 李长青, 李可盈. 基于非正交多址接入的星空地多用户认知网络性能研究[J]. 电子与信息学报, 2024, 46(6): 2488-2496. doi: 10.11999/JEIT230212
引用本文: 刘瑞, 郭克锋, 朱诗兵, 李长青, 李可盈. 基于非正交多址接入的星空地多用户认知网络性能研究[J]. 电子与信息学报, 2024, 46(6): 2488-2496. doi: 10.11999/JEIT230212
LIU Rui, GUO Kefeng, ZHU Shibing, LI Changqing, LI Keying. Performance Analysis of Satellite-Aerial-Terrestrial Multiple Primary Users Cognitive Networks Based on NOMA[J]. Journal of Electronics & Information Technology, 2024, 46(6): 2488-2496. doi: 10.11999/JEIT230212
Citation: LIU Rui, GUO Kefeng, ZHU Shibing, LI Changqing, LI Keying. Performance Analysis of Satellite-Aerial-Terrestrial Multiple Primary Users Cognitive Networks Based on NOMA[J]. Journal of Electronics & Information Technology, 2024, 46(6): 2488-2496. doi: 10.11999/JEIT230212

基于非正交多址接入的星空地多用户认知网络性能研究

doi: 10.11999/JEIT230212
基金项目: 国家自然科学基金(6201517)
详细信息
    作者简介:

    刘瑞: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

    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

    李可盈:女,博士生,研究方向为航天通信及物理层安全等

    通讯作者:

    郭克锋 guokefeng.cool@163.com

  • 11) 通过反馈和培训可以达到完美的CSI,这一方法已在DVB - S2中应用。2) 用户太多会导致干扰大或接收机复杂度高,因此本文采用两用户对方案,以平衡性能增益和通信成本。
  • 中图分类号: TN927.2

Performance Analysis of Satellite-Aerial-Terrestrial Multiple Primary Users Cognitive Networks Based on NOMA

Funds: The National Natural Science Foundation of China (6201517)
  • 摘要: 卫星通信(SatCom)因其强大的生存能力和无缝覆盖的独特优势,能够弥补地面通信网络受地形限制、覆盖范围小等短板,在当前和未来的无线通信系统中具有重要的地位。此外,空中辅助通信由于其在星地网中的灵活性和可扩展性,具有很高的研究价值。为克服星空地网络(ISATN)中频谱短缺问题,认知无线电(CR)和非正交多址接入(NOMA)被用于提高频谱利用率和传输性能。因此,该文研究了基于NOMA的星空地认知网络(CISATN)的性能,考虑多用户场景,分别得到了主网络和次级网络的中断概率(OP)的准确表达式和高信噪比下的渐进表达式,并给出了这两个网络的分集增益。最后,通过蒙特卡罗仿真验证了理论推导的正确性,并分析了关键变量对系统指标的影响。
  • 图  1  系统模型

    图  2  PN的OP与不同天线个数$N$的关系

    图  3  PN的OP与不同功率分配系数$\alpha $的关系

    图  4  PN的OP与不同的目标速率${R_1}$和${R_2}$的关系

    图  5  SN的OP与不同天线个数$N$的关系

    表  1  仿真参数

    参数数值
    卫星GEO
    ${f_{{\text{ab}}}}$2 GHz
    $\left( {{\vartheta _\zeta },\sigma _\zeta ^2} \right)$(–3.125,1.591)
    $B$15 MHz
    ${\theta _{3{\text{dB}}}}$0.4°
    ${\varepsilon _{\max }}$48 dB
    ${\ell _{\max }}$4 dB
    $T$300K
    ${\sigma ^2}$1
    Frequent Heavy Shadowing (FHS)(1,0.063,0.0007)
    Average Shadowing (AS)(5,0251,0.279)
    Infrequent Light Shadowing (ILS)(10,0.158,1.29)
    下载: 导出CSV
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出版历程
  • 收稿日期:  2023-04-03
  • 修回日期:  2023-07-03
  • 网络出版日期:  2023-07-14
  • 刊出日期:  2024-06-30

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