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基于上行非正交多址接入技术的星空地融合网络性能分析

袁祖霞 程铭 郭克锋

袁祖霞, 程铭, 郭克锋. 基于上行非正交多址接入技术的星空地融合网络性能分析[J]. 电子与信息学报, 2022, 44(8): 2666-2676. doi: 10.11999/JEIT220379
引用本文: 袁祖霞, 程铭, 郭克锋. 基于上行非正交多址接入技术的星空地融合网络性能分析[J]. 电子与信息学报, 2022, 44(8): 2666-2676. doi: 10.11999/JEIT220379
YUAN Zuxia, CHENG Ming, GUO Kefeng. Performance Analysis of Satellite-Aerial-Terrestrial Integrated Network Based on Uplink NOMA Technology[J]. Journal of Electronics & Information Technology, 2022, 44(8): 2666-2676. doi: 10.11999/JEIT220379
Citation: YUAN Zuxia, CHENG Ming, GUO Kefeng. Performance Analysis of Satellite-Aerial-Terrestrial Integrated Network Based on Uplink NOMA Technology[J]. Journal of Electronics & Information Technology, 2022, 44(8): 2666-2676. doi: 10.11999/JEIT220379

基于上行非正交多址接入技术的星空地融合网络性能分析

doi: 10.11999/JEIT220379
基金项目: 国家自然科学基金(62001517),江苏省研究生科研与实践创新计划项目(KYCX19_0896)
详细信息
    作者简介:

    袁祖霞:女,1983年生,博士生,研究方向为卫星通信、通信信号处理等

    程铭:男,1991年生,讲师,研究方向为毫米波通信、星天地融合网络、预编码技术等

    郭克锋:男,1990年生,讲师,研究方向为MIMO通信系统、卫星通信、多用户通信系统等

    通讯作者:

    袁祖霞 yuanzuxia@126.com

  • 中图分类号: TN929.1

Performance Analysis of Satellite-Aerial-Terrestrial Integrated Network Based on Uplink NOMA Technology

Funds: The National Natural Science Foundation of China (62001517), The Postgraduate Research Practice Innovation Program of Jiangsu Province (KYCX19_0896)
  • 摘要: 针对光电混合的星空地融合网络上行链路,该文研究了多天线波束成形技术和上行非正交多址接入(NOMA)技术相结合的系统遍历和速率性能。首先,在无人机采用多天线和上行NOMA技术条件下,为实现系统和速率最大化,提出了一种基于统计信道状态信息的波束成形方案。接着,假设卫星-无人机链路采用自由空间光链路且服从伽马-伽马衰落,无人机-地面用户链路采用射频链路且服从相关瑞利衰落,推导了系统和速率的闭合表达式。最后,通过数值仿真验证了理论分析的正确性。仿真结果表明,与正交多址接入(OMA)方案相比,所提方案提高了系统性能,并且与基准波束成形(BF)方案相比,所提方案具有更好的性能优势。
  • 图  1  系统模型

    图  2  系统框图

    图  3  波束成形次优化方案的流程图

    图  4  NOMA/OMA策略下遍历和速率曲线

    图  5  NOMA完美/非完美SIC条件下采用不同BF方案遍历和速率曲线

    图  6  不同波束成形方案下遍历和速率曲线

    表  1  系统参数

    参数数值参数数值
    卫星轨道GEOFSO链路路径损耗(dB)72
    卫星高度($ \times {10^4} $ km)3.6指向损失$ {A_0} $1
    无人机与用户距离$ {d_k} $(km)1.1FSO接收器接受孔径$ {D_{\text{r}}} $(m)0.3[13]
    半径$ {r_0} $(m)500电光转换系数$\eta $1
    RF链路载波频率$ {f_{\text{c}}} $(GHz)2等效波束半径与指向误差偏移量之间的比率$ \tau $6
    RF链路路径损耗(dB)114~115与大气环境有关的大尺度单元的有效数量$ \alpha $2.902
    FSO链路波长(nm)1550[13]与大气环境有关的小尺度单元的有效数量$ \beta $2.51
    光接收带宽$ {B_0} $(GHz)30[12]AOA角度$ {\theta _{\text{d}}} $$ {30^ \circ } \sim {75^ \circ } $
    下载: 导出CSV
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出版历程
  • 收稿日期:  2022-04-01
  • 修回日期:  2022-07-10
  • 录用日期:  2022-07-13
  • 网络出版日期:  2022-07-15
  • 刊出日期:  2022-08-17

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