系统工程与电子技术 ›› 2025, Vol. 47 ›› Issue (1): 316-323.doi: 10.12305/j.issn.1001-506X.2025.01.32

• 通信与网络 • 上一篇    下一篇

基于传播图论的6 GHz隧道信道建模

迟俊, 孙溶辰, 孙志国, 易振宇   

  1. 哈尔滨工程大学信息与通信工程学院, 黑龙江 哈尔滨 150001
  • 收稿日期:2023-10-12 出版日期:2025-01-21 发布日期:2025-01-25
  • 通讯作者: 孙溶辰
  • 作者简介:迟俊 (1977—), 男, 硕士研究生, 主要研究方向为信道建模
    孙溶辰 (1988—), 男, 副教授, 博士, 主要研究方向为通信对抗、无线信道建模理论与关键技术
    孙志国 (1977—), 男, 教授, 博士, 主要研究方向为认知数据链、通信电子战系统、虚拟仿真
    易振宇 (1998—), 男, 硕士研究生, 主要研究方向为信道建模
  • 基金资助:
    国家自然科学基金(62001139)

Tunnel channel modeling based on propagation graph theory at 6 GHz

Jun CHI, Rongchen SUN, Zhiguo SUN, Zhenyu YI   

  1. College of Information and Communication Engineering, Harbin Engineering University, Harbin 150001, China
  • Received:2023-10-12 Online:2025-01-21 Published:2025-01-25
  • Contact: Rongchen SUN

摘要:

随着地下轨道交通通信服务需求的增加, 现有的轨道交通通信系统和天线设备承受了巨大压力。为了配合隧道场景下大规模天线的部署及多输入多输出(multiple input multiple output, MIMO)通信系统的设置, 提出利用传播图论来模拟隧道场景下的多径传播。利用基于Lambertian散射模型的传播图论来生成狭长隧道的信道冲激响应(channel impulse response, CIR), 通过隧道不同接收机位置的CIR获得功率时延谱、均方根时延和角度功率谱。为了验证在MIMO隧道信道建模领域传播图论的准确性与适用性, 将仿真数据与实测数据进行比对。实验结果表明, 该建模方法能有效地对6 GHz MIMO隧道信道进行建模。

关键词: 隧道信道建模, 多输入多输出, 传播图论, 信道冲激响应, Lambertian散射模型

Abstract:

With the increasing demand for underground rail transit communication services, existing rail transit communication system and antenna equipment are under tremendous pressure. To coordinate with the deployment of large-scale antennas and the setup of multiple input multiple output (MIMO) communication system in the tunnel scenario, using propagation graph theory to simulate multipath propagation is proposed. The channel impulse response (CIR) of the long and narrow tunnels is generated by the propagation graph theory based on Lambertian scattering model. The power delay profile, root mean square delay, and power azimuth spectrum are obtained from the channel impulse response at different receiver positions in the tunnel. In order to verify the accuracy and applicability of propagation graph theory in the field of MIMO tunnel channel modeling, simulation datas are compared with measured datas. The results show that the proposed method can effectively model the MIMO tunnel channel at 6 GHz.

Key words: tunnel channel modeling, multiple input multiple output (MIMO), propagation graph theory, channel impulse response (CIR), Lambertian scattering model

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