| 马嘉文,杨丽花,吕文俊,薛寒,魏苏皖.11GHz室内场景中具有人体遮挡的无线传播特性研究[J].高技术通讯(中文),2026,36(2):157~169 |
| 11GHz室内场景中具有人体遮挡的无线传播特性研究 |
| Research on propagation characteristics of wireless channels with human body shadowing in 11 GHz indoor scenarios |
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| DOI：10. 3772 / j. issn. 1002 - 0470. 2026. 02. 005 |
| 中文关键词: 内场景； 11GHz； 路径损耗； 阴影效应； 高度差； 人体遮挡 |
| 英文关键词: indoor scenario, 11GHz, path loss, shadowing, height difference, human body occlusion |
| 基金项目: |
| 作者 | 单位 | | 马嘉文 | （南京邮电大学通信与信息学院 江苏省无线通信重点实验室南京 210003） | | 杨丽花 | | | 吕文俊 | | | 薛寒 | | | 魏苏皖 | |
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| 中文摘要: |
| 本文对11GHz频段下室内场景的无线传播特性进行了研究，并特别考虑了收发天线高度差和人体遮挡效应对信号传播的影响。基于实测数据，构建了一种具有高度差和人体遮挡双因子影响的路径损耗（path loss，PL）模型，并在小型室内办公、走廊和大型实验室等多种不同场景下对其进行了验证。研究表明，在无人体遮挡时，路径损耗随高度差的变化服从二次函数分布。在不同高度差时，人体遮挡对无线传播特性的影响不同，即当发送端的高度在人体身高以下至臀部位置时，人体遮挡引起的路径损耗与其距离发送端的距离可近似描述成二次函数关系；当发送端的高度高过人体，人体遮挡引起的路径损耗与其距离发送端的距离可近似描述成三次函数关系。本文研究结论可为室内体域网通信系统的设计奠定基础。 |
| 英文摘要: |
| The characteristics of wireless channel are investigated in indoor scenarios at 11GHz, with a specific focus on the influence of height differences between transmitting and receiving antennas, as well as human body obstruction on signal propagation. Based on measurement data, a path loss (PL)model with height difference and human body occlusion is proposed, a comparative analysis is conducted in office, corridor and large laboratory scenarios. The research indicates that the variation of PL with height differences conforms to a quadratic function distribution without human body occlusion. When the transmitter height is below the human height to the hip position, the PL caused by human body occlusion can be approximately described by a quadratic function relationship with their distance from the transmitter. However, when the transmitter height exceeds that of human body, their relationship can be approximately described by a cubic function. The research results can lay the foundation for the design of indoor body area network communication systems. |
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