Channel modeling and analysis for wireless networks in underground mines and road tunnels
Channel modeling and analysis for wireless networks in underground mines and road tunnels
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DOI：
10.1109/tcomm.2010.06.080353
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发表时间：
2010-06
影响因子：
8.3
通讯作者：
Zhi Sun;I. Akyildiz
中科院分区：
文献类型：
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作者：
Zhi Sun;I. Akyildiz
无线网络可以极大地方便地下矿山和道路/地铁隧道中的通信，这些地方的电磁波传播特性与地面环境有很大不同。根据地下矿山和公路隧道的结构特点，可采用隧道和房柱两种渠道模式。然而，到目前为止，还没有关于地下矿山房柱式渠道的理论模型，现有的隧道渠道模型也不能提供源区近区和远区的解析解。提出了多模模型，给出了巷道中任意位置接收功率和功率延迟分布的解析表达式，并将多模模型与阴影衰落模型相结合，将多模模型扩展到描述井下房柱通道。通过实验测量对理论模型进行了验证。基于所提出的信道模型，分析了各种因素对信号传播的影响。这些因素包括：工作频率，隧道或地下矿房的大小，天线的位置和极化，以及电气参数。
Wireless networks can greatly facilitate the communication in underground mines and road/subway tunnels, where the propagation characteristics of electromagnetic (EM) waves are significantly different from those in terrestrial environments. According to the structure of underground mines and road tunnels, two types of channel models can be utilized, namely, tunnel and room/pillar channel models. However, there exists no theoretical model for room-and-pillar channel in underground mines to date, and current existing tunnel channel models do not provide an analytical solution for both near and far regions of the sources. In this paper, the multimode model is proposed, which provides an analytical expression for the received power and the power delay profile at any position in a tunnel.Moreover, the multimode model is extended to characterize the room-and-pillar channel in the underground mines after combining it with the shadow fading model. The theoretical models are validated by experimental measurements. Based on the proposed channel models, the effects of various factors on the signal propagation are analyzed. The factors include: the operating frequency, the size of the tunnel or underground mine room, the antenna position and polarization, and the electrical parameters.