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A new VLC channel model for underground mining environments

机译：适用于地下采矿环境的新VLC通道模型

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Due to the frequent dramatic disasters of underground mining collapses, the establishment of a reliable communication system in the underground mining environment is of vital importance. Instead of using the conventional wired and radio communication systems, researchers have considered the use of visible light communication (VLC) for underground mining communications (UMCs). In this paper, we extend the recursive method to model VLC propagation channel and focus on two different parts of underground mining communication, namely the working face and mining roadway. Both the required illuminance and VLC channel characteristics are thoroughly investigated for miner-to-miner (M2M) and infrastructure-to-miner (I2M) communication scenarios. It is shown that the illumination standard requirements can be fulfilled in the two parts and the mining roadway is brighter than the working face environment. Furthermore, VLC channel characteristics, such as the channel gain, mean excess delay, root mean square (RMS) delay spread, are thoroughly investigated. It is found that the proposed channel model is sufficiently accurate when taking the line-of-sight (LoS) and the first order reflections into consideration.
机译：由于地下采矿事故频发，灾难严重，因此在地下采矿环境中建立可靠的通信系统至关重要。研究人员已考虑将可见光通信（VLC）用于地下采矿通信（UMC），而不是使用常规的有线和无线电通信系统。在本文中，我们扩展了递归方法以对VLC传播通道建模，并着重于地下采矿通信的两个不同部分，即工作面和采矿巷道。针对矿工对矿工（M2M）和基础设施对矿工（I2M）的通信场景，对所需的照度和VLC通道特性都进行了彻底的研究。结果表明，这两部分都可以满足照明标准要求，并且采煤巷道比工作面环境要明亮。此外，还对VLC信道特性（例如，信道增益，平均过量延迟，均方根（RMS）延迟扩展）进行了深入研究。发现在考虑视线（LoS）和一阶反射时，建议的信道模型足够准确。

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