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Measured and modelled corner diffraction at millimetre wave frequencies

机译：在毫米波频率下测量和建模的角衍射

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摘要

Due to spectrum congestion in the commonly used mobile sub-6GHz frequencies, research and measurements in the Millimetre Wave (30-300GHz) bands are required to better understand the medium for 5G and beyond wireless connectivity. In this paper corner diffraction is investigated for an indoor environment in a modern building using a wideband (2GHz) channel sounder at 60GHz. Corner diffraction was measured at five different distances from the corner of interest, with parallel tracks at distances of 0.5m, 1m, 1.5m, 2m and 10m. These measurements were then compared with a Knife Edge Diffraction (KED) model where a `good-fit' was observed. Results showed that for 2m parallel tracks the power fell by 30dB as the user moved just 0.5m into the shadow region. For a 10m parallel track, the same effect was observed after moving 1.2m into the shadow region. Such rapid changes in received power can adversely affect the performance of link adaptation and beam tracking algorithms as well as the efficiency of the higher layer network protocols.
机译：由于常用的移动6 GHz以下频率中的频谱拥塞，因此需要对毫米波（30-300GHz）频段进行研究和测量，以更好地了解5G和无线连接以外的介质。在本文中，我们使用60GHz的宽带（2GHz）信道探测仪研究了现代建筑中室内环境的角落衍射。在距感兴趣角的五个不同距离处测量了角衍射，并在距离0.5m，1m，1.5m，2m和10m的平行轨道上进行了测量。然后将这些测量值与刀刃衍射（KED）模型进行比较，在该模型中观察到“良好拟合”。结果表明，对于2m的平行轨道，用户仅将0.5m移入阴影区域，功率下降了30dB。对于10m的平行轨道，将1.2m移至阴影区域后，会观察到相同的效果。接收功率的这种快速变化会不利地影响链路自适应和波束跟踪算法的性能，以及更高层网络协议的效率。

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