Terahertz communications can work in rain and snow: impact of adverse weather conditions on channels at 140 GHz

Terahertz communications can work in rain and snow: impact of adverse weather conditions on channels at 140 GHz
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太赫兹通信可在雨雪中工作:恶劣天气条件对 140 GHz 信道的影响

DOI:
10.1145/3555077.3556470
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发表时间:
2022
期刊:
mmNets '22: Proceedings of the 6th ACM Workshop on Millimeter-Wave and Terahertz Networks and Sensing Systems
影响因子:
--
通讯作者:
Jornet, Josep M.
Jornet, Josep M.
中科院分区:
--
文献类型:
--
作者:
Sen, Priyangshu;Hall, Jacob;Polese, Michele;Petrov, Vitaly;Bodet, Duschia;Restuccia, Francesco;Melodia, Tommaso;Jornet, Josep M.

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下一代无线网络将利用100 GHz以上的频谱,在多GHz宽的带宽上实现超高数据速率通信。然而,如此高频率的传播环境在整个协议栈设计中引入了挑战,从物理层信号处理到应用程序设计。因此,在实际部署场景和超宽带上,对信道传播和衰落特性有一个全面的了解是至关重要的。在本文中,我们进行了广泛的测量活动,以评估在130-150 GHz频段的无线链路上的天气条件的影响,通过一个典型的城市回程的情况下,在晴朗的天气,雨,雪的信道探测活动。我们提出了一种新的信道探测器设计,捕获信号与-82 dBm的灵敏度和20 GHz的带宽。我们分析了链路预算,容量,以及信道参数,如延迟扩展和K因子。我们的实验结果表明,在所考虑的上下文中,不利天气不会中断链接,但会引入一些额外的约束(例如,高延迟扩展和雪条件下路径损耗的增加),这在设计100 GHz以上的可靠第六代(6 G)通信链路时需要考虑。
Next-generation wireless networks will leverage the spectrum above 100 GHz to enable ultra-high data rate communications over multi-GHz-wide bandwidths. The propagation environment at such high frequencies, however, introduces challenges throughout the whole protocol stack design, from physical layer signal processing to application design. Therefore, it is fundamental to develop a holistic understanding of the channel propagation and fading characteristics over realistic deployment scenarios and ultra-wide bands. In this paper, we conduct an extensive measurement campaign to evaluate the impact of weather conditions on a wireless link in the 130-150 GHz band through a channel sounding campaign with clear weather, rain, and snow in a typical urban backhaul scenario. We present a novel channel sounder design that captures signals with -82 dBm sensitivity and 20 GHz of bandwidth.We analyze link budget, capacity, as well as channel parameters such as the delay spread and the K-factor. Our experimental results indicate that in the considered context the adverse weather does not interrupt the link, but introduces some additional constraints (e.g., high delay spread and increase in path loss in snow conditions) that need to be accounted for in the design of reliable Sixth Generation (6G) communication links above 100 GHz.
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