降雪对太赫兹信道性能的影响：测量与建模洞察
Impact of snowfall on terahertz channel performance: measurement and modeling insights
AI总结：
本研究针对降雪条件下的视距太赫兹信道性能开展测量与理论研究，分析了多环境因素的影响，发现降雪会加剧功率损耗并引发功率快速波动且无显著多径效应，为太赫兹通信部署提供参考。
摘要：
在无线通信的发展领域中，对0.1至10太赫兹（THz）频段的太赫兹频谱研究已成为推进超高速数据传输技术的关键焦点。太赫兹无线通信技术的有效部署要求全面研究雨、雾、云、霾尤其是雪等多种大气条件下的信道性能，这些环境因素对从物理层信号处理到应用设计和战略网络规划的协议栈设计具有重大影响。深入理解真实环境中尤其是超宽带宽下的信道传播与衰落特性至关重要。本研究针对降雪条件下的视距（LoS）太赫兹信道性能开展了基于测量的综合理论研究，系统分析了信道功率与误码率（BER）的实测结果与预测结果，探讨了降雪率、载波频率、环境温度和相对湿度对信道性能的影响。研究结果表明，降雪条件不仅会加剧功率损耗，还会导致太赫兹信道功率水平快速波动；值得注意的是，这些场景下不存在显著的多径效应。该发现凸显了进一步研究雪花运动动力学及其与太赫兹传输路径相互作用的必要性。
英文摘要：
In the evolving domain of wireless communication, the investigation on terahertz (THz) frequency spectrum, spanning 0.1 to 10 THz, has become a critical focus for advancing ultra-high-speed data transmission technologies. The effective deployment of THz wireless communication techniques mandates a complete study of channel performance under various atmospheric conditions, such as rain, fog, cloud, haze, and notably, snow. These environmental elements significantly impact the design of the protocol stack, ranging from physical-layer signal processing to application design and strategic network planning. An in-depth understanding of channel propagation and fading characteristics in real-world environments, especially over ultra-wide bandwidths, is crucial. This work presents a comprehensive measurement-based and theoretical investigation of line-of-sight (LoS) THz channel performance in snowy conditions. It methodically examines both the empirical and predicted aspects of channel power and bit-error-ratio (BER). The effects of snowfall rate, carrier frequency, ambient temperature, and relative humidity on channel performance are analyzed and discussed. Our findings demonstrate that snowy conditions not only amplify power loss but also induce rapid fluctuations in the power levels of the THz channel. Notably, our results reveal an absence of significant multipath effects in these scenarios. This insight highlights the need for further research into the dynamics of snowflake movement and their interaction with THz transmission paths.
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