植被环境太赫兹信道测量与建模  

Terahertz Channel Measurement and Modeling in the Vegetation Environment

作　　者：崔家源 李达 宋雨恒 刘国昊 刘嘉诚 马建军[1,2] 孙厚军[1,2] CUI Jiayuan;LI Da;SONG Yuheng;LIU Guohao;LIU Jiacheng;MA Jianjun;SUN Houjun(School of Integrated Circuits and Electronics,Beijing Institute of Technology,Beijing 100081,China;Tangshan Research Institute,BIT,Tangshan 063099,China)

机构地区：[1]北京理工大学集成电路与电子学院,北京100081 [2]北京理工大学唐山研究院,唐山063099

出　　处：《微波学报》2024年第S1期354-357,共4页Journal of Microwaves

基　　金：国家自然科学基金(6207106,92167204,62072030)

摘　　要：植被是影响太赫兹(THz)波传播的关键因素。本文在植被环境下进行了THz信道测量,并建立了植被损耗信道模型。在茂密的丁香植被环境中进行了信道测量,采用了220 GHz至230 GHz的频率扫描测量和220 GHz的时序测量。基于频率扫描测量结果,使用植被面积指数(PAI)表示植被密度来建立信道模型,并生成仿真数据与测量数据进行比较。结果表明,该模型在理论预测方面具有准确性。此外,通过处理220 GHz的时序测量数据,得到了信噪比(SNR)变化的累积分布函数(CDF)图,并对CDF进行了拟合。结果表明,与Nakagami-m分布是最接近的,拟合优度可达到0.9978。Vegetation is a crucial factor influencing the propagation of terahertz(THz)waves.This paper measures the performance of THz channels in vegetation environments and establishes a vegetation-loss channel model for prediction.Channel measurements are conducted in a dense lilac vegetation environment,employing frequency sweep measurements from 220 GHz to 230 GHz and time series measurements at 220 GHz.Based on the frequency sweep measurement results,the channel model is established using the Plant Area Index(PAI)to represent vegetation density and predicted results are generated for comparison with the measured data.The results indicate that the model is efficient for theoretical prediction.Additionally,by processing the time series data at 220 GHz,Cumulative Distribution Function(CDF)graphs of the Signal-to-Noise Ratio(SNR)variations are obtained,and the CDF is fitted.The results show that it is the closest to the Nakagami-m distribution,and the goodness of fit can reach 0.9978.

关 键 词：太赫兹波 信道测量 信道建模 植被面积指数 累积分布函数 

分 类 号：TN011[电子电信—物理电子学]