双移动空地链路的真实信道和延迟系数生成--教程

IF 5.3 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC IEEE Open Journal of Vehicular Technology Pub Date : 2024-03-09 DOI:10.1109/OJVT.2024.3399072
Hongzhao Zheng;Mohamed Atia;Halim Yanikomeroglu
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引用次数: 0

摘要

信道和延迟系数是描述多径传播环境的两个基本参数。为了研究信号在具有严重多径效应的环境中传播时的信道特性,生成真实的信道和延迟系数至关重要。许多确定性信道模型,如射线追踪(RT),面临着计算复杂度高、几何信息数据要求高、不适用于空地链路等挑战,而基于非几何的随机信道模型(NGSCM)可能缺乏空间一致性,精度较低、我们将利用准确定性无线电信道发生器(QuaDRiGa),结合国际电信联盟(ITU)提供的状态持续时间模型,为城市地区双移动空地链路的信道建模提供一个可扩展的教程。该教程可在多径环境中为双移动空地链路生成真实的信道和延迟系数。我们从接收信号功率和振幅、多径延迟分布、延迟扩散和多普勒频谱等几个方面分析了生成的信道和延迟系数,从而验证了这项工作的准确性。
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Realistic Channel and Delay Coefficient Generation for Dual Mobile Space-Ground Links: A Tutorial
Channel and delay coefficient are two essential parameters for the characterization of a multipath propagation environment. It is crucial to generate realistic channel and delay coefficient in order to study the channel characteristics that involves signals propagating through environments with severe multipath effects. While many deterministic channel models, such as ray-tracing (RT), face challenges like high computational complexity, data requirements for geometrical information, and inapplicability for space-ground links, and nongeometry-based stochastic channel models (NGSCMs) might lack spatial consistency and offer lower accuracy, we present a scalable tutorial for the channel modeling of dual mobile space-ground links in urban areas, utilizing the Quasi Deterministic Radio Channel Generator (QuaDRiGa), which adopts a geometry-based stochastic channel model (GSCM), in conjunction with an International Telecommunication Union (ITU) provided state duration model. This tutorial allows for the generation of realistic channel and delay coefficients in a multipath environment for dual mobile space-ground links. We validate the accuracy of the work by analyzing the generated channel and delay coefficient from several aspects, such as received signal power and amplitude, multipath delay distribution, delay spread and Doppler spectrum.
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来源期刊
CiteScore
9.60
自引率
0.00%
发文量
25
审稿时长
10 weeks
期刊最新文献
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