双移动星地链路真实信道与延迟系数生成——教程
Realistic Channel and Delay Coefficient Generation for Dual Mobile Space-Ground Links - A Tutorial-
AI总结：
本文提出基于QuaDiRGa与ITU状态持续时间模型的双移动星地链路信道建模教程，实现真实信道与延迟系数生成，并通过功率、延迟分布、延迟扩展和多普勒频谱验证其准确性。
摘要：
信道系数和延迟系数是表征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。虽然许多确定性信道模型（如射线追踪（RT））面临计算复杂度高、几何信息数据需求大以及不适用于星地链路等挑战，而非基于几何的随机信道模型（NGSCMs）可能缺乏空间一致性且精度较低，但本文提出了一个可扩展的教程，用于城市地区双移动星地链路的信道建模。该教程利用准确定性无线电信道生成器（QuaDiRGa）——它采用基于几何的随机信道模型（GSCM）——并结合国际电信联盟（ITU）提供的状态持续时间模型。本教程能够在多径环境中为双移动星地链路生成真实的信道和延迟系数。我们通过分析生成的接收信号功率与幅度、多径延迟分布、延迟扩展和多普勒频谱等多个方面，验证了该工作的准确性。
英文摘要：
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.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
