Path Loss Modeling and Environment Features Powered Prediction for Sub-THz Communication

IF 3.5 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC IEEE Open Journal of Antennas and Propagation Pub Date : 2024-09-03 DOI:10.1109/OJAP.2024.3454120
Xi Liao;Ping Zhou;Yang Wang;Jie Zhang
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Abstract

Sub-Terahertz communication has broad application prospects for realizing ultra-broadband sixth generation (6G) system. One fundamental challenge when moving to new spectrum is to understand the science of radio propagation and propose an accurate and effective channel prediction method. In this paper, we first conduct extensive vector network analyzer-based radio propagation measurements at 140 GHz and 220 GHz in indoor hallway and lobby environments and at 280 GHz in an indoor laboratory environment. Omnidirectional and best directional path loss are modeled by empirical single-band and multi-band path loss models. Numerical results demonstrate that large-scale close-in model in this paper is simpler and more physically-based compared to floating-intercept model. In particular, a path loss prediction method based on environment features is proposed, which can predict path loss directly by utilizing random forest method, and the propagation environment are defined and extracted by scatterer features and related features of the transmitter and receiver. The performance of the proposed method is better than that of empirical path loss models. The measured results not only enrich the datasets of indoor sub-THz channel propagation, also can guide communication systems, network planning and deployment for 6G and beyond.
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超高频通信的路径损耗建模和环境特征预测
太赫兹以下通信在实现第六代超宽带(6G)系统方面具有广阔的应用前景。向新频谱发展的一个基本挑战是了解无线电传播科学,并提出准确有效的信道预测方法。在本文中,我们首先在室内走廊和大厅环境中的 140 GHz 和 220 GHz 频段,以及室内实验室环境中的 280 GHz 频段,进行了大量基于矢量网络分析仪的无线电传播测量。全向和最佳定向路径损耗通过经验单频和多频路径损耗模型进行建模。数值结果表明,与浮动截面模型相比,本文中的大规模近距离模型更简单、更基于物理原理。本文特别提出了一种基于环境特征的路径损耗预测方法,利用随机森林方法直接预测路径损耗,并通过散射体特征以及发射机和接收机的相关特征来定义和提取传播环境。所提方法的性能优于经验路径损耗模型。测量结果不仅丰富了室内 sub-THz 信道传播的数据集,还能为 6G 及以后的通信系统、网络规划和部署提供指导。
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来源期刊
CiteScore
6.50
自引率
12.50%
发文量
90
审稿时长
8 weeks
期刊最新文献
Front Cover Table of Contents Guest Editorial Introduction to the Special Section on Women’s Research in Antennas and Propagation Section (WRAPS) IEEE ANTENNAS AND PROPAGATION SOCIETY IEEE Open Journal of Antennas and Propagation Instructions for authors
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