Point Cloud-Based Prediction Models of Dynamic Human Body Shadowing at 58 GHz

IF 3.5 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC IEEE Open Journal of Antennas and Propagation Pub Date : 2024-04-29 DOI:10.1109/OJAP.2024.3394730
Chechia Kang;Xin Du;Jun-Ichi Takada
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Abstract

As one of the channels used by the wireless gigabit (WiGig) protocol, a 58 GHz band has been deployed to realize a data rate of up to 100 gigabits per second (Gbps). Systems at the 58 GHz band point the main beam of the base station toward the mobile stations but suffer from a deep fading due to human body shadowing (HBS). To precisely predict the HBS channel considering the short wavelength at 58 GHz, a simulation method considering the detailed human geometry is needed. This paper proposes screen models and an elliptic cylinder model based on the instantaneous point clouds (PC) of human geometry for the HBS channel simulation using the uniform theory of diffraction (UTD). The proposals enable fair evaluation via a simultaneous measurement of the HBS channel and the PC. The HBS gains at the 58 GHz band in an indoor environment (6.5 m) between the measured and the simulated results based on the proposed models are compared. Compared with the conventional human model, the screen models are suitable for predicting the propagation channel cut-off by tracing the changing posture of the human body, and the elliptic cylinder model is suitable for predicting the shadowing distance by a 75% improvement.
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基于点云的 58 千兆赫动态人体阴影预测模型
作为无线千兆位(WiGig)协议使用的信道之一,58 千兆赫频段已被用于实现高达每秒 100 千兆比特(Gbps)的数据传输速率。58 GHz 频段的系统将基站的主波束指向移动站,但由于人体阴影(HBS)的影响,系统会出现深度衰减。考虑到 58 GHz 波长较短,要精确预测 HBS 信道,需要一种考虑到人体几何细节的模拟方法。本文提出了基于人体几何瞬时点云(PC)的屏幕模型和椭圆圆柱体模型,利用均匀衍射理论(UTD)进行 HBS 信道模拟。这些建议可通过同时测量 HBS 信道和 PC 进行公平评估。比较了室内环境(6.5 米)中 58 GHz 频段的 HBS 增益,以及基于建议模型的测量和模拟结果。与传统人体模型相比,屏幕模型适用于通过追踪人体姿态变化来预测传播信道截止点,而椭圆圆柱体模型适用于预测阴影距离,提高了 75%。
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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 IEEE Open Journal of Antennas and Propagation Instructions for authors Guest Editorial: Antenna-Enabled Sensors and Systems, the New Frontier in Sustainable Wireless Systems IEEE ANTENNAS AND PROPAGATION SOCIETY
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