Attenuation by a Human Body and Trees as well as Material Penetration Loss in 26 and 39 GHz Millimeter Wave Bands

Author:

Wang Qi1,Zhao Xiongwen123ORCID,Li Shu1,Wang Mengjun2,Sun Shaohui2ORCID,Hong Wei3

Affiliation:

1. School of Electrical and Electronic Engineering, North China Electric Power University, Beijing 102206, China

2. State Key Laboratory of Wireless Mobile Communications, China Academy of Telecommunications Technology (CATT), Beijing 100191, China

3. State Key Laboratory of Millimeter Wave, Southeast University, Nanjing 210096, China

Abstract

This paper investigates the attenuation by a human body and trees as well as material penetration loss at 26 and 39 GHz by measurements and theoretical modeling work. The measurements were carried out at a large restaurant and a university campus by using a time domain channel sounder. Meanwhile, the knife-edge (KE) model and one-cylinder and two-cylinder models based on uniform theory of diffraction (UTD) are applied to model the shape of a human body and predict its attenuation in theory. The ITU (International Telecommunication Union) and its modified models are used to predict the attenuation by trees. The results show that the upper bound of the KE model is better to predict the attenuation by a human body compared with UTD one-cylinder and two-cylinder models at both 26 and 39 GHz. ITU model overestimates the attenuation by willow trees, and a modified attenuation model by trees is proposed based on our measurements at 26 GHz. Penetration loss for materials such as wood and glass with different types and thicknesses is measured as well. The measurement and modeling results in this paper are significant and necessary for simulation and planning of fifth-generation (5G) mm-wave radio systems in ITU recommended frequency bands at 26 and 39 GHz.

Funder

State Key Laboratory of Wireless Communications, China Academy of Telecommunications Technology

Publisher

Hindawi Limited

Subject

Electrical and Electronic Engineering

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