Measurements And Modeling Of Human Blockage Effects For Multiple Millimeter Wave Bands

With the development of wireless communication systems,we are now facing the shortage of the frequency resource below 6 GHz.The development of the fifth generation(5G)wireless communication system raises new demand for spectrum resources.Due to the large bandwidths.high data rate,high transmission qulity,high transmission safety and miniaturization of the device,millimeter-wave wirless communication has been a key technology for the 5G wireless communication.Millimeter-wave is likely to be used for indoor scenarios due to the high attenuation and the poor diffractive ability.For indoor wireless communication,the height of transmitting antenna is low.and the transmitting power is small,especially for millimeter-wave bands,thus the blockage effects caused by human body in the environment will be severe.In order to establish an accurate channel model for indoor millimeter-wave wireless communication,it is necessary to measure and model the human blockage effect.This paper focuses on the measurement and modeling of the human blockage effect of one or two persons in the millimeter-wave indoor wireless communication system of multiple bands(11 GHz,16 GHz,26 GHz,28 GHz,32 GHz).Firstly,this paper summarizes the development of communication and the characteristics of millimeter-wave band communication.Secondly,channel measurement.channel parameter extraction,channel modeling,and channel characteristics are summarized.Thirdly,exsiting measurement campaigns and four kinds of common models for the blockage effect caused by human body are researched,which are the knife edge diffraction(KED)model proposed by METIS(mobile and wireless communications enablers for the twenty-twenty information society),the KED model using the Kirchhoff diffraction equation,the geometric theory of diffraction(GTD)model and the Gaussian fitting model.Finally,this paper introduces the measurement environment,measurement platform equipment,measurement basic operation,data processing,and modeling of loss in multiple bands and multiple blockage situations in millimeter-wave indoor wireless communication.Then draw the conclusion.In this paper,the main work is summarizing the existing researches on the human blockage effect in millimeter-wave indoor wireless communication,and developing four kinds of measurement programs based on the human blockage effect models which measured 11 GHz,16 GHz,26 GHz,28 GHz,and 32 GHz frequency band.The corresponding conclusions are obtained through the analysis and comparison of the measurement results and the simulation results.