Research On Propagation Performance Of 26 GHz Millimeter Wave In Indoor Wireless Channels

The local multipoint distribution service in mm-wave 26 GHz is a broadband wireless multipoint access technology gradually developed in recent years.And the mm-wave 26 GHz became the focus of attention of the major telecom operators because of the advantages of its rapid networking,less investment,higher bandwidth and flexible layout.This paper studies the channel propagation characteristics,the blockage attenuation of human bodies and the link performance of the wireless system in mm-wave 26 GHz,which has important reference significance for design and simulation of 26 GHz wireless communication system.The main works of this paper can be summarized as follows: First,we present the channel propagation mechanisms of 26 GHz mm-wave and three transmission mechanisms: reflection,scattering and diffraction,and we analyze the effect on field strength the different human models(edges,wedges and cylinders)produced,which has important significance for the modeling and simulation of wireless system.Second,mm-wave 26 GHz channel characteristics are analyzed based on experimental channel measurements performed for both LOS and NLOS scenarios.Specifically,channel parameters like power delay profiles(PDPs),rms delay spread,path loss and shadow fading are analyzed.Third,the blockage attenuation of human bodies are investigated based on 26 GHz indoor channel measurements,and we proposed 2-ray and 4-ray human blockage models by calculation of the Vogler's multiple knife-edge diffraction field.Finally,radio link budget is provided,which analyzed the system performance of 26 GHz Mm-wave in indoor wireless channels.This paper makes a comprehensive understanding and research for the 26 GHz mm-wave wireless channel propagation,which provide the reference for the simulation design of the 26 GHz channel modeling and wireless communication system.