A Survey on Channel Measurements and Models for Underground MIMO Communication Systems  

作　　者：Asad Saleem Yejun He Guoxin Zheng Zhining Chen 

机构地区：[1]State Key Laboratory of Radio Frequency Heterogeneous Integration,Guangdong Engineering Research Center of Base Station Antennas and Propagation,Shenzhen Key Laboratory of Antennas and Propagation,College of Electronics and Information Engineering,Shenzhen University,Shenzhen 518060,China [2]Key Laboratory of Specialty Fiber Optics and Optical Access Networks,Shanghai University,Shanghai 200444,China [3]Department of Electrical and Computer Engineering,National University of Singapore,Singapore

出　　处：《China Communications》2023年第8期103-119,共17页中国通信（英文版）

摘　　要：The high reliability of the communication system is critical in metro and mining applications for personal safety,channel optimization,and improving operational performance.This paper surveys the progress of wireless communication systems in underground environments such as tunnels and mines from 1920 to 2022,including the evolution of primitive technology,advancements in channel modelling,and realization of various wireless propagation channels.In addition,the existing and advanced channel modeling strategies,which include the evolution of different technologies and their applications;mathematical,analytical,and experimental techniques for radio propagation;and significance of the radiation characteristics,antenna placement,and physical environment of multiple-input multiple-output(MIMO)communication systems,are analyzed.The given study introduces leaky coaxial cable(LCX)and distributed antenna system(DAS)designs for improving narrowband and wideband channel capacity.The paper concludes by figuring out open research areas for the future technologies.

关 键 词：leaky coaxial cable(LCX) long-term evolution for metro(LTE-M) multiple-input multipleoutput(MIMO)systems propagation modeling 

分 类 号：TN929.5[电子电信—通信与信息系统]