Radio Channel Measurements and Analysis at 2.4/5GHz in Subway Tunnels

作     者：LI Jinxing ZHAO Youping ZHANG Jing JIANG Rui TAO Cheng TAN Zhenhui 

作者机构：Institute of Broadband Wireless Mobile CommunicationsSchool of Electronics and Information EngineeringBeijing Jiaotong University 

出 版 物：《China Communications》 (中国通信（英文版）)

年 卷 期：2015年第12卷第1期

页      面：36-45页

核心收录：

学科分类：0810[工学-信息与通信工程] 080904[工学-电磁场与微波技术] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 080402[工学-测试计量技术及仪器] 0804[工学-仪器科学与技术] 081001[工学-通信与信息系统] 

基　　金：supported in part by the NSFC project under grant No.61132003 the Fundamental Research Funds for the Central Universities(2013JBZ002) the Ph.D.Program Foundation of Ministry of Education of China under grant No.20120009130002 

主　　题：broadband mobile communication channel measurement channel characteriza-tion subway tunnel 

摘      要：There is an increasing demand on wireless communications in subway tunnels to provide video surveillance and sensory data for security,maintenance and train control,and to offer various communication or entertainment services(e.g.,Internet,etc.) to passengers as *** wireless channel in tunnels is quite unique due to the confined space and the waveguide ***,modeling the radio channel characteristics in tunnels is critically important for communication systems design or *** paper investigates the key radio channel characteristics of a subway tunnel at 2.4 GHz and 5 GHz,such as the path loss,root mean square(RMS) delay spread,channel stationarity,Doppler shift,and channel *** field measurements show that channel characteristics in tunnels are highly location-dependent and there exist abundant components in Doppler shift *** the straight section of the subway tunnel,the measured path loss exponents are close to1.6,lower than that in free space.