Propagation characteristics of wideband high-speed railway channel in viaduct scenario at 2.35 GHz  

作　　者：Yunling GUO Jianhua ZHANG Cheng TAO Liu LIU Lei TIAN 

机构地区：[1]Key Laboratory of Universal Wireless Communications (Ministry of Education), Wireless Technology Innovation Institute, Bei-jing University of Posts and Telecommunications [2]Institute of Broadband Wireless Mobile Communications, Beijing Jiaotong University

出　　处：《Journal of Modern Transportation》2012年第4期206-212,共7页现代交通学报（英文版）

基　　金：supported by the National Science & Technology Pillar Program(No.2012BAF14B01);the National Natural Science Foundation of China(No.61171105);China Mobile Research Institute

摘　　要：In order to obtain accurate characteristics of wireless channels in the viaduct area of China, a channel meas- urement was taken in a railway viaduct scenario of the Zhengzhou-Xi＇an passenger dedicated line with a bandwidth of 50 MHz at 2.35 GHz. The single-slope log-distance model is used to analyze the path-loss （PL）, and the distribution of shadow fading （SF） is obtained by statistical methods, which shows that the normal distribution fits the samples well. Ricean K-factor is analyzed by the method of moments, and the variation of K-factor is given along the measured route. Small scale such as delay spread and Doppler behavior are parameterized. Based on empirical channel measurement, this paper provides parameters for the evaluation and simulation work on viaduct scenarios of high-speed railway.In order to obtain accurate characteristics of wireless channels in the viaduct area of China, a channel meas- urement was taken in a railway viaduct scenario of the Zhengzhou-Xi＇an passenger dedicated line with a bandwidth of 50 MHz at 2.35 GHz. The single-slope log-distance model is used to analyze the path-loss （PL）, and the distribution of shadow fading （SF） is obtained by statistical methods, which shows that the normal distribution fits the samples well. Ricean K-factor is analyzed by the method of moments, and the variation of K-factor is given along the measured route. Small scale such as delay spread and Doppler behavior are parameterized. Based on empirical channel measurement, this paper provides parameters for the evaluation and simulation work on viaduct scenarios of high-speed railway.

关 键 词：high-speed railway channel measurement VIADUCT path-loss delay spread Ricean K-factor DOPPLER 

分 类 号：U285.2[交通运输工程—交通信息工程及控制]