Local Power Estimation in High-Speed Railway Communications

被引：0
|
作者：
Zhang, Bei [1 ]
Wang, Ting [1 ]
Chen, Ruifeng [2 ]
Yang, Mi [1 ]
机构：
[1] Beijing Jiaotong Univ, State Key Lab Rail Traffc Control & Safety, Beijing, Peoples R China
[2] China Acad Railway Sci, Inst Comp Technol, Beijing, Peoples R China
来源：
2018 12TH INTERNATIONAL SYMPOSIUM ON ANTENNAS, PROPAGATION AND ELECTROMAGNETIC THEORY (ISAPE) | 2018年
关键词：
High speed railway; Doppler effect; Local power; Ricean fading; Shadow fading correlation; MODEL; VIADUCT;
D O I：
暂无
中图分类号：
TN [电子技术、通信技术];
学科分类号：
0809 ;
摘要：
Local power estimation is essential in high-speed railway (HSR) communications. By applying the Lee's criteria and correlated shadow fading in HSR environments, we derive the lower and upper bounds of the averaging length (AL) in Ricean fading for the f rst time. With real measurement data, we f nd that the AL should be selected from about 12 to 72 wavelengths and the required sampling number changes from 28 to 88 in typical HSR scenarios. Moreover, by this method, the conf dence level is improved up to 99%. Finally, the impact of mobility on local power estimation is studied. It is found that sampling time monotonically decreases with the increase of train's speed.
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页数：4
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