Analysis on capacity of urban rail transit train-wayside communication

被引：0
|
作者：
Jiang, Hai-Lin [1 ]
Wang, Hong-Wei [2 ]
Gao, Chun-Hai [1 ]
Tang, Tao [2 ]
机构：
[1] School of Electronics and Information Engineering, Beijing Jiaotong University, Beijing,100044, China
[2] State Key Laboratory of Rail Traffic Control and Safety, Beijing Jiaotong University, Beijing,100044, China
来源：
Tiedao Xuebao/Journal of the China Railway Society | 2014年 / 36卷 / 08期
关键词：
In current train-wayside communication systems applied in urban rail transit; there exist two propagation mediums; i; e; the leaky waveguides and wireless free waves. In this paper; the two different communication modes were described. The channel model of leaky waveguids was analyzed and shown to be approximate to the Gaussian channel. The channel capacity of 2×2 MIMO antennas with LOS components in the elevated rail environment was studied and the optimal antenna spacing distances were calculated according to theoretical derivation. At last the channel capacities of the two propagation mediums were compared. The results show that the channel capacity of 2×2 MIMO is better than that of leaky waveguides;
D O I：
10.3969/j.issn.1001-8360.2014.08.008
中图分类号：
学科分类号：
摘要：
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页码：44 / 48
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