Abstract：Research purposes : In order to satisfy the demands of mobile communication consumer in metro, the mobile communication system signals will be distributed in the metro. As the space environment in the metro underground station is narrow and irregular extremely in shape , the blind spots of signal for mobile communication system in the metro underground station will be produced by reflection wave and refraction wave. This paper aims at studying the covering type of electromagnetic wave field strength in the concourse from the theory to reduce the blind spot of signal and guide the design antenna arrangement.
Research conclusions: In this paper, the analysis has been made on electric wave transmission performance in free space and the multipath effect is produced by reflection wave and refraction wave. The field strength distributing curve is drawn by theoretical calculation，and the blind spots of signal are analyzed, so the viewpoint of that multi-antennae signal covering with 99% of area is put forward. If the signals of multiple networks are distributed in the metro, it is impossible to separately establish the network for each system, accordingly the concept that the multiple networks signals are combined into one network is used for the design of antenna subsystem for attaining the best result.
陶孟华. 地铁内移动通信信号的分析和计算[J]. 铁道工程学报, 2008, 25(8): 84-88.
TAO Meng-hua. Analysis and Calculation of Mobile Communication Signal in Metro Station. 铁道工程学报, 2008, 25(8): 84-88.
2008, Vol. 25 
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