MTI Co. Ltd. RF25-MWM101 ユーザーズマニュアル

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BDA Installation and Operating Guide 
Version 1.0                                                                          6 
1.1 Introduction 
 
The mobile coverage extension solution is used to extend coverage to specific areas 
within a building, multiple buildings, or subway. This coverage extension system solution 
features useful combination that distributes wireless coverage over RF cable and 
antennas, making the best choice for signal quality, flexibility, and overall performance. 
The mobile coverage extension product family offers service providers a flexible, low 
cost, easy installation to improve customer retention and offer enhanced services to 
meet increasing subscriber demands.
 
 
1.2 Site 
Selection 
 
Depending on RF environment and size of space, output power of the BDA and number 
of antennas are decided for optimum service. For instance, an OMNI antenna (service) 
is connected to a small BDA for a small room, two or three OMNI antennas are con-
nected to a medium BDA, or several antennas are distributed in couple of floors of a 
building if a large BDA is installed.   
Recommendation to choose installation topology as below; 
 
 
Figure 1 BDA Solution for in-building 
 
z
  Less interference from other BTS Cells 
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  Easy access and maintenance of the equipment   
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  Avoiding direct sunlight to protect equipment 
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  Easy access to electrical power 
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  A shadow and cool environment