User Manual
Airbridge cBTS3612 CDMA Base Station
System Description
5 System Configuration
5-8
For 3-sectors an d 6-sectors configuration, each sector needs one bi-polarization
antenna or two uni-polarization antennae.
For operation at 1900MHz, lightning arrester should be equipped for the antenna
system, while the tower-top amplifier is optional.
5.2 Typical Configurations
The cBTS3612 support 450MHz band, 800MHz band and 1900MHz band, the
typical configurations are listed as below.
I. Typical configuration of cBTS3612 for 450MHz band
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1 carrier omni cell, i.e. O(1).
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1 carrier
%
3 sectors, i.e. S(1/1/1).
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2 carriers
%
3 sectors, i.e. S(2/2/2).
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3 carriers
%
3 sectors, i.e. S(3/3/3).
II. Typical configuration of cBTS3612 for 800MHz band
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2 carriers omni cell, i.e. O(2).
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1 carrier
%
3 sectors, i.e. S(1/1/1).
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4 carriers
%
3 sectors, i.e. S(4/4/4).
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2 carriers
%
6 sectors, i.e. S(2/2/2/2/2/2).
5.2.1 Typical Configuration of cBTS3612 for 450MHz Band
The duplex supported currently in this band is CDU and DFU.
I. O(1) Configuration
The configuration of cBTS3612 for O(1) includes:
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1 BCIM, 1 BRDM, 1-2 BCKMs, and BCPM can be configured according to
actual requirement.
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2 power supply modules.
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2 unipolarized omni antennas.
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The configuration of the RF modules is shown in Figure 5-6.
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Logic connection of RF modules is shown in Figure 5-7.