Ericsson Radio Systems AB PKRC1311004-1 Manual De Usuario
Radio Configurations, RBS 2206
Figure 3
An example of an RBS 2000 servicing a three-cell site
4.1.2
Radio Base Station
The Radio Base Station 2000 (RBS 2000) is Ericsson’s second
generation of RBSs developed to meet the GSM specifications for BTSs.
generation of RBSs developed to meet the GSM specifications for BTSs.
4.2
References
/GSM:05.05/
GSM Requirements 05.05 phase 2+ Radio
Transmission and Reception.
Transmission and Reception.
/GSM:05.08/
GSM Requirements 05.08 phase 2+ Radio
Subsystem Link Control.
Subsystem Link Control.
4.3
Definitions
Tower Mounted Amplifier (TMA)
The TMA compensates for signal loss in the receiver antenna cables,
reduces system noise and improves uplink sensitivity. The TMA can
consist of a duplex filter. Duplex is the function that allows
communication in two directions (sending and receiving) on one
channel.
reduces system noise and improves uplink sensitivity. The TMA can
consist of a duplex filter. Duplex is the function that allows
communication in two directions (sending and receiving) on one
channel.
The TMA used for 12 TRX products is Dual Duplex TMA (ddTMA).
Antenna Reference Point
The antenna reference point is the point where the radio signal crosses
the RBS border, that is, the connector for the antenna feeder. See the
figure below.
the RBS border, that is, the connector for the antenna feeder. See the
figure below.
Note:
The TMA is inside the RBS border.
32 (421)
EN/LZT 720 0008
R1A
2001-06-26
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