Manual Part 3

RBS 2207Radio Configurations
Figure 2 An example of an RBS 2000 servicing a three-cell site
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 BT Ss.
2 References
3GPP TS 45:005
Digital cellular telecommunications system (Ph ase 2+);
Radio tran smission and reception (3GPP TS 45:00 5
Release 4).
3GPP TS 45:008
Digital cellular telecommunicatio ns syst em (Phase
2+); Radio subsystem link con trol (3GPP TS 45:008
Release 4).
3 Definition s
Tower Mounted Amplifier (TMA )
The TMA compensates for signal loss in the receiver antenna cables, reduces
system noise and imp ro ves uplink sensitivity. The TMA can consist of a duplex
filter. Duplex is the function that allows communica tion in two dire ctions
(sending and receiving) on one channel.
The TMAs used are Dual Duplex TMA (ddTMA).
4 (14)
E
N/LZT 720 0135 Uen R3A