User's Manual

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4.1.4 Function by unit
1) Remote Drive Unit (RDU)
When receiving TX signals from each band through Remote Optic, RDU filters the signals and
amplifies them with High Power Ampifier. The unit also filters RX signals given through cavity
filter and amplifies them to send the signals to Remote Optic.In the unit, there is ATT to adjust
gain. RDU consist of RFU, PAU and cavity duplexer like below figure and all modules are
merged with one package
PAU
RFU
DUPLEXER
Figure 4.5 – RDU Outer Look
RDU devices are varied for each frequency band, including the following:
No Unit naming Description
Frequency
TX RX
1 1900PCS RDU44.5 Single band 1930-1995MHz 1850-1915MHz
2 850CEL RDU44.5 Single band 869-894MHz 824-849MHz
3 700LTE RDU44.5 Single band 728-756MHz
698-716MHz
777-787MHz
4 AWS-1 RDU44.5 Single band 2110-2155MHz 1710-1755MHz
5 700PS RDU44.5 Single band 758-775MHz 788-805MHz
6 800I/PS RDU44.5 Single band 851-869MHz 806-824MHz
7 900I RDU44.5 Single band 929-941MHz 896-902MHz
8 700LTE MIMO RDU 44.5 Single band 728-756MHz
698-716MHz
777-787MHz