USER MANUAL FOR RA-7100
RA-7100 II2 QI
Copyright - refer to title page
Page 12
ENU Status : 1-0-0
2 EQUIPMENT DESCRIPTION
2.1 SYSTEM
DIAGRAM
Optical Fiber
MU
Optical Fiber Fed Application
Distributed
Antenna
System
1900MHz BTS
850MHz BTS
Downlink Coaxial Cable
Optical Fiber
Distributed
Antenna
System
Distributed
Antenna
System
Distributed
Antenna
System
RU
RU
RU
RU
Uplink Coaxial Cable
Figure 4: MU System Diagram
As shown in the above figures, the separate or combined signals as 850MHz and 1900MHz from the
BTSs are received and converted into optical signals after amplification in the MU.Then the optical
signals are transmitted to the RU via optical fiber. The Optical TX/RX Module of RU converts the DL
optical signals into RF signals. After amplification, the signals are transmitted at the MT port to the
service antenna.
On the UL, the signals transmitted by the mobile are converted into optical signals, and then via the
UL optical fiber. The signals are transmitted to MU, which then converts the optical signals back to RF
signals. After amplification, the signals are transmitted back to the BTS.
