User Manual

Channel Selective CDMA Repeater
A cabinet (the left part in Figure 5-2) for a channel selective CDMA
repeater can be equipped with two pair of CSA and PA boards, one pair
for downlink (DL) and one pair for uplink (UL). The described cabinet
has a capacity of two bi-directional CDMA carriers.
The cover (the right part in Figure 5-2) can be equipped as well. The
cover board positions are shown in the figure.
CSA boards are used for IS-95 or J-STD-008 types of CDMA systems.
Main units: ALI Alarm Interface board
CSA Channel Selective Amplifier board, CDMA type
CU Control Unit board
DC Directional Coupler
DPX Duplex filter
LNA Low Noise Amplifier
PA Power Amplifier board
PSU Power Supply Unit
123 4
567 8
CSA
DL
(2 carr.)
MS
Mobile station
antenna
BS
Base station
antenna
PA
DL
CSA
UL
(2 carr.)
PA
UL
LNA DL
Downlink
LNA UL
Uplink
DPX
MS
DC
MS
CU
ALI
DC
BS
DPX
BS
PSU
CSA
DL
(2 carr.)
PA
DL
CSA
UL
(2 carr.)
PA
UL
Figure 5-2. Channel selective CDMA repeater
ALLGON System AB AR Repeaters Functional Description
User’s Manual VD203 66/EN Rev. P1A 2000-09 5 - 5