User's Manual

ICS Repeater for Mobile WiMAX
Page
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1.2. Up Link
ICU
FEU
AMP AMP AMP
DL-PAU
AMPAMP
UL-PAU
Donor Antenna
Sevice Antenna
figure 1- 2 Uplink path
In the uplink path, a signal originating from the UE is separated from the downlink signal via the
FEU(Front end Unit) switch by switching controller. It is forwarded to the ICU(interference
cancellation unit) by FEU switch. The ICU down-converts the signal to base-band, digital filters it
amplifies it and the up-converts it. In addition the interference cancellation system algorithm (ICS
algorithm) is implemented in the ICU.
Finally, the signal is sent to the final amplifier by FEU switch and is separated from the downlink
input signal in the FEU switch.