Function

A WRFUe performs the following functions:

• Performs the direct frequency conversion on the transmitting channel, and modulates baseband signals to RF signals. After being filtered, amplified, or combined, the RF signals are sent by the duplex filter to the antenna for transmission.
• Receives RF signals from the antenna system and then down-converts the received signals to IF signals. After being amplified, analog-to-digital converted, digital down-converted, matched filtered, and automatic gain control (AGC) processed, the IF signals are sent to the BBU for further processing.
• Performs power control and VSWR test.
• Performs reverse power control.
• Synthesizes frequencies and tests loops.
• Generates the CPRI clock, recovers the CPRI clock from out-of-synchronization, and detects alarms.

Indicator

The following table describes the indicators on the WRFUe panel.