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ZXSDR R8860 Technical Manual
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Filters the forward RF signal to be sent.
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Reports
alarms to the
.
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In the case of main/diversity combined cabinets, the main receive LNA output end of
the FL has the power splitter function and reserves an external port (RXout).
2.2.3 Transceiver (TR)
The Transceiver (
) is the main control module of ZXSDR R8860.
It performs
communication, control, alarm, and version management for ZXSDR R8860.
Following are the functions of the TR module.
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Forward link processing
à
Conversion from baseband signal to RF signal
à
Conversion of output IQ data format
à
Power calibration and detection processing
à
Peak clipping/digital pre-distortion processing
à
Digital IF processing
à
Gain adjustment (calibration)
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Reverse link processing
à
Conversion from RF signal to baseband signal
à
Digital IF processing
à
and
report
à
In-band anti-interference function
à
Spectrum report
à
Automatic gain control (AGC)
à
Output IQ data format conversion
à
Supports switching between different receive channel signals in the case of
main/diversity combined cabinets
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Clock processing
Performs clock recovery for data on the
between the ZXSDR R8860 and the
BBU generating a reference clock source and performs phase lock for the reference
clock by utilizing a local high-stability clock. The working clocks generated include
the master clock, frame- frequency clock, digital processing clock, and RF baseband
clock.
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Monitoring
à
PA forward power detection function:
when the temperature threshold is
exceeded, the TR reports the relevant alarm and controls the PA through the PA
output enable/disable signal.
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SJ-20100722143906-001|08/30/2010
ZTE Proprietary and Confidential