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Feature Descriptions MDM6000 Satellite Modem
14.8.3.3 Improved AUPC Mechanism (implemented in the MDM6000 and
MCD6000)
The current implementation of the AUPC in the MDM6000 and MCD6000 represents an improved
AUPC mechanism using two parameters EsN0 as well as signal power and an elaborate processing
determines the uplink power control corrections, which allows to distinguish between gain changes,
interferences and fading.
For a link setup that is uplink noise limited, this results in a simple reliable AUPC mechanism without
the need of a beacon receiver.
14.8.4 AUPC
Newtec's AUPC mechanism provides an improved algorithm in the sense that it not only looks at the
Es/No but also at signal power and at the real link margin. Based on that, the modem can determine
whether or not fading is caused by uplink or downlink fading, as long as the link is setup in a correct
manner and that it is uplink limited in the link budget.
In case of downlink fading within a certain range, very little degradation is expected, since the link is
uplink limited. FlexACM kicks in for large fades to maintain a service continuity in case of higher
fading levels.
The advantages of Newtec's AUCP are:
• Built-in into the modem or network optimizer;
• Larger range than traditional systems;
• Combines with ACM (FlexACM);
• Able to distinguish different link impairments such as interference from rain fading events. This
leads to a reliable operation under uplink noise limited link budget setups."
14.8.5 AUPC Configuration
The configuration of AUPC must be done in close relationship with the satellite operator. Please
make an appointment with your satellite operator before starting this configuration.
It is mandatory to stay in contact with your satellite operator during configuration of
the AUPC feature.
This because the PEB (Power Equivalent Bandwidth) should be respected at all time.
The satellite operator will monitor this during the configuration.
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