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CDD-880 Multi Receiver Router
Appendix G
G.3.2.2
DPC with ACM and Hub Backoff
If hub fade is known, the transmit power is allowed to increase beyond rated maximum power
and up to backoff power, possibly preventing degraded performance by not modifying MODCOD
under ACM control.
The Figure G-7 graph depicts DPC with hub backoff:
•
As C/N decreases, output power increases until terminal maximum power or backoff limit is
achieved, clamping power change.
•
Depending on the amount of fade, the MODCOD may not change.
Figure G-6. Hub Rain Fade
Figure G-7. DPC w/ACM with Hub Backoff
G–13
MN-CDD880
Revision 2
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