SHAPING THE FUTURE OF SATELLITE COMMUNICATIONS
• The demodulator characteristics;
• Margin information pushed from the modulator side;
• The measured EsNo of the received signal;
• NoDE
®
(Noise and Distortion Estimator) link margin.
If the demodulator concludes that another ModCod than the current used one is
optimal, he sends a feedback message to the modulator with a request for the new
ModCod.
Point to Multi Point
Figure 75 - Point to Multipoint
In point to multipoint networks we use an EL860 controller and shaper to manage
multiple ACM controllers.
The demodulators of the different sites provide their feedback to the EL860. The
corresponding ACM controller changes the ModCod according to this feedback.
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