DVB-S2 CCM vs. VCM
Case 1
•
Point to Multi-Point networks that use CCM must have all sites
receiving the same Coding and Modulation
•
Networks where all sites have the same EIRP or where antennas
have been sized to compensate for satellite contours use CCM
Case 2
•
Some Point to Multi-Point networks have multiple sites that fall on
different EIRP contours but have the same size antennas
•
These sites can benefit from Variable Coding and Modulation (VCM)
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