Modulation and Coding
Improvements
•
Modulation improvements:
–
Improvements have focused on structure of
constellation
–
Constellations have been optimized for throughput
and to minimize effects of amplifier compression
•
Coding gains:
–
Processors, chip design and speed now make
coding gains approach theoretical limits
–
Tradeoffs between coding gain and latency still
exist
Comtech Proprietary & Confidential
7
