The document discusses satellite communication modulation schemes and their use cases. It mentions 8PSK modulation being used for space segment with 5Mbps throughput and no additional rain margin. It then discusses switching to 16APSK modulation for higher throughput up to 300+Mbps but with lower efficiency and sharing potential. Based on data rates and efficiency, it evaluates when different modulation schemes are best used for very high, medium, and high rate link applications.

9. 8PSK8PSK 8PSK
5Mbps 5Mbps 5Mbps 5Mbps
8PSK
threshold
8PSK
Rain margin

10. 8PSK8PSK 8PSK 8PSK
5Mbps 5Mbps 5Mbps 5Mbps
Rain margin

11. 8PSK8PSK 8PSK 8PSK
5Mbps 5Mbps 5Mbps 5Mbps
Rain margin

12. 8PSK8PSK 8PSK 8PSK
5Mbps 5Mbps 5Mbps 5Mbps
Rain margin

13. 8PSK8PSK 8PSK 8PSK
5Mbps 5Mbps 5Mbps 5Mbps
Rain margin

14. 8PSK8PSK 8PSK 8PSK
5Mbps 5Mbps 5Mbps 5Mbps
Rain margin

15. 8PSK8PSK 8PSK
5Mbps 5Mbps 5Mbps 5Mbps
8PSK
Rain margin

16. 8PSK8PSK 8PSK
5Mbps 5Mbps 5Mbps 5Mbps
8PSK
Rain margin

17. 8PSK8PSK 8PSK
5Mbps 5Mbps 5Mbps 5Mbps
8PSK
Rain margin

18. 8PSK8PSK 8PSK
5Mbps 5Mbps 5Mbps 5Mbps
8PSK
Rain margin

19. 8PSK8PSK 8PSK
5Mbps 5Mbps 5Mbps 5Mbps
8PSK
Rain margin

20. 8PSK8PSK 8PSK
5Mbps 5Mbps 5Mbps
8PSK
5Mbps
Rain margin

21. 8PSK8PSK 8PSK
5Mbps 5Mbps 5Mbps
8PSK
5Mbps
Rain margin

22. 8PSK8PSK 8PSK
5Mbps 5Mbps 5Mbps
Demod
unlock8PSK
5Mbps
Zero Mbps
Rain margin

23. 8PSK8PSK 8PSK
5Mbps 5Mbps 5Mbps
8PSK
5Mbps
Rain margin

24. 8PSK8PSK 8PSK
5Mbps 5Mbps 5Mbps
8PSK
5Mbps
Rain margin

26. 5Mbps
16
APSK
16APSK
threshold
16
APSK
16
APSK
16
APSK
5Mbps 5Mbps 5Mbps
8PSK
Space segment for 8PSK operation
No more rain margin

27. 5Mbps
16
APSK
8
PSK
16
APSK
16
APSK
5Mbps 5Mbps 5Mbps
16
APSK
Space segment for 8PSK operation
No more rain margin

28. 5Mbps
16
APSK
8
PSK
16
APSK
16
APSK
5Mbps 5Mbps 5Mbps4Mbps
Space segment for 8PSK operation
No more rain margin

29. 5Mbps
16
APSK
8
PSK
16
APSK
16
APSK
5Mbps 5Mbps 5Mbps4Mbps3Mbps
Space segment for 8PSK operation
No more rain margin

30. 5Mbps
16
APSK
8
PSK
16
APSK
16
APSK
5Mbps 5Mbps 5Mbps4Mbps
Space segment for 8PSK operation
No more rain margin

31. 5Mbps
16
APSK
8
PSK
16
APSK
16
APSK
5Mbps 5Mbps 5Mbps
16
APSK
Space segment for 8PSK operation
No more rain margin

34. Very High rates 300+Mbps
• High Efficiency
• NO sharing/overbooking
Medium rates
• Low efficiency (TDMA overhead)
• Enables very high
sharing/overbooking
High rates 20-60+Mbps
• High Efficiency
• Enables sharing/overbooking
When to use?
• Very high rate links
(e.g. High speed Trunking)
• Interop DVB-S2 (e.g. Broadcast receivers)
When to use?
• Very bursty traffic
(e.g. Consumer and SME broadband)
• Very low data rate, transactional
(e.g. ATM, SCADA)
When to use?
• Medium – high bitrate services
• Low to medium overbooking
e.g. SNG, Maritime, Cellular Backhaul,
Government, Enterprise

35. 5Mbps
16
APSK
16
APSK
16
APSK
5Mbps 5Mbps 5Mbps
8
PSK
16
APSK
1 Rain Margin

36. 5Mbps
16
APSK
16
APSK
16
APSK
5Mbps 5Mbps 5Mbps
8
PSK
1 Rain Margin

37. 5Mbps
16
APSK
16
APSK
16
APSK
5Mbps 5Mbps 5Mbps
8
PSK
1 Rain Margin

38. 5Mbps
16
APSK
16
APSK
16
APSK
5Mbps 5Mbps 5Mbps
8
PSK
1 Rain Margin

39. 5Mbps
16
APSK
16
APSK
16
APSK
5Mbps 5Mbps 5Mbps
8
PSK
16
APSK
1 Rain Margin