Modul 1Introduction to HX System

4Hub Configuration – VSAT IP

5Hub Configuration – VSAT IP

C-Band vs Ku-Band

6Hub Configuration – VSAT IP

Satellite Drift

Satellite Frequency Plan

7Hub Configuration – VSAT IP

8Hub Configuration – VSAT IP

9Hub Configuration – VSAT IP

10Hub Configuration – VSAT IP

11Hub Configuration – VSAT IP

12Hub Configuration – VSAT IP

13Hub Configuration – VSAT IP

14Hub Configuration – VSAT IPHub Configuration – VSAT IP

15Hub Configuration – VSAT IP

16Hub Configuration – VSAT IP

DVB-S versus DVB-S2

DVB-S

• Multiple streams: No• Input bit rate: fixed• Coding: Reed Solomon plus convolution

encoding• Coding rates: ½, 2/3, ¾, 7/8• Input I/F: MPEG TS• Symbols mapping: Gray• Modulation format: QPSK• Pilot symbols: None• Symbols shaping: Square-Root• Raised Cosine filter =0.35• Transmission mode: constant• Coding and Modulation

DVB-S2

Multiple streams: Yes Input bit rate: variable frame-by-

frame Coding: BCH + Low-Density Parity

Check Codes (LDPC) Coding rates: ¼, 1/3, 2/5, ½, 3/5,

2/3, ¾, 4/5, 5/6, 8/9, 9/10 Symbols mapping: BICM (Gray) Modulation format: QPSK, 8PSK,

16APSK, 32APSK Pilot symbols: Optional Symbols shaping: Square-Root

Raised Cosine filter =0.2, 0.25, 0.35

Input I/F: MPEG-TS, IP Transmission modes: Constant

Coding and Modulation, Variable Coding and Modulation, Adaptive Coding and Modulation