sts 2012/13 exercise 8 dvb-s – transport stream
TRANSCRIPT
STS 2012/13
exercise 8DVB-S – transport stream
MPEG-2 layers(genesis of transport stream)
MPEG-2 encoding
Packetizing
Multiplexersource audio
Source video
Uncompressed stream
Data
MPEG-stream
ES-elementary stream
TS-Transport streamMPEG-2
PES (Packetized Elementary Stream)
MPEG-2 encoding
Packetizing
Packetizing
4
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Digital Television Encode LayersDigital Television Encode Layers
Program 1 Multiplexer
Bouquet Multiplexer
Modulator & Transmitter
PictureCoding
AudioCoding
DataCoding
Program 2 Program 3
MPEG TransportStream Mux
ServiceMux
MPEG-2or AC-3MPEG-2
Error Protection
Delivery System
Other Data
Control Data
ControlData
Control Data
Control Data
Video Data Sound
188 byte packetsMPEG Transport Data Stream
[fig.- source: Hewlett Packard: MPEG-2.The Basis of How It Works].
Methods of MPEG-video encoding
Architecture of DVB-S transmitter
FEC Frame
BB Frame
mapping/modulations:
8-PSK16-APSK
32-APSK
Principle of digital modulation
QPSK
software – TS Analyzer