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DVB-S and DVB-S2 Standards Overview

Digital Satellite TV Broadcasting (DVB-S) describes the modulation and channel coding system for satellite TV and HDTV. There are two generations of the DVB-S standard: DVB-S from 1993-1997 and DVB-S2 from 2003. DVB-S2 provides support for multiple transport streams, variable coding and modulation, and larger data rates for HDTV and internet access compared to DVB-S. The US satellite TV market is estimated at $40 billion with over 9 million users in 2006. Security is a concern to prevent modifying receivers to bypass encryption.

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301 views9 pages

DVB-S and DVB-S2 Standards Overview

Digital Satellite TV Broadcasting (DVB-S) describes the modulation and channel coding system for satellite TV and HDTV. There are two generations of the DVB-S standard: DVB-S from 1993-1997 and DVB-S2 from 2003. DVB-S2 provides support for multiple transport streams, variable coding and modulation, and larger data rates for HDTV and internet access compared to DVB-S. The US satellite TV market is estimated at $40 billion with over 9 million users in 2006. Security is a concern to prevent modifying receivers to bypass encryption.

Uploaded by

simohamed1993
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Digital Satellite TV

Broadcasting (DVB-S)
By: Sean Miller
ELEX 7860
DVB-S
What is it? The Final Frontier
It describes the modulation
and channel coding system
for satellite TV, HDTV for
primary. And for secondary
the FSS and BSS band.
It is intended for DTH
services who use a
Integrated Receiver
Decoder.
The Standard
There are two Generations of the DVB-S standard. Standards are
done by ETSI and particular in this case the Digital Video Broadcast
Project.
DVB-S:
Was developed from 1993-1997.
Defined by European Standard EN 300 421.
Just describes the physical link characteristics and the framing. The overload
transport stream delivery falls under MPEG-2.
DVB-S2:
Was developed in 2003.
Defined by European Standard EN 302 307
The standard was ratified in March 2005.
Mainly designed to accommodate larger data rates to provide HDVT, Internet
access, and data distribution.
Comparison Table of the two
Standards
DVB-S DVB-S2
Multiple Transport Stream
Input Interface Single Transport Stream (TS) and Generic Stream
Encapsulation (GSE)
Variable Coding &
Constant Coding &
Modes Modulation and Adaptive
Modulation
Coding & Modulation
LDPC + BCH 1/4, 1/3, 2/5,
Reed Solomon (RS) 1/2, 2/3,
FEC 1/2, 3/5, 2/3, 3/4, 4/5, 5/6,
3/4, 5/6, 7/8
8/9, 9/10
Single Carrier QPSK with
Modulation Single Carrier QPSK
Multiple Streams
Modulation Schemes QPSK, 8PSK, 16QAM QPSK, 8PSK, 16APSK, 32APSK
Interleaving Bit-Interleaving Bit-Interleaving
Pilots Not Applicable Pilot symbols
Standard Specifics
DVB-S DVB-S2
Uses the MPEG-2 video Uses the MPEG-4 AVC
standard video standard.

For Satellite TV:


C-band (4-8GHz), 24 channels
Ku band(12-18GHz), 32 channels
Bandwidth is about 27-50MHz
Market Estimates
US market is estimated at $40 billion
according to IBIS world report.
In 2006 it is an estimated 9,396,000 users. At
roughly $40 a month plus initial cost of $80
dish and $200 receiver.
This adds up to about $375 million /month.
Security of DVB-S
There is a security problem of people
modifying the DTH receiver to allow bypass of
the scramble system to get subscriptions.
Uses the ETSI TS 143 020 standard.
Main concern is to keep the same security
standard that is used in terrestrial standards.
Example Link Budget
References
http://books.google.ca/books?id=T2eD0-
pP_0UC&pg=PA669&lpg=PA669&dq=link+budget+of+a+satellite+system+example&source=bl&ots=1QZMI
BS1z5&sig=FpZnkwjTR5grWzJGIjEST6IxvzE&hl=en&sa=X&ei=2MmTUYK-
C6WqigL5pYCgBA&ved=0CC0Q6AEwAA#v=onepage&q&f=false

http://en.wikipedia.org/wiki/DVB-S
http://en.wikipedia.org/wiki/DVB-S2

http://www.etsi.org/technologies-clusters/technologies/satellite/dvb-s
The DVB-S Standard: ets_300421e01p.pdf
The DVB-S2 Standard: en_302307v010301p.pdf

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