DocumentCode :
1117289
Title :
Adaptive Coding and Modulation for the DVB-S2 Standard Interactive Applications: Capacity Assessment and Key System Issues
Author :
Alberty, Eric ; Defever, Sophie ; Moreau, Cyrille ; De Gaudenzi, Riccardo ; Ginesi, Alberto ; Rinaldo, Rita ; Gallinaro, Gennaro ; Vernucci, A.
Author_Institution :
EADS Astrium
Volume :
14
Issue :
4
fYear :
2007
fDate :
8/1/2007 12:00:00 AM
Firstpage :
61
Lastpage :
69
Abstract :
Point-to-point multibeam satellite systems based on the DVB-S standard are currently designed for link closure in the worst-case propagation and location conditions. The DVB-S standard, conceived for broadcasting applications, considers a fixed coding rate and modulation format that are selected according to the assumed coverage and availability requirements. This approach implies the occurrence of high margins in the majority of the cases, when interference and propagation conditions allow for higher signal-to-noise-plus-interference ratio. The adaptive coding and modulation (ACM) introduction in the new DVB-S2 standard for the interactive service profile opens up a number of appealing opportunities for the design and development of satellite broadband networks. In this article we show how the ACM introduction in the satellite downlink enables greatly enhanced system performance but also has a profound impact on the way the system and some of the key system components are designed.
Keywords :
adaptive codes; adaptive modulation; broadband networks; digital video broadcasting; direct broadcasting by satellite; telecommunication standards; video coding; DVB-S2 standard interactive application; adaptive coding and modulation; broadcasting application; capacity assessment; key system; point-to-point multibeam satellite systems; satellite broadband network; satellite downlink; signal-to-noise-plus-interference ratio; system performance; Adaptive coding; Attenuation; Bit rate; Digital video broadcasting; Downlink; Interference; Modulation coding; Physical layer; Satellite antennas; Satellite broadcasting;
fLanguage :
English
Journal_Title :
Wireless Communications, IEEE
Publisher :
ieee
ISSN :
1536-1284
Type :
jour
DOI :
10.1109/MWC.2007.4300985
Filename :
4300985
Link To Document :
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