VoIP over a DVB-S2 ACM link

Author

Jegham, Nizar ; Girault, Nicolas ; Guern, Cédric Le ; Roussel, Gilles ; Lohier, Stéphane ; Beylot, AndréLuc

Author_Institution

EADS Astrium, Toulouse

fYear

2008

fDate

1-3 Oct. 2008

Firstpage

138

Lastpage

142

Abstract

DVB-S was initially targeting unidirectional services such as broadband TV broadcasting. DVB-S2, the newest evolution of the standard is rather packet delivery oriented. Together with an RCS return channel, it constitutes an improved network to convey IP based traffic. This paper addresses the issues relating to transporting voice over IP via a DVB-S2 link. Tests were performed on a real DVB-S2/RCS test bench part of the DVB-S2 experiment infrastructure. The standard flexibility, in comparison to DVB-S, to encapsulate different lengths of IP packets allowed acceptable performances. Through an efficient sizing of IP packets within a mixed traffic (voice and data) it is possible to improve encapsulation efficiency. In addition, a focus on the voice behaviour during fading event in an adaptive coding and modulation mode, showed acceptable quality.

Keywords

Internet telephony; adaptive codes; digital video broadcasting; DVB-S2 ACM link; VoIP; adaptive coding; broadband TV broadcasting; fading event; modulation mode; packet delivery; transporting voice; unidirectional services; Adaptive coding; Digital video broadcasting; Encapsulation; Fading; Internet telephony; Modulation coding; Performance evaluation; TV broadcasting; Telecommunication traffic; Testing; Adaptive coding and modulation.(ACM); DVB-S2; Encapsulation; Voice over IP;

fLanguage

English

Publisher

ieee

Conference_Titel

Satellite and Space Communications, 2008. IWSSC 2008. IEEE International Workshop on

Conference_Location

Toulouse

Print_ISBN

978-1-4244-1947-0

Electronic_ISBN

978-1-4244-1948-7

Type

conf

DOI

10.1109/IWSSC.2008.4656768

Filename

4656768