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Framing Efficiency Optimization for DVB-S2 Systems with QoS Guarantees

Toegl, Ronald and Parraga Niebla, Cristina and Birnbacher, Ulla (2006) Framing Efficiency Optimization for DVB-S2 Systems with QoS Guarantees. In: Ka-band Conference 2006. Ka and Broadband Communications Conference, 2006-09-27 - 2006-09-29, Naples, Italy.

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Official URL: http://www.kaconf.org/

Abstract

This paper deals with the design, evaluation and performance comparison of smart framing strategies that complement the packet scheduler in DVB-S2 systems with Adaptive Coding and Modulation, when QoS guarantees are to be provided. User data packets are transmitted grouped in frames according to a scheduling algorithm. Each of these frames uses a selected modulation and coding setting (ModCod), the most efficient pair that provides sufficient robustness given the channel state experienced by the satellite terminals that will receive the data. This is promising for the achievement of highly efficient resource utilization; however, the inherent spectral efficiency of the selected ModCod can be cancelled by a poor framing efficiency, i.e. transmitting frames with large padding component. In this paper, an extension of the Group-efficient Scheduler [3] is proposed to support QoS guarantees. In addition, smart framing strategies are proposed, which optimize the total transmission efficiency by different flavors of trade-off between spectral efficiency and framing efficiency. Finally, the performances of the QoS extension of the Group-efficient Scheduler complemented by the aforementioned smart framing strategies are compared in terms of different QoS metrics.

Document Type:Conference or Workshop Item (Paper)
Title:Framing Efficiency Optimization for DVB-S2 Systems with QoS Guarantees
Authors:
AuthorsInstitution or Email of Authors
Toegl, RonaldUNSPECIFIED
Parraga Niebla, CristinaUNSPECIFIED
Birnbacher, UllaTechnische Universitaet Graz
Date:15 July 2006
Journal or Publication Title:Ka-band Conference 2006
Refereed publication:Yes
In ISI Web of Science:No
Status:Published
Keywords:framing, efficiency, QoS, DVB-S2, satellite communications.
Event Title:Ka and Broadband Communications Conference
Event Location:Naples, Italy
Event Type:international Conference
Event Dates:2006-09-27 - 2006-09-29
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W KN - Kommunikation/Navigation
DLR - Research area:Space
DLR - Program:W - no assignement
DLR - Research theme (Project):W -- no assignement (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Communication and Navigation > Digital Networks
Deposited By: Cristina Parraga Niebla
Deposited On:05 Oct 2006
Last Modified:14 Jan 2010 23:29

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