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On-the-Fly Coding for Real-Time Applications

Tournoux, Pierre-Ugo and Bouabdallah, Amine and Lacan, Jérôme and Lochin, Emmanuel On-the-Fly Coding for Real-Time Applications. (2009) In: Association for Computing Machinery (ACM) Multimedia 2009 System Track, 19-23 Oct 2009, Beijing, China .

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Official URL: http://doi.acm.org/10.1145/1631272.1631440

Abstract

Although ironically it does not offer any real-time guarantee, Internet is a popular solution to support multimedia time-constrained applications (e.g. VoIP, Video Conferencing, ...). Following this trend, this paper focuses on the performance of these applications by studying the benefit of using a novel reliability concept which aims at signifi- cantly improving the performance of these time constrained applications over lossy best-effort networks. This reliability mechanism emerged from several recent works from both network and coding theories. Its principle is to integrate feedbacks in an on-the fly coding scheme in order to optimize the trade-off ”packet decoding delay” vs ”throughput”. We present the first evaluations of this mechanism for VoIP and video-conferencing applications for various erasure channels. Compared to classic block-based erasure codes, the results show significant gains in terms of quality observed by the user for both applications.

Item Type:Conference or Workshop Item (Paper)
Additional Information:Thanks to Association for Computing Machinery(ACM). The original PDF can be found on the ACM website: http://doi.acm.org/10.1145/1631272.1631440
Audience (conference):International conference proceedings
Uncontrolled Keywords:
Institution: Université de Toulouse > Institut Supérieur de l'Aéronautique et de l'Espace - ISAE
French research institutions > Centre National de la Recherche Scientifique - CNRS
Laboratory name:
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Deposited By: Emmanuel Lochin

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