ACM SIGMOBILE Mobile Computing and Communications Review
Burst erasure correction codes with low decoding delay
IEEE Transactions on Information Theory
Why Do Block Length and Delay Behave Differently if Feedback Is Present?
IEEE Transactions on Information Theory
IEEE Transactions on Circuits and Systems for Video Technology
Traffic sources measurement and analysis in UMTS
Proceedings of the 1st ACM workshop on High performance mobile opportunistic systems
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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 significantly 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.