Adaptable Forward Error Correction for Multimedia Data Streams

Lamparter, Bernd ; Böhrer, Otto ; Effelsberg, Wolfgang ; Turau, Volker

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URN: urn:nbn:de:bsz:180-madoc-8420
Document Type: Working paper
Year of publication: 1993
The title of a journal, publication series: Technical Reports
Volume: 93-009
Place of publication: Mannheim
Publication language: English
Institution: School of Business Informatics and Mathematics > Sonstige - Fakultät für Wirtschaftsinformatik und Wirtschaftsmathematik
MADOC publication series: Veröffentlichungen der Fakultät für Mathematik und Informatik > Institut für Informatik > Technical Reports
Subject: 004 Computer science, internet
Subject headings (SWD): Transportprotokoll , Wiederherstellung <Informatik> , Multimedia
Abstract: The error handling method in traditional communication protocols is error detection and retransmission. This method is inappropriate for distributed multimedia systems for two reasons: It introduces variable delay unacceptable for isochronous streams, and it is very inefficient and difficult to use in the multicast environment typical for many multimedia applications. We propose AdFEC, an adaptable Forward Error Correction scheme based on binary polynomial algebra. It produces an adaptable amount of redundancy allowing different packet types to be protected according to their importance. The scheme was implemented in the framework of the XMovie project and proved to be very efficient.

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