A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the FEC Framework Working Group of the IETF.
Title : Raptor FEC Schemes for FECFRAME
Author(s) : M. Watson
Filename : draft-ietf-fecframe-raptor-01.txt
Pages : 18
Date : 2009-07-08
This document describes Fully-Specified Forward Error Correction
(FEC) Schemes for the Raptor code and its application to reliable
delivery of media streams in the context of FEC Framework. The
Raptor code is a systematic code, where a number of repair symbols
are generated from a set of source symbols and sent in one or more
repair flows in addition to the source symbols that are sent to the
receiver(s) within a source flow. The Raptor code offers a close to
optimal protection against arbitrary packet losses at a low
computational complexity. Two FEC Schemes are defined, one for
protection of arbitrary packet flows and another for protection of a
single flow that already contains a sequence number. Repair data may
be sent over arbitrary datagram transport (e.g. UDP) or using RTP.
An RTP Payload Type is defined for this latter case.
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