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Simple Low-Density Parity Check (LDPC) Staircase Forward Error Correction (FEC) Scheme for FECFRAME (RFC6816) Disclosure Number: IPCOM000224474D
Original Publication Date: 2012-Dec-01
Included in the Prior Art Database: 2012-Dec-22
Document File: 48 page(s) / 50K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

V. Roca: AUTHOR [+3]


The use of Forward Error Correction (FEC) codes is a classic solution to improve the reliability of unicast, multicast, and broadcast Content Delivery Protocols (CDPs) and applications [RFC3453]. "Forward Error Correction (FEC) Framework" [RFC6363] describes a generic framework to use FEC schemes with media delivery applications and, for instance, with real-time streaming media applications based on the RTP real-time protocol. Similarly, "Forward Error Correction (FEC) Building Block" [RFC5052] describes a generic framework to use FEC schemes with objects (e.g., files) delivery applications based on either the Asynchronous Layered Coding (ALC) [RFC5775] or the NACK- Oriented Reliable Multicast (NORM) [RFC5740] protocols.

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Internet Engineering Task Force (IETF)                           V. Roca Request for Comments: 6816                                         INRIA Category: Standards Track                                      M. Cunche ISSN: 2070-1721                                          INSA-Lyon/INRIA                                                                 J. Lacan                                                  ISAE, Univ. of Toulouse                                                            December 2012

             Simple Low-Density Parity Check (LDPC) Staircase            Forward Error Correction (FEC) Scheme for FECFRAME


   This document describes a fully specified simple Forward Error    Correction (FEC) scheme for Low-Density Parity Check (LDPC) Staircase    codes that can be used to protect media streams along the lines    defined by FECFRAME.  These codes have many interesting properties:    they are systematic codes, they perform close to ideal codes in many    use-cases, and they also feature very high encoding and decoding    throughputs.  LDPC-Staircase codes are therefore a good solution to    protect a single high bitrate source flow or to protect globally    several mid-rate flows within a single FECFRAME instance.  They are    also a good solution whenever the processing load of a software    encoder or decoder must be kept to a minimum.

Status of This Memo

   This is an Internet Standards Track document.

   This document is a product of the Internet Engineering Task Force    (IETF).  It represents the consensus of the IETF community.  It has    received public review and has been approved for publication by the    Internet Engineering Steering Group (IESG).  Further information on    Internet Standards is available in Section 2 of RFC 5741.

   Information about the current status of this document, any errata,    and how to provide feedback on it may be obtained at

 Roca, et al.                 Standards Track                    [Page 1]
 RFC 6816            Simple LDPC-Staircase FEC Scheme       December 2012

 Copyright Notice

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   This document is subject to BCP 78 and the IETF Trust's Legal    Provisions Relating to IETF Documents    ( in effect on the date of    publication of this document.  Please review these documents    carefully, as they describe your ri...