WO2007134196A3 - Code generator and decoder using hybrid codes - Google Patents

Code generator and decoder using hybrid codes Download PDF

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Publication number
WO2007134196A3
WO2007134196A3 PCT/US2007/068713 US2007068713W WO2007134196A3 WO 2007134196 A3 WO2007134196 A3 WO 2007134196A3 US 2007068713 W US2007068713 W US 2007068713W WO 2007134196 A3 WO2007134196 A3 WO 2007134196A3
Authority
WO
WIPO (PCT)
Prior art keywords
fec code
data
encoded
groups
decoder
Prior art date
Application number
PCT/US2007/068713
Other languages
French (fr)
Other versions
WO2007134196A2 (en
Inventor
Mark Watson
Michael G Luby
Original Assignee
Digital Fountain Inc
Mark Watson
Michael G Luby
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Digital Fountain Inc, Mark Watson, Michael G Luby filed Critical Digital Fountain Inc
Publication of WO2007134196A2 publication Critical patent/WO2007134196A2/en
Publication of WO2007134196A3 publication Critical patent/WO2007134196A3/en

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Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
    • H03M13/03—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0045—Arrangements at the receiver end
    • H04L1/0052—Realisations of complexity reduction techniques, e.g. pipelining or use of look-up tables
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0064—Concatenated codes

Abstract

A method of encoding data for transmissions from a source to a destination over a communications channel is provided. The method operates on an ordered set of source symbols and may generate zero or more redundant symbols from the source symbols, wherein data is encoded in a first step according to a simple FEC code and in a second step, data is encoded according to a second FEC code, more complex than the first FEC code. The first FEC code and/or the second FEC code might comprise coding known in the art. These steps result in two groups of encoded data in such a way that a low complexity receiver may make use of one of the groups of encoded data while higher complexity receivers may make use of both groups of encoded data.
PCT/US2007/068713 2006-05-10 2007-05-10 Code generator and decoder using hybrid codes WO2007134196A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US79953606P 2006-05-10 2006-05-10
US60/799,536 2006-05-10

Publications (2)

Publication Number Publication Date
WO2007134196A2 WO2007134196A2 (en) 2007-11-22
WO2007134196A3 true WO2007134196A3 (en) 2008-03-06

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2007/068713 WO2007134196A2 (en) 2006-05-10 2007-05-10 Code generator and decoder using hybrid codes

Country Status (2)

Country Link
US (2) US7971129B2 (en)
WO (1) WO2007134196A2 (en)

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