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1. WO2022255913 - METHOD AND ARRANGEMENTS FOR SUPPORTING FORWARD ERROR CORRECTION DECODING OF A WORD

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Publication Number WO/2022/255913
Publication Date 08.12.2022
International Application No. PCT/SE2021/050516
International Filing Date 02.06.2021
IPC
H03M 13/13 2006.1
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
MCODING, DECODING OR CODE CONVERSION, IN GENERAL
13Coding, 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
03Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words
05using block codes, i.e. a predetermined number of check bits joined to a predetermined number of information bits
13Linear codes
H03M 13/45 2006.1
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
MCODING, DECODING OR CODE CONVERSION, IN GENERAL
13Coding, 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
37Decoding methods or techniques, not specific to the particular type of coding provided for in groups H03M13/03-H03M13/35153
45Soft decoding, i.e. using symbol reliability information
H04B 1/10 2006.1
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
1Details of transmission systems, not covered by a single one of groups H04B3/-H04B13/123; Details of transmission systems not characterised by the medium used for transmission
06Receivers
10Means associated with receiver for limiting or suppressing noise or interference
H04L 1/00 2006.1
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
1Arrangements for detecting or preventing errors in the information received
CPC
H03M 13/1108
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
MCODING; DECODING; CODE CONVERSION IN GENERAL
13Coding, 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
03Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words
05using block codes, i.e. a predetermined number of check bits joined to a predetermined number of information bits
11using multiple parity bits
1102Codes on graphs and decoding on graphs, e.g. low-density parity check [LDPC] codes
1105Decoding
1108Hard decision decoding, e.g. bit flipping, modified or weighted bit flipping
H03M 13/19
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
MCODING; DECODING; CODE CONVERSION IN GENERAL
13Coding, 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
03Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words
05using block codes, i.e. a predetermined number of check bits joined to a predetermined number of information bits
13Linear codes
19Single error correction without using particular properties of the cyclic codes, e.g. Hamming codes, extended or generalised Hamming codes
H03M 13/451
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
MCODING; DECODING; CODE CONVERSION IN GENERAL
13Coding, 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
37Decoding methods or techniques, not specific to the particular type of coding provided for in groups H03M13/03 - H03M13/35
45Soft decoding, i.e. using symbol reliability information
451using a set of candidate code words, e.g. ordered statistics decoding [OSD]
H04B 1/10
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
1Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
06Receivers
10Means associated with receiver for limiting or suppressing noise or interference
H04L 1/00
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
1Arrangements for detecting or preventing errors in the information received
Applicants
  • TELEFONAKTIEBOLAGET LM ERICSSON (publ) [SE]/[SE]
Inventors
  • TULLBERG, Hugo
  • FERRANTE, Guido Carlo
Agents
  • BOU FAICAL, Roger
Priority Data
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) METHOD AND ARRANGEMENTS FOR SUPPORTING FORWARD ERROR CORRECTION DECODING OF A WORD
(FR) PROCÉDÉ ET AGENCEMENTS PERMETTANT LA PRISE EN CHARGE D'UN DÉCODAGE DE CORRECTION D'ERREUR SANS VOIE DE RETOUR D'UN MOT
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Abstract
(EN) Method and one or more apparatuses (410; 440; 441; 600) for supporting forward error correction decoding of a word received over a noisy channel (430). The word being a codeword according to a linear block code prior to transmission. The syndrome is computed (503) for the received word using an obtained parity check matrix. It is generated (504) one or more noise sequences to affect bits of the received word that are in one or more bit positions identified through parity check equations of the obtained parity check matrix identified as erroneous parity check equations by the computed syndrome. Candidate codewords are formed (505) for said noise sequences, respectively, each candidate codeword corresponding to the received word with removal of noise according to a respective one of said noise sequences. It is determined (506) if any one of said formed candidate codewords is an actual codeword according to said LBC by computing the syndrome for the candidate codeword using the obtained parity check matrix.
(FR) Procédé et un ou plusieurs appareil(s) (410; 440; 441; 600) permettant la prise en charge d'un décodage de correction d'erreur sans voie de retour d'un mot reçu sur un canal bruyant (430). Le mot est un mot de code selon un code de bloc linéaire avant une transmission. Le syndrome est calculé (503) pour le mot reçu au moyen d'une matrice de contrôle de parité obtenue. Une ou plusieurs séquences de bruit sont générées (504) pour affecter des bits du mot reçu qui sont dans une ou plusieurs positions de bits identifiées par le biais d'équations de contrôle de parité de la matrice de contrôle de parité obtenue identifiées en tant qu'équations de contrôle de parité erronées par le syndrome calculé. Des mots de code candidats sont formés (505) pour lesdites séquences de bruit, respectivement, chaque mot de code candidat correspondant au mot reçu avec une élimination de bruit selon l'une desdites séquences de bruit respectives. Il est déterminé (506) si l'un quelconque desdits mots de code candidats formés est un mot de code réel selon ledit LBC par calcul du syndrome pour le mot de code candidat au moyen de la matrice de contrôle de parité obtenue.
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