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1. WO2020107218 - METHOD FOR POLAR DECODING WITH DYNAMIC SUCCESSIVE CANCELLATION LIST SIZE AND POLAR DECODER

Publication Number WO/2020/107218
Publication Date 04.06.2020
International Application No. PCT/CN2018/117716
International Filing Date 27.11.2018
IPC
H03M 13/09 2006.01
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
09Error detection only, e.g. using cyclic redundancy check codes or single parity bit
CPC
H03M 13/09
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
09Error detection only, e.g. using cyclic redundancy check [CRC] codes or single parity bit
Applicants
  • TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) [SE]/[SE]
  • FENG, Ang [CN]/[CN]
Inventors
  • FENG, Ang
  • XIE, Ailing
  • ZHANG, Yushi
Agents
  • CHINA SCIENCE PATENT & TRADEMARK AGENT LTD.
Priority Data
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) METHOD FOR POLAR DECODING WITH DYNAMIC SUCCESSIVE CANCELLATION LIST SIZE AND POLAR DECODER
(FR) PROCÉDÉ DE DÉCODAGE POLAIRE AVEC TAILLE DE LISTE D'ANNULATIONS SUCCESSIVES DYNAMIQUE ET DÉCODEUR POLAIRE
Abstract
(EN)
It provides a method (300) for polar decoding a received signal into a number, N, of bits with Successive Cancellation List, SCL. The method (300) includes: at the i-th level of a binary tree for decoding the i-th bit of the N bits, where 1≤i≤N: when the i-th bit is an information bit, calculating (310) a path metric for each of 2*L i-1 candidate paths at the i-th level, where L i-1 is an SCL size at the (i-1)–th level and L 0=1; setting (320) an SCL size at the i-th level, L i, based on L i-1 and a statistical distribution of the path metrics calculated for the 2*L i-1 candidate paths; and selecting (330) L i surviving paths from the 2*L i-1 candidate paths based on their respective path metrics.
(FR)
La présente invention concerne un procédé (300) de décodage polaire d'un signal reçu en un nombre, N, de bits avec une liste d'annulations successives, SCL. Le procédé (300) comprend les étapes consistant à : au niveau du ième niveau d'un arbre binaire pour décoder l'ième bit des N bits, où 1≤i≤N : lorsque l'ième bit est un bit d'information, calculer (310) une mesure de trajet pour chacun des 2*L i-1 trajets candidats au ième niveau, où L i-1 est une taille de SCL au (i-1)ième niveau et L 0=1 ; régler (320) une taille de SCL au ième niveau, L i, sur la base de L i-1 et d'une distribution statistique des mesures de trajet calculées pour les 2*L i-1 trajets candidats ; et sélectionner (330) L i trajets survivants parmi les 2*L i-1 trajets candidats sur la base de leurs mesures de trajet respectives.
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