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1. (WO2018204505) GENERATION OF A SET OF LIFTED QUASI-CYCLIC LDPC CODES

Pub. No.:    WO/2018/204505    International Application No.:    PCT/US2018/030668
Publication Date: Fri Nov 09 00:59:59 CET 2018 International Filing Date: Thu May 03 01:59:59 CEST 2018
IPC: H03M 13/11
H03M 13/03
Applicants: HUAWEI TECHNOLOGIES CO., LTD.
FUTUREWEI TECHNOLOGIES, INC.
Inventors: KALACHEV, Gleb Vyacheslavovich
MAZURENKO, Ivan Leonidovich
PANTELEEV, Pavel Anatolyevich
GASANOV, Elyar Eldarovich
LETUNOVSKIY, Aleksey Alexandrovich
TONG, Wen
COZZO, Carmela
Title: GENERATION OF A SET OF LIFTED QUASI-CYCLIC LDPC CODES
Abstract:
A method for generating a code, a method for encoding and decoding data, and an encoder and a decoder performing the encoding and decoding are disclosed. In an embodiment, a method for lifting a child code from a base code for encoding and decoding data includes determining a single combination of a circulant size, a lifting function, and a labelled base matrix PCM according to an information length and a code rate using data stored in a lifting table. The lifting table was defined at a code generation stage. The method also includes calculating a plurality of shifts for the child code. Each shift is calculated by applying the lifting function to the labelled base matrix PCM with a defined index using the circulant size and using the derived child PCM to encode or decode data.