公开(公告)号：US11309917B2

公开(公告)日：2022-04-19

申请号：US16901934

申请日：2020-06-15

Applicant: Huawei Technologies Co., Ltd.

Inventor： Balazs Matuz ,  Gianluigi Liva ,  Onurcan Iscan ,  Ronald Boehnke ,  Wen Xu

IPC: G06F11/00 ,  H03M13/11 ,  H03M13/00

Abstract: Protograph-based LDPC codes are obtained from z-row-orthogonal base matrices with some additional structure constraints, such as a diagonal and/or double-diagonal structure, in order to allow a high parallelization that is a multiple of z, while having an efficient encoding or decoding. A “big” base matrix is constructed from a structured square submatrix in order to have a WiMAX-like structure and a z-row-orthogonality. Also, starting from a “smaller” base matrix having a part arranged in a double-diagonal shape with tail-biting one, an expansion by a factor equal to z can be performed, followed by an addition of a single one-entry into the last column at a specific location, thereby obtaining a three-degree column, and followed by a row and/or column permutation in order to obtain a base matrix in a WiMAX-like structure.