公开(公告)号：US20240030939A1

公开(公告)日：2024-01-25

申请号：US18220464

申请日：2023-07-11

Applicant: Silicon Motion, Inc.

Inventor： Duen-Yih TENG

IPC: H03M13/11

CPC classification number: H03M13/1108 ,  H03M13/1174

Abstract: The invention relates to a method, a non-transitory computer-readable storage medium and an apparatus for decoding a Low-Density Parity-Check (LDPC) code. The method, which is performed by a processing unit in an LDPC decoder, includes the following steps: determining whether a bit flipping algorithm when decoding a codeword enters a trapping state after an observation period during which a sequential selection strategy is used; and modifying a scheduling strategy to a non-sequential selection strategy and performing the bit flipping algorithm on the codeword under the non-sequential selection strategy when the bit flipping algorithm enters the trapping state. The codeword is divided into chunks in fixed-length and the sequential selection strategy indicates sequentially selecting the chunks in the codeword, so that the bit flipping algorithm is performed on one selected chunk only each time. The non-sequential selection strategy indicates an arbitrary selection combination of the chunks in the codeword, which is different from that under the sequential selection strategy.