公开(公告)号：US20180323801A1

公开(公告)日：2018-11-08

申请号：US15971350

申请日：2018-05-04

Applicant: Mediatek Inc.

Inventor： Cheng-Yi HSU ,  Chong-You LEE ,  Wei Jen CHEN ,  Maoching CHIU ,  Timothy Perrin FISHER-JEFFES ,  Ju-Ya CHEN ,  Yen Shuo CHANG

IPC: H03M13/11 ,  H04L1/00

CPC classification number: H03M13/1162 ,  H04L1/0057 ,  H04L1/0071

Abstract: An apparatus determines a code block size (CBS) of information bits contained in a codeword of low-density parity check (LDPC) coding. The apparatus compares the CBS with at least one threshold, determines, based on a result of the comparison, a Kb number and determines a Kp number based on a code rate and the Kb number. The apparatus generates a parity check matrix. An information portion of the parity check matrix is a first matrix formed by M number of second square matrices. M is equal to Kp multiplied by Kb. A total number of columns in the Kb number of second square matrices is equal to a total number of bits of the CBS. One or more matrices of the M number of second square matrices are circular permutation matrices. The apparatus operates an LDPC encoder or an LDPC decoder based on the parity check matrix.