公开(公告)号：US20170257116A1

公开(公告)日：2017-09-07

申请号：US15598349

申请日：2017-05-18

Applicant: Entropic Communications, LLC

Inventor： Shaw Yuan ,  Zong Liang Wu ,  David Barr ,  Shachar Kons

IPC: H03M13/00 ,  H03M13/03 ,  H03M13/11 ,  G06F7/544

CPC classification number: H03M13/1102 ,  H03M13/036 ,  H03M13/116 ,  H03M13/1177 ,  H03M13/616

Abstract: An LDPC parity check matrix includes a systematic portion having a plurality of systematic elements and a parity portion having a plurality of parity elements. The value of each systematic element determines a cyclic shift to be applied to rows of an identity submatrix corresponding to that element. The value of each parity element determines a cyclic shift to be applied to rows of an identity submatrix corresponding to that element. The weights of two or more columns of the parity portion are the same.