The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 07, 2014
Filed:
Nov. 29, 2011
Shadi Abu-surra, Richardson, TX (US);
Thomas M. Henige, Plano, TX (US);
Eran Pisek, Plano, TX (US);
Zhouyue Pi, Allen, TX (US);
Shadi Abu-Surra, Richardson, TX (US);
Thomas M. Henige, Plano, TX (US);
Eran Pisek, Plano, TX (US);
Zhouyue Pi, Allen, TX (US);
Samsung Electronics Co., Ltd., Suwon-si, KR;
Abstract
A method constructs a family of low-density-parity-check (LDPC) codes. The method includes identifying a code rate for an LDPC code in the family, identifying a protograph for the LDPC code, and constructing a base matrix for the LDPC code. The base matrix is constructed by replacing each zero in the protograph with a '−1', selecting a corresponding value for an absolute shift for each one in the protograph based on constraining a number of relative shifts per column of the LDPC code to one and increasing a size of a smallest cycle in a graph of the LDPC code, and replacing each one in the protograph with the corresponding value.