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.:

US 7451374 B1

PDF
Full Text
Expired
Date of Patent:
Nov. 11, 2008

Filed:

Jul. 27, 2005
Applicants:

Nam-shik Kim, Seoul, KR;

Hyun-cheol Park, Daejeon, KR;

Seung-bum Suh, Seoul, KR;

Eoi-young Choi, Seoul, KR;

Inventors:

Nam-Shik Kim, Seoul, KR;

Hyun-Cheol Park, Daejeon, KR;

Seung-Bum Suh, Seoul, KR;

Eoi-Young Choi, Seoul, KR;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L 1/779 (2006.01);
U.S. Cl.
CPC ...
Abstract

Disclosed are an apparatus and a method for reducing the coding complexity in an LDPC code used in a digital communication system. In the method, parameters required for coding are determined according to a coding rate and a code length, a seed matrix is generated according to values of the parameters, a plurality of cell matrices are generated according to the values of the parameters, a parity check matrix is generated using the seed matrix and the cell matrix, and information bits are coded from the parity check matrix. The method can be realized by a small memory and a simple shift register and can perform coding even without obtaining a generation matrix, thereby remarkably reducing the complexity of a system.


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Kim, Nam-Shik. (2008). Apparatus and method for channel coding in mobile communication system (U.S. Patent No. 7451374). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7451374

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