Samsung Electronics Co., Ltd.

Postech Academy-industry Foundation

Hyun-Gu Yang

Hong-Sil Jeong

Dong-seek Park

Se-Ho Myung

Kyeong-Cheol Yang

Jae-Yoel Kim

Chi-Woo Lim

Seung-Hoon Choi

Gyu-Bum Kyung

Jae-Yeol Kim

Disclosed is a method and apparatus for completely recovering received data with high reliability using LDPC codes without short-sized cycles in a digital communication system using an error-correcting code. The method includes performing exponent conversion of a predetermined number of exponent matrixes stored in advance in a memory so as to generate new exponent matrixes based on the exponent conversion, and generating new LDPC codes using the new exponent matrixes.

Method of generating quasi-cyclic low density parity check codes and an apparatus thereof

An apparatus and method for coding a semi-systematic block low density parity check (LDPC) code in which an information word is received and coded into a codeword including the information word, a first parity, a second parity, and a third parity, based on one of a first parity check matrix and a second parity check matrix, depending on a size to be applied when generating the information word into a semi-systematic block LDPC code. A part having a degree being at least equal to a predetermined degree is punctured from the information word, generating the semi-systematic block LDPC code. The semi-systematic block LDPC code includes the information word, the part of which was punctured, the first parity, the second parity, and the third parity.

Apparatus and method for coding and decoding semi-systematic block low density parity check codes

Growing community of inventors

Pohang-si, South Korea

Hyun-Gu Yang