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1. (WO2003056705) LDPC CODE INSPECTION MATRIX GENERATION METHOD

Pub. No.:    WO/2003/056705    International Application No.:    PCT/JP2002/013518
Publication Date: Jul 10, 2003 International Filing Date: Dec 25, 2002
IPC: H03M 13/11
H03M 13/25
Applicants: MITSUBISHI DENKI KABUSHIKI KAISHA

MATSUMOTO, Wataru

Inventors: MATSUMOTO, Wataru

Title: LDPC CODE INSPECTION MATRIX GENERATION METHOD
Abstract:
An LDPC code inspection matrix generation method includes a step of analyzing the 'Sum-Product algorithm' of the LDPC code by assuming that the logarithm liklihood ratio of the I/O data in the decoder can be approximated to the Gaussian distribution, a step of one linear programming to search for the most appropriate ensemble of line weight and row weight so that the Gaussian noise is maximum while the coding rate is fixed, and a step of generating an LDPC code inspection matrix according to the ensemble.