08140930 is referenced by 41 patents and cites 15 patents.

The present invention is intended to provide an LDPC coding scheme which is capable of efficiently implementing a high-performance and high-speed encoder and decoder of an error correcting code suitable for the field of communications such as mobile communications. As to the configuration, a Tanner graph for representing codes with variable nodes and check nodes is used to classify the individual nodes into a plurality of categories. For calculating a probability propagation in iterative decoding, weighting previously determined for each category is performed on a log-likelihood ratio (LLR) subjected to propagation.

Title
Encoder and decoder by LDPC coding
Application Number
11/914328
Publication Number
8140930 (B1)
Application Date
April 18, 2006
Publication Date
March 20, 2012
Inventor
Tsuguo Maru
Tokyo
JP
Assignee
NEC Corporation
JP
IPC
H03M 13/00
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