07966548 is referenced by 7 patents and cites 11 patents.

In a system for parity encoding data using a low density parity check (LDPC) code, a rate-compatible, irregular LDPC code is generated by extending a base code using a constrained edge growth operation and a parity splitting operation. The base code is a “daughter” code having an encoding rate higher than a designated rate of the LDPC code. The daughter code is progressively extended to lower and lower rates such that each extension code (including the target LDPC code) is compatible with the previously obtained codes. The extension operation may involve introducing a set of new code symbols to the daughter code, by splitting check nodes of a base graph associated with the daughter code, and through constrained edge growth of the base graph. The LDPC code is used to parity encode a data message as a means for forward error correction across a communication channel.

Title
Method and system for encoding data using rate-compatible irregular LDPC codes based on edge growth and parity splitting
Application Number
11/824408
Publication Number
7966548 (B2)
Application Date
June 29, 2007
Publication Date
June 21, 2011
Inventor
Robert Atmaram Soni
Randolph
NJ, US
Noah Jacobsen
Morristown
NJ, US
Agent
McCormick Paulding & Huber
Assignee
Alcatel Lucent USA
NJ, US
IPC
H03M 13/35
View Original Source