Title :
Exact erasure channel density evolution for protograph-based generalized LDPC codes
Author :
Lentmaier, Michael ; Tavares, Marcos B S ; Fettweis, Gerhard P.
Author_Institution :
Dept. of Mobile Commun. Syst., Dresden Univ. of Technol. (TU Dresden), Dresden, Germany
fDate :
June 28 2009-July 3 2009
Abstract :
We derive explicit density evolution equations for protograph-based generalized LDPC codes on the binary erasure channel. They are obtained from an analysis of multi-dimensional input/output transfer functions of the component decoders. Belief propagation decoding with optimal component APP decoders is considered. Based on the resulting transfer functions, a threshold analysis is performed for some protograph examples.
Keywords :
binary codes; parity check codes; belief propagation decoding; binary erasure channel; component decoders; density evolution equations; exact erasure channel density evolution; multi-dimensional input/output transfer functions; protograph-based generalized LDPC codes; Belief propagation; Block codes; Convergence; Convolutional codes; Equations; Iterative decoding; Mobile communication; Parity check codes; Performance analysis; Transfer functions;
Conference_Titel :
Information Theory, 2009. ISIT 2009. IEEE International Symposium on
Conference_Location :
Seoul
Print_ISBN :
978-1-4244-4312-3
Electronic_ISBN :
978-1-4244-4313-0
DOI :
10.1109/ISIT.2009.5205688
