Exact Erasure Channel Density Evolution for Protograph-Based Generalized LDPC Codes

Summary, in English

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.

• Författare: Michael Lentmaier; Marcos B.S. Tavares; Gerhard Fettweis
• Publiceringsår: 2009
• Språk: Engelska
• Sidor: 566-570
• Publikation/Tidskrift/Serie: 2009 IEEE International Symposium on Information Theory
• Fulltext: - 138 kB; Download statistics
• Länkar: http://dx.doi.org/10.1109/ISIT.2009.5205688
• Dokumenttyp: Konferensbidrag
• Förlag: IEEE - Institute of Electrical and Electronics Engineers Inc.
• Ämne: Electrical Engineering, Electronic Engineering, Information Engineering
• Nyckelord: LDPC codes; generalized LDPC codes; GLDPC codes; EXIT charts; protograph
• Conference name: IEEE International Symposium on Information Theory (ISIT), 2009
• Conference date: 2009-06-28 - 2009-07-03
• Conference place: Seoul, Korea, Democratic People's Republic of
• Status: Published
• Forskningsgrupp: Telecommunication Theory
• ISBN/ISSN/Övrigt: ISBN: 978-1-4244-4312-3