LDPC Code Design for Half-Duplex Decode-and-Forward Relaying

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dc.citation.bibtexNameinproceedingsen_US
dc.citation.conferenceNameAllerton Conference on Communication, Control and Computingen_US
dc.contributor.authorChakrabarti, Arnaben_US
dc.contributor.authorde Baynast, Alexandreen_US
dc.contributor.authorSabharwal, Ashutoshen_US
dc.contributor.authorAazhang, Behnaamen_US
dc.contributor.orgCenter for Multimedia Communications (http://cmc.rice.edu/)en_US
dc.date.accessioned2007-10-31T00:39:12Zen_US
dc.date.available2007-10-31T00:39:12Zen_US
dc.date.issued2005-09-01en_US
dc.date.modified2006-06-01en_US
dc.date.note2006-06-01en_US
dc.date.submitted2005-09-01en_US
dc.descriptionConference Paperen_US
dc.description.abstractWe propose LDPC code designs for the half-duplex relay channel. Our designs mimic the information theoretic random coding scheme for decode-and-forward relaying. An important advantage of our scheme is that it is built entirely of single-user codes that can be decoded by belief propagation. The optimization of relay LDPC code profiles presents unique challenges, which are met by using the density evolution algorithm with additional constraints for relaying. To speed up our optimization, we use a Gaussian approximation of density evolution that converts the infinite dimensional code profile optimization into a simple linear programming problem. The thresholds of the discovered relay code profiles are within 0.4 dB of the achievable lower bound for decode-and-forward relaying.en_US
dc.identifier.citationA. Chakrabarti, A. de Baynast, A. Sabharwal and B. Aazhang, "LDPC Code Design for Half-Duplex Decode-and-Forward Relaying," 2005.en_US
dc.identifier.urihttps://hdl.handle.net/1911/19779en_US
dc.language.isoengen_US
dc.subjectrelayen_US
dc.subjectLDPCen_US
dc.subjectdecode-and-forwarden_US
dc.subject.keywordrelayen_US
dc.subject.keywordLDPCen_US
dc.subject.keyworddecode-and-forwarden_US
dc.titleLDPC Code Design for Half-Duplex Decode-and-Forward Relayingen_US
dc.typeConference paperen_US
dc.type.dcmiTexten_US
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