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dc.contributor.authorChen, Chih-Mingen_US
dc.contributor.authorChen, Ying-Pingen_US
dc.contributor.authorShen, Tzu-Chingen_US
dc.contributor.authorZao, John K.en_US
dc.date.accessioned2014-12-08T15:33:37Z-
dc.date.available2014-12-08T15:33:37Z-
dc.date.issued2013-11-01en_US
dc.identifier.issn0916-8516en_US
dc.identifier.urihttp://dx.doi.org/10.1587/transcom.E96.B.2807en_US
dc.identifier.urihttp://hdl.handle.net/11536/23285-
dc.description.abstractLT codes are the first practical rateless codes whose reception overhead totally depends on the degree distribution adopted. The capability of LT codes with a particular degree distribution named robust soliton has been theoretically analyzed; it asymptotically approaches the optimum when the message length approaches infinity. However, real applications making use of LT codes have finite number of input symbols. It is quite important to refine degree distributions because there are distributions whose performance can exceed that of the robust soliton distribution for short message length. In this work, a practical framework that employs evolutionary algorithms is proposed to search for better degree distributions. Our experiments empirically prove that the proposed framework is robust and can customize degree distributions for LT codes with different message length. The decoding error probabilities of the distributions found in the experiments compare well with those of robust soliton distributions. The significant improvement of LT codes with the optimized degree distributions is demonstrated in the paper.en_US
dc.language.isoen_USen_US
dc.subjectLT codesen_US
dc.subjectdegree distributionen_US
dc.subjectforward error correctionen_US
dc.subjectevolutionary algorithmsen_US
dc.subjectdigital fountainen_US
dc.titleA Practical Optimization Framework for the Degree Distribution in LT Codesen_US
dc.typeArticleen_US
dc.identifier.doi10.1587/transcom.E96.B.2807en_US
dc.identifier.journalIEICE TRANSACTIONS ON COMMUNICATIONSen_US
dc.citation.volumeE96Ben_US
dc.citation.issue11en_US
dc.citation.spage2807en_US
dc.citation.epage2815en_US
dc.contributor.department資訊工程學系zh_TW
dc.contributor.departmentDepartment of Computer Scienceen_US
dc.identifier.wosnumberWOS:000327168100012-
dc.citation.woscount0-
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