Online fountain codes with low overhead

Yuval Cassuto, Amin Shokrollahi

Research output: Contribution to journalArticlepeer-review

Abstract

An online fountain code is defined as a fountain code for which an optimal encoding strategy can be found efficiently given any instantaneous decoding state. This property is important for data distribution in practical networks. In this paper, we formalize the problem of online fountain code construction, and propose new online fountain codes that outperform known ones in having factor 3-5 lower redundancy overhead. The bounding of the code overhead is carried out using the analysis of the dynamics of random-graph processes.

Original languageEnglish
Article number7084659
Pages (from-to)3137-3149
Number of pages13
JournalIEEE Transactions on Information Theory
Volume61
Issue number6
DOIs
StatePublished - 1 Jun 2015

Keywords

  • Fountain codes
  • codes with feedback
  • on-line codes
  • random graphs
  • rateless codes

All Science Journal Classification (ASJC) codes

  • Information Systems
  • Computer Science Applications
  • Library and Information Sciences

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