Toward increasing packet diversity for relaying LT fountain codes in wireless sensor networks

Anya Apavatjrut, Claire Goursaud, Katia Jaffres-Runser, Cristina Comaniciu, Jean Marie Gorce

Research output: Contribution to journalArticlepeer-review

37 Scopus citations

Abstract

Diversity is a powerful means to increase the transmission performance of wireless communications. For the case of fountain codes relaying, it has been shown previously that introducing diversity is also beneficial since it counteracts transmission losses on the channel. Instead of simply hop-by-hop forwarding information, each sensor node diversifies the information flow using XOR combinations of stored packets. This approach has been shown to be efficient for random linear fountain codes. However, random linear codes exhibit high decoding complexity. In this paper, we propose diversity increased relaying strategies for the more realistic and lower complexity Luby Transform code in a linear network. Results are provided herein for a linear network assuming uniform imperfect channel states.

Original languageEnglish
Article number5648738
Pages (from-to)52-54
Number of pages3
JournalIEEE Communications Letters
Volume15
Issue number1
DOIs
StatePublished - Jan 2011

Keywords

  • Diversity
  • LT code
  • fountain code
  • linear networks
  • relaying algorithms
  • wireless sensor network

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