Full-rate distributed space-time codes for cooperative communications

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Abstract

A full-rate distributed space-time (ST) code design is proposed for amplify-and-forward cooperative wireless channels. By employing a signal space diversity technique at the source node and a unique signature vector at each relay node, the proposed distributed ST codes can achieve full cooperative diversity and full rate. The achievable diversity gain is shown to be M + 1, where M is the number of relay nodes. Optimal power allocation is also proposed to maximize the coding gain under a total power constraint.

Original languageEnglish
Article number4570208
Pages (from-to)2446-2451
Number of pages6
JournalIEEE Transactions on Wireless Communications
Volume7
Issue number7
DOIs
Publication statusPublished - 1 Jul 2008

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Keywords

  • Cooperative diversity
  • Diversity technique
  • Relay channels
  • Space-time coding

ASJC Scopus subject areas

  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Applied Mathematics

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