Cooperative space-time coding for wireless networks

Andrej Stefanov, Elza Erkip

Research output: Contribution to journalArticlepeer-review


We consider a cooperative transmission scheme in which the collaborating nodes may have multiple antennas. We present the performance analysis and design of space-time codes that are capable of achieving the full diversity provided by user cooperation. Our codes use the principle of overlays in time and space, and ensure that cooperation takes place as often as possible. We show how cooperation among nodes with different numbers of antennas can be accomplished, and how the quality of the interuser link affects the cooperative performance. We illustrate that space-time cooperation can greatly reduce the error rates of all the nodes involved, even for poor interuser channel quality.

Original languageEnglish (US)
Pages (from-to)1804-1809
Number of pages6
JournalIEEE Transactions on Communications
Issue number11
StatePublished - Nov 2005


  • Cooperative diversity
  • Diversity methods
  • Error-correction coding
  • Fading channels
  • Multiple-input multiple-output (MIMO) systems

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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