Pilot-symbol-assisted detection scheme for distributed orthogonal space-time block coding

Hakam Muhaidat, Murat Uysal, Ravi Adve

Research output: Contribution to journalArticlepeer-review


In this letter, we investigate the effect of imperfect channel estimation on the performance of distributed space-time block codes (DSTBCs) with amplify-and-forward relaying. Exploiting the orthogonality of the underlying code, we derive a maximum likelihood metric conditioned on the channel estimate acquired through the insertion of pilot symbols. For a large number of pilot symbols, we demonstrate that the proposed decoding rule coincides with the so-called mismatched receiver. On the other hand, as the number of pilot symbols decreases, the proposed decoder converges to a non-coherent detector. Through Monte-Carlo simulations, we further demonstrate that the performance of the proposed scheme lies within 0.8dB of the genie receiver performance bound.

Original languageEnglish (US)
Article number4801445
Pages (from-to)1057-1061
Number of pages5
JournalIEEE Transactions on Wireless Communications
Issue number3
StatePublished - Mar 2009


  • Channel estimation
  • Cooperative diversity
  • Fading channels

ASJC Scopus subject areas

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


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