Combined turbo coding and unitary space-time modulation

Israfil Bahceci, Tolga M. Duman

Research output: Contribution to journalArticlepeer-review

71 Scopus citations


Space-time coding is well understood for high data rate communications over wireless channels with perfect channel state information. On the other hand, channel coding for multiple transmit antennas when channel state information is unknown has only received limited attention. Recently, a new signaling scheme, named unitary space-time modulation, has been proposed for the latter case. In this paper, we consider the use of turbo coding together with unitary space-time modulation. We demonstrate that turbo coded space-time modulation systems are well suited to wireless communication systems when there is no channel state information, in the sense that the turbo coding improves the bit error rate (BER) performance of the system considerably. In particular, we observe that the turbo-coded system provides 10-15 dB coding gain at a BER of 10 -5 compared to the unitary space-time modulation for various transmit and receive antenna diversity cases.

Original languageEnglish (US)
Pages (from-to)1244-1249
Number of pages6
JournalIEEE Transactions on Communications
Issue number8
StatePublished - Aug 2002


  • Fading channels
  • MIMO systems
  • Space-time codes
  • Turbo codes
  • Unitary constellations

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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