High-rate complex orthogonal space-time block codes for high number of transmit antennas

Changlong Xu, Yi Gong, Khaled Letaief

Research output: Contribution to journalArticle

14 Citations (Scopus)


Based on orthogonal designs, space-time (ST) block codes that enable full diversity as well as a simple maximum likelihood (ML) decoding algorithm at the decoder can be constructed for more than two transmit antennas. For real constellations (such as PAM), ST block codes with transmission rate 1 can be designed from the real Hurwitz-Radon families for any number of transmit antennas. However, for complex constellations (such as M-PSK or M-PAM), ST block codes for more than two transmit antennas can only be constructed with rates less than 1. Previous attempts have been concentrated on complex orthogonal designs that provide ST block codes with full diversity and high transmission rates. In this paper, we present two rate 2/3 complex ST block codes from orthogonal designs for five and six transmit antennas, respectively.

Original languageEnglish
Pages (from-to)823-826
Number of pages4
JournalIEEE International Conference on Communications
Publication statusPublished - 2004
Externally publishedYes



  • Orthogonal design
  • Space-time block code
  • Transmit diversity

ASJC Scopus subject areas

  • Media Technology

Cite this