A robust STBC-based transmit diversity scheme for OFDM systems over spatially transmit correlated fading channels

Eunseok Ko, Daesik Hong

Research output: Contribution to journalArticle

10 Citations (Scopus)


In this paper, we propose a robust space-time block coded (STBC)-based transmit diversity scheme with low decoding complexity against spatially transmit-correlated fading channels compared with the conventional STBC orthogonal frequency-division multiplexing (STBC-OFDM) schemes. The proposed scheme is comprised of Alamouti code for spatial diversity and a simple mapping process with subcarrier selection for frequency diversity. Proceeding from a detailed analysis of the rank and determinant of the channel correlation matrix, we present a proper subcarrier selection scheme satisfying the conditions for robustness against spatial transmit correlation. Furthermore, when the receiver employs a low-complexity decoder such as a zero-forcing decoder, the proposed scheme shows improved performance compared with the existing space-frequency coded OFDM schemes.

Original languageEnglish
Pages (from-to)984-991
Number of pages8
JournalIEEE Transactions on Vehicular Technology
Issue number2
Publication statusPublished - 2007 Mar 1


All Science Journal Classification (ASJC) codes

  • Automotive Engineering
  • Aerospace Engineering
  • Electrical and Electronic Engineering
  • Applied Mathematics

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