A novel orthogonal space-time-frequency block code for OFDM systems

  • Authors:

  • Keonkook Lee;Youngok Kim;Joonhyuk Kang

  • Affiliations:

  • Korea Advanced Institute of Science and Technology, Korea;Department of Electronic Engineering, Kwangwoon University, Korea;Korea Advanced Institute of Science and Technology, Korea

  • Venue:
  • IEEE Communications Letters
  • Year:
  • 2009

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Abstract

In this letter, we propose an orthogonal space-time-frequency block code for orthogonal frequency division multiplexing (STFBC-OFDM) systems, newly designed to be robust against both time- and frequency-selective fading. The performance of the proposed system is analyzed in spatially uncorrelated time-varying multipath Rayleigh-fading channels. The analytic results, which closely match the numerical results, show that the proposed system outperforms STBC-OFDM in time-varying channels and SFBC-OFDM in frequency-selective fading channels.