Space-Time Bit-Interleaved Coded Modulation for OFDM Systems

Inkyu Lee, Albert M. Chan, Carl Erik W. Sundberg

Research output: Contribution to journalArticle

87 Citations (Scopus)

Abstract

Space-time coding techniques significantly improve transmission efficiency in radio channels by using multiple transmit and/or receive antennas and coordination of the signaling over these antennas. Bit-interleaved coded modulation gives good diversity gains with higher order modulation schemes using well-known binary convolutional codes on a single transmit and receive antenna link. By using orthogonal frequency division multiplexing (OFDM), wideband transmission can be achieved over frequency-selective fading radio channels without adaptive equalizers. In this correspondence, we combine these three ideas into a family of flexible space-time coding methods. The pairwise error probability is analyzed based on the correlated fading assumption. Near-optimum iterative decoders are evaluated by means of simulations for slowly varying wireless channels. Theoretical evaluation of the achievable degree of diversity is also presented. Significant performance gains over the wireless local area network (LAN) 802.1 la standard system are reported.

Original languageEnglish
Pages (from-to)820-825
Number of pages6
JournalIEEE Transactions on Signal Processing
Volume52
Issue number3
DOIs
Publication statusPublished - 2004 Mar

Keywords

  • Iterative decoding
  • OFDM
  • Space-time codes

ASJC Scopus subject areas

  • Signal Processing
  • Electrical and Electronic Engineering

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