Bit-interleaved space-frequency coded modulation

In this research, we develop bit-interleaved space-frequency coded modulation (BI-SFCM) schemes for orthogonal frequency-division multiplexing OFDM) systems over frequency-selective channels. BI-SFCM is a space-frequency trellis coding method, based on bit-interleaved coded modulation (BICM) and multiple transmit and receive antennas. OFDM is used to transform a frequency-selective fading channel into a set of flat fading channels, and space-frequency trellis coding combined with bit-interleaving is used to exploit space and frequency diversity. BI-SFCM can provide increased data rates and improved performance. BI-SFCM with iterative decoding (BI-SFCM-ID) is considered to further improve performance by means of increased coding gain by employing iterative decoding between the outer convolutional code and the inner space-frequency modulation. A typical application of BI-SFCM is to increase the data rate of the IEEE 802.11 WLAN system.

Sponsors: NSF, ONR, and Intersil

Publications

  1. D. Rende and T. F. Wong, "Bit-Interleaved Space-Frequency Coded Modulation for OFDM Systems," IEEE Transactions on Wireless Communications, Sep. 2005.
  2. D. Rende, X. Li, and T. F. Wong, "Bit Interleaved Space-Frequency Coded Modulation with Iterative Decoding for OFDM Systems," in Proceedings of the IEEE Military Communications Conference (MILCOM '03), vol. 1, pp. 163-168, Boston, MA, Oct. 2003.
  3. D. Rende and T. F. Wong, "Bit Interleaved Space-Frequency Coded Modulation for OFDM Systems," in Proceedings of the IEEE International Conference on Communications (ICC '03), vol. 4, pp. 2827-2831, Anchorage, AK, May 2003.

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Last modified: 5/8/03