Bit-interleaved space-frequency coded modulation with iterative decoding for OFDM systems

Authors:
Deniz Rende;Xin Li;Tan F. Wong
Affiliations:
Department of Electrical & Computer Engineering, University of Florida, Gainesville, FL;Department of Electrical & Computer Engineering, University of Florida, Gainesville, FL;Department of Electrical & Computer Engineering, University of Florida, Gainesville, FL
Venue:
MILCOM'03 Proceedings of the 2003 IEEE conference on Military communications - Volume I
Year:
2003

Citing 4
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Abstract

We present a bit-interleaved space-frequency coded modulation (BI-SFCM) scheme with iterative decoding 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 multiple fiat 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 proposed to further improve peiformance by means of increased coding gain by employing iterative decoding between the outer convolutional code and the inner space-frequency modulation. Analytical bounds and simulations are used to evaluate the peiformance of BI-SFCM-ID.