EXIT chart applied to frequency domain turbo equalization for single carrier space-time block code per block

Conference: SCC'08 - 7th International ITG Conference on Source and Channel Coding
01/14/2008 - 01/16/2008 at Ulm, Germany

Proceedings: SCC'08

Pages: 6Language: englishTyp: PDF

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Armando, Patricia; Amis, Karine; Roux, Dominique Le (GET-ENST Bretagne, Signal and Communication Department/TAMCIC CNRS UMR 2872, Technopôle Brest-Iroise, CS 83818, 29238 Brest Cedex 3, France)

This paper is focused on the study of the convergence of the frequency domain turbo equalizer for space-time encoded signals with single-carrier modulation. For this study we employ the extrinsic information transfer chart. We use spacetime coding schemes adapted to frequency-selective channels and an efficient generalized receiver based on a space-time frequency domain detector. We study the influence of the orthogonal space-time code per block defined for 2 and 4 transmit antennas in the EXIT chart. Simulation results show that the scheme performs efficiently, for convolutional codes of memory 2, 3 and 5, over frequency-selective block fading channels for the second iteration and beyond.