Space-time coding techniques with bit-interleaved coded modulations for MIMO block-fading channels

The space-time bit-interleaved coded modulation (ST-BICM) is an efficient technique to obtain high diversity and coding gain on a block-fading MIMO channel. Its maximum-likelihood (ML) performance is computed under ideal interleaving conditions, which enables a global optimization taking into account channel coding. Thanks to a diversity upperbound derived from the Singleton bound, an appropriate choice of the time dimension of the space-time coding is possible, which maximizes diversity while minimizing complexity. Based on the analysis, an optimized interleaver and a set of linear precoders, called dispersive nucleo algebraic (DNA) precoders are proposed. The proposed precoders have good performance with respect to the state of the art and exist for any number of transmit antennas and any time dimension. With turbo codes, they exhibit a frame error rate which does not increase with frame length.Comment: Submitted to IEEE Trans. on Information Theory, Submission: January 2006 - First review: June 200

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Our friend, Daniel Forthomme, passed away last November 25. This text, dedicated to his memory, list his numerous contributions to optometrists and optometry. Notre ami, Daniel Forthomme, est décédé le 25 novembre dernier. Ce texte, dédié à sa mémoire, énumère ses nombreuses contributions aux optométristes et à l’optométrie

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Daniel Forthomme had a profound influence on many of us and on our profession. Throughout his long career as an optometrist, professor, di-rector of the School of Optometry and of Optométristes Sans Frontières, he adapted to change, always giving his best; hence his remarkable influence on all Quebec op-tometrists and on our profession

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