Mapping optimisation for turbo-equalisation improved by iterative demapping

Mapping optimisation for turbo-equalisation improved by iterative demapping

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A design rule for mapping optimisation adapted to the turbo-equalisation improved by iterative demapping is presented. It is demonstrated that owing to a carefully designed mapping, different to the classical Gray mapping, bit error rate performance is improved for a frequency-selective channel.


    1. 1)
      • C. Laot , A. Glavieux , J. Labat . Turbo equalization: adaptive equalization and channel decoding jointly optimized. IEEE J. Sel. Areas Commun. , 9 , 1744 - 1752
    2. 2)
      • Ten Brink, S., Speidel, J., Yan, R.: `Iterative demapping and decoding for multilevel modulations', Proc. GLOBECOM'98, May 1998, New York, USA.
    3. 3)
      • Magniez, P., Muquet, B., Duhamel, P., De Courville, M.: `Improved turbo-equalization with application to bit-interleaved modulations', ASILOMAR Conf. on Signals, Systems and Computers, October 2000, Pacific Grove, CA, USA.
    4. 4)
      • Langlais, C., Helard, M.: `Optimization of the equalization and the interleaving in turbo-equalization for frequency selective fading channels', ICC'02, April–May 2002, New York, USA.
    5. 5)
      • Berrou, C., Glavieux, A., Thitimajshima, P.: `Near Shannon limit error correcting coding and decoding: turbo-codes', ICC'93, June 1993, Geneva, Switzerland.

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