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Bitrate-maximizing time-domain equalizer design for DMT-based systems

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5 Author(s)
K. Vanbleu ; Katholieke Univ. Leuven-ESAT/SCD, Leuven-Heverlee, Belgium ; G. Ysebaert ; G. Cuypers ; M. Moonen
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A time-domain equalizer (TEQ) is inserted in discrete multitone (DMT) receivers to impose channel shortening. Many algorithms have been developed to initialize this TEQ, but none of them really optimizes the bitrate. We present a truly bitrate-maximizing TEQ (BM-TEQ) cost function that is based on an exact formulation of the subchannel signal-to-noise ratio as a function of the TEQ taps. The performance of this BM-TEQ comes close to the performance of the per-tone equalizer.

Published in:

IEEE Transactions on Communications  (Volume:52 ,  Issue: 6 )