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Adaptive Baum-Welch algorithms for frequency-selective fading channels

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2 Author(s)
Nissila, M. ; VTT Electron., Oulu, Finland ; Pasupathy, S.

The problem of adaptive equalization of the time-varying frequency-selective channel is studied by using the adaptive Baum-Welch algorithm. In particular, blind LMS and blind RLS channel estimators are derived and they are combined with the well-known forward-backward processing SISO algorithm for known channels. An application of the proposed algorithms to the iterative "turbo-processing" receivers illustrated how the blind LMS and blind RLS estimators can efficiently utilize the extrinsic information obtained from the decoder SISO in order to enhance their estimation accuracy

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Communications, 2002. ICC 2002. IEEE International Conference on  (Volume:1 )

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