Adaptive maximum likelihood sequence estimator using channel...

Details Adaptive maximum likelihood sequence estimator using channel... Adaptive maximum likelihood sequence estimator using channel...

H - Electricity

04

L

H04L 1/00 (2006.01) H03M 13/39 (2006.01) H04L 25/02 (2006.01) H04L 25/03 (2006.01)

Patent

CA 2069993

An adaptive sequence decoder comprises a maximum likelihood sequence estimator for deriving a decision sequence of a received signal in response to a control signal. Channel estimators of zero-th to m-th order of channel impulse response are connected to the MLSE to produce a first signal representing a respective order of a replica of a transmitted signal and a second signal representing a respective order of channel impulse response. The first signals from the channel estimators are summed to produce the replica of the transmitted signal for comparison with the received sequence to produce an error signal, and the second signals are summed to produce the control signal. At periodic intervals, the MLSE control signal is initialized and the zero-th order channel estimator is reset to the initialized control signal, and the other channel estimators are reset to respective initial values to prevent time dispersion.

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