Hybrid adaptive equalizer for optical communications systems

Details Hybrid adaptive equalizer for optical communications systems Hybrid adaptive equalizer for optical communications systems

2006-04-04

2006-04-04

Bocure, Tesfaldet (Department: 2631)

Pulse or digital communications

Equalizers

Automatic

C375S233000, C708S323000

Reexamination Certificate

active

07023912

ABSTRACT:
A method equalizes a received signal in an optical communications system. The received signal is passed through an analog delay line where it is tapped to generate a set of delayed copies of the received signal. In a set of analog multipliers, each delayed copy of the received signal is multiplied by a corresponding weight to generate a set of weighted signals that are then summed to produce an output signal. The output signal is thresholded and subtracted from the output signal to produce an error signal, which is periodically sampled. In a digital weight updating circuit, the weights are produced from digitized versions of the sampled error signal and samples of the delayed copies of the received signal.

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