Waveform equalization controller and waveform equalization...

Details Waveform equalization controller and waveform equalization... Waveform equalization controller and waveform equalization...

2005-06-14

2005-06-14

Fan, Chieh M. (Department: 2634)

Pulse or digital communications

Equalizers

Automatic

C375S229000, C375S230000

Reexamination Certificate

active

06907064

ABSTRACT:
A waveform equalization controller which combines a follow-up property when the distortion is varied and there is a higher convergence speed at the initial operation, and a higher stability at a low C/N time, and which realizes a high performance and a low cost in a waveform equalizer. The waveform equalization controller controls the updating of a tap coefficient, and comprises a waveform equalizer for reducing a transmission line distortion of an input signal based on a LMS algorithm, an error estimation unit for estimating an error signal from an output signal of the waveform equalizer and outputting the error signal, a step size decision unit for generating a step size having an arbitrary size and outputting the step size, and a coefficient updating amount calculation unit for calculating a tap coefficient updating amount based on the error signal, the step size and a tap coefficient updating data.

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