System for reproducing timing clock signal

Details System for reproducing timing clock signal System for reproducing timing clock signal

H - Electricity

04

L

H04L 1/00 (2006.01) H04L 7/00 (2006.01) H04L 7/02 (2006.01)

Patent

CA 2050867

SYSTEM FOR REPRODUCING TIMING CLOCK SIGNAL ABSTRACT A timing clock reproducing system in a digital subscriber line communication for extracting an optimum phase of a clock signal, and comprising: a line equalizer (111) for shaping a waveform distorted by a transmission through a cable line; a PLL circuit (12) for generating a sampling timing control signal; an analog-to-digital converter (13) for sampling a signal received from the line equalizer at a timing controlled by the sampling timing control, and for converting the received signal into a digital signal; a decision feedback equalizer (114), the for outputting tap coefficients including a precursor equalizing tap coefficient; and an evaluating function deriving means (115) for deriving an evaluating function the based the PLL circuit (112) being controlled by the valuating function for adjusting a sampling timing of the analog-to-digital converter.

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