Data synchronizer phase detector and method of operation thereof

Details Data synchronizer phase detector and method of operation thereof Data synchronizer phase detector and method of operation thereof

1996-01-02

1998-06-30

Vo, Don N.

Pulse or digital communications

Synchronizers

Synchronizing the sampling time of digital data

375373, 327159, H04L 702

Patent

active

057745080

ABSTRACT:
In a data synchronizer a timing error estimator samples a received stream of digitized data symbols at the beginning, end, and a mid-point of a symbol period. These samples are used with a model that assumes that a data stream waveform should transition along a straight line between its values at optimum sampling instances, separated by the symbol period. Differences between a mid-symbol sample estimated using this straight line model and the actual mid-symbol sample are assumed to be due to a timing error. The timing error estimator performs computations on complex inputs and therefore is compatible with a wide variety of modulation types.

REFERENCES:
patent: 4768208 (1988-08-01), Cornett
patent: 5216554 (1993-06-01), Schneider
patent: 5255289 (1993-10-01), Tomita
patent: 5426671 (1995-06-01), Bergmans
patent: 5559840 (1996-09-01), Melas et al.

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