Baudrate timing recovery technique

Details Baudrate timing recovery technique Baudrate timing recovery technique

1989-08-11

1991-05-28

Safourek, Benedict V.

Pulse or digital communications

Repeaters

Testing

375 14, 375101, 3647242, 333 18, H04B 314, H03H 730

Patent

active

050200780

ABSTRACT:
A digital pulse receiver is disclosed in which the transmitted signal is recovered from the received signal by using a decision feedback equalizer to estimate and then remove the intersymbol interference. A second decision feedback equalizer is used to estimate the timing of the sampling pulse. An optimum timing phase is derived by driving the sampling clock with a phase adjustment signal optimizing the amplitude of the sampling pulse relative to the next preceding pre-cursor pulse. The signal recovery decision feedback equalizer and the timing recovery decision feedback equalizer share the same tapped delay line to provide a fully digital pulse receiver operating at the baud rate to provide an optimum sampling phase.

REFERENCES:
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patent: 4170758 (1979-10-01), Tamburelli
patent: 4504958 (1985-03-01), Tamburelli
patent: 4545060 (1985-10-01), Arnon
patent: 4597088 (1986-06-01), Posti et al.
patent: 4789994 (1988-12-01), Randall et al.
K. H. Mueller and M. Muller, "Timing Recovery in Digital Synchronous Data Receivers," IEEE Transactions on Communications, vol. COM-24, pp. 516-530, May 1976.
A. Jenning and B. R. Clarke, "Data-Sequence Selective Timing Recovery for PAM Systems," IEEE Transactions on Communications, vol. COM-33, pp. 729-731, Jul. 1985.
Simon Haykin, Adaptive Filter Theory, Prentice-Hall, New York, N.Y., 1986, pp. 216-217.
K. H. Muller and D. A. Spaulding, "Cyclic Equalization-A New Rapidly Converging Equalization Technique for Synchronous Data Communications," Bell System Technical Journal, vol. 54, pp. 369-406, Feb. 1975.

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