Signal timing phase selection and timing acquisition...

Details Signal timing phase selection and timing acquisition... Signal timing phase selection and timing acquisition...

2007-07-09

2010-12-07

Tran, Khanh C (Department: 2611)

Pulse or digital communications

Synchronizers

Phase displacement, slip or jitter correction

Reexamination Certificate

active

07848474

ABSTRACT:
Signal timing phase selection and timing acquisition apparatus and techniques are disclosed. A timing phase that is most closely aligned with a phase of information carried by a received signal is selected from a plurality of timing phases. The selected timing phase may be used, for example, as a reference signal for a phase detector in a Phase-Locked Loop (PLL). The received signal may be sampled one or more times per timing phase. In a multiple-sample implementation, the samples may be used for timing phase selection, for detection of a known initial pattern of a burst of information to thereby detect the start time of a an information burst, or both.

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Floyd M. Gardner, “Equivocation as a Cause of PLL Hangup”, IEEE Transactions on Communications, vol. Com-30, No. 10, Oct. 1982; pp. 2242-2243.
Floyd M. Gardner, “Hangup in Phase-Lock Loops”; IEEE Transactions on Communications, vol. Com-25, No. 10, Oct. 1977; pp. 1210-1214.
D.P. Taylor, S.K. Tang, S. Mariuz; “The Limit-Switched Loop: A Phase-Locked Loop for Burst Mode Operation”; IEEE Transactions on Communications, vol. Com-30, No. 2, Feb. 1982; pp. 396-407.

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