Tracking the phase of a received signal

Details Tracking the phase of a received signal Tracking the phase of a received signal

2006-04-05

2009-10-20

Liu, Shuwang (Department: 2611)

Pulse or digital communications

Synchronizers

Phase displacement, slip or jitter correction

C375S354000, C375S355000, C375S362000, C327S141000, C327S144000, C358S409000, C713S400000, C713S401000, C714S012000

Reexamination Certificate

active

07606342

ABSTRACT:
The tracking of the phase of a received signal having a known preamble is accomplished by the steps of: initializing a phase-locked loop in accordance with estimated phase parameters, which are generated during an estimation interval by processing samples of the known preamble; delaying the preamble; generating phase error parameters by processing samples of the delayed preamble; and training the phase locked loop by tracking the phase-tracked signal in accordance with the tracking error parameters during a training interval after the estimation interval. The timing of the sampling is likewise trained in a closed timing loop in accordance with timing error parameters generated during the training interval after the timing loop has been initialized by estimated timing parameters generated during the estimation interval. The duration of the delay of the preamble is one-half the duration of the estimation interval.

REFERENCES:
patent: 7167535 (2007-01-01), Sachse et al.
patent: 7274758 (2007-09-01), Zhou et al.
patent: 7394870 (2008-07-01), Chien et al.
patent: 2005/0207519 (2005-09-01), Phang et al.
patent: 2008/0165672 (2008-07-01), Ku et al.

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