Method and apparatus for performing digital timing recovery...

Details Method and apparatus for performing digital timing recovery... Method and apparatus for performing digital timing recovery...

2007-11-13

2007-11-13

Payne, David C. (Department: 2611)

Pulse or digital communications

Transceivers

Modems

C370S395620, C375S134000, C375S326000, C375S329000, C375S331000, C375S343000, C375S344000, C375S355000

Reexamination Certificate

active

10639384

ABSTRACT:
An apparatus and method for performing digital timing recovery includes a rotating demultiplexor receiving a four times oversampled baseband signal and providing four downsampled phases at respective outputs. Each output is processed by a correlation detector which computes a peak sum signal for each downsampled phase. The peak sum signals are processed to produce a best phase select output signal. The best phase select output signal is used to select the optimum sampling phase. Symbol timing is then determined based on the relative peak offset in the best downsampled phase.

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patent: 6519302 (2003-02-01), Bruce et al.
patent: 6657678 (2003-12-01), Mizukami et al.
patent: 6847694 (2005-01-01), Chevrette et al.
patent: 2003/0228855 (2003-12-01), Herz et al.

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