Pulse or digital communications – Synchronizers – Phase displacement – slip or jitter correction
Reexamination Certificate
2007-02-27
2007-02-27
Ghebretinsae, Temesghen (Department: 2611)
Pulse or digital communications
Synchronizers
Phase displacement, slip or jitter correction
C375S362000, C375S375000, C375S226000
Reexamination Certificate
active
10112128
ABSTRACT:
Improved frequency drift and phase error compensation in a VOFDM receiver. The invention is operable to compensate for frequency drift and phase error within a window that may include a single frame, a sub-frame, or multiple frames. The compensation is performed after having performed estimation of the phase within the particular window; any phase error and frequency drift may be identified and an appropriate form of compensation may be identified to perform curve fitting of the phase within the compensation window. The curve fitting of the phase is performed using linear techniques in one embodiment; an average phase and appropriate slope/ramp are calculated to match the phase as accurately as possible. Other alternative compensation techniques may also be performed, including higher order curve matching techniques. The receiver is operable to perform any necessary compensation before passing the now-compensated data to a symbol processing functional block.
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Broadcom Corporation
Garlick & Harrison & Markison
Ghebretinsae Temesghen
Short Shayne X.
Torres Juan Alberto
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