System and method for synchronization, power control, calibration, and modulation in communication transmitters
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United States of America Patent
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Jun 26, 2012
Grant Date -
Apr 14, 2011
app pub date -
Dec 16, 2010
filing date -
Mar 13, 2007
priority date (Note) -
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Abstract
A system is provided for processing a communication signal including a baseband amplitude component and a baseband phase component. The system includes an amplitude predictor configured for closed-loop pre-distortion of a baseband amplitude component, an amplitude lookup table configured for open-loop pre-distortion of the baseband amplitude component, and an amplitude interpolator configured to build up the amplitude lookup table during a closed-loop calibration period. The system also includes a phase predictor configured for closed-loop pre-distortion of a baseband phase component, a phase lookup table configured for open-loop pre-distortion of the baseband phase component, and a phase interpolator configured to build up the phase lookup table during a closed-loop calibration period.
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