Adaptive predistortion for transmit system with gain, phase...

Details Adaptive predistortion for transmit system with gain, phase... Adaptive predistortion for transmit system with gain, phase...

2006-04-25

2006-04-25

Nguyen, Patricia (Department: 2817)

Amplifiers

Hum or noise or distortion bucking introduced into signal...

C330S107000, C330S136000

Reexamination Certificate

active

07034613

ABSTRACT:
Systems and methods relating to the provision of gain, phase and delay adjustments to signals to be used by a predistortion subsystem. A portion of an input signal is delayed by delay elements prior to being received by the predistortion subsystem. The delayed input signal portion is also received by a feedback signal processing subsystem that adjusts the gain and phase of the feedback signal based on the delayed input signal portion. The adjusted feedback signal is used, along with the delayed portion of the input signal, to determine an appropriate predistortion modification to be applied to the input signal.

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Michael Faulkner; Adaptive Linearization Using Predistortion—Experimental Results, IEEE Transactions on Vehicular Technology; May 1994; pp 323-332; vol. 43, No. 2.

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