Pulse or digital communications – Synchronizers – Feedback – receiver to transmitter
Reexamination Certificate
2007-05-31
2011-11-29
Fan, Chieh M (Department: 2611)
Pulse or digital communications
Synchronizers
Feedback, receiver to transmitter
C375S357000, C375S356000, C375S355000
Reexamination Certificate
active
08068574
ABSTRACT:
In an embodiment, a digital pre-distortion apparatus processes an input signal to produce a pre-distorted signal, and processes the pre-distorted signal to produce a feedback signal. The apparatus also rotates an adjustment gain by a gain rotation angle to produce a rotated adjustment gain, where the gain rotation angle is based on a phase difference between the input signal and the feedback signal. The apparatus also applies the rotated adjustment gain to the feedback signal, which may result in rotation of the feedback signal into a target phase region.
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Chen Jau-Horng
Norris George
Staudinger Joseph
Fan Chieh M
Freescale Semiconductor Inc.
Garcia Santiago
Ingrassia Fisher & Lorenz PC
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