Patent ID: 7505530

Claim:
A method, by means of digital pre-distortion, of linearizing an output signal from an inherently non-linear device producing intermodulation or non-linear products in its output signal, the method comprising: sampling an original signal with a first sampling rate for a desired signal resolution of an achieved digital original signal message; re-sampling the original signal at a second sampling rate for creating a digital pre-distortion signal, the second sampling rate being greater than the first sampling rate; performing a digital to analog conversion of the digital sample original signal to obtain an analog-converted original signal and performing a digital to analog conversion of the digital pre-distortion signal to obtain an analog-converted pre-distortion signal; adding the analog-converted original signal and the analog-converted pre-distortion signa 1 , thereby forming a pre-distorted signal to be fed to the inherently non-linear device.