Patent ID: 7113037

Claim:
A method for estimating non-linearity of a power amplifier, comprising: receiving a plurality of signals at a first location, the plurality of signals comprising an input signal, a pre-distorted signal, and an output signal, the input signal being pre-distorted to yield the pre-distorted signal, the pre-distorted signal being amplified by a power amplifier to yield the output signal, the output signal exhibiting distortion with respect to the input signal, the distortion comprising a non-linearity effect, the power amplifier located at a second location remote from the first location; estimating non-linearity of the power amplifier in accordance with the signals at the first location using an inverse model; calculating pre-distortion information according to the estimated non-linearity using the inverse model; and sending the pre-distortion information to a pre-distorter at the second location, the pre-distorter operable to reduce the non-linearity effect using the pre-distortion information.