Patent ID: 8170507

Claim:
A method to perform predistortion to linearize a pre-power amplifier in a communication transceiver, the method comprising: performing an initial calibration procedure to determine a plurality of predistortion values corresponding respectively to a plurality of input calibration values applied to the pre-power amplifier, wherein the plurality of predistortion values are stored in at least one look-up table and comprise a plurality of amplitude modulation (AM) predistortion values to counteract AM/AM distortion of an input signal by the pre-power amplifier and a plurality of phase modulation (PM) predistortion values to counteract AM/PM distortion of the input signal by the pre-power amplifier; and performing a subsequent compensation procedure to estimate a parameter of a parametric expression characterizing a distortion exhibited by the pre-power amplifier and to evaluate the parametric expression to update at least one of the plurality of predistortion values.