Patent ID: 8368466
Filing Date: 2013-02-05
Classification: H03F

Abstract:
1. A method of compensating for distortion of an input signal by an electronic device that operates on the input signal to produce an output signal, said method comprising: computing a set of model coefficients for a two-dimensional lattice prediction model of a basis function set from a set of input signal samples over a predetermined sampling interval, wherein the lattice prediction model represents basis functions in a predistorter basis function set as different combinations of power basis functions; determining, from said set of model coefficients, a corresponding set of predistorter connection coefficients for combining power basis function output signals from the power basis functions to generate basis function output signals; computing a set of power basis function output signals from an input signal and the set of power basis functions; applying the set of predistorter connection coefficients to the power basis function output signals to produce a set of basis function output signals; and combining the basis function output signals to produce a predistorted input signal from the input signal.