Patent ID: 7756592

Claim:
A method of controlling by feedback the behaviour of a plant having an input and an output, the method comprising the steps of: receiving an input signal; predistorting the input signal to provide a predistorted signal; deriving a plant input signal and a simulation input signal from the predistorted signal; applying the plant input signal to the input of the plant; deriving a plant feedback signal from an output of the plant; generating a simulated signal by simulating an assumed nonlinear behaviour of the plant in dependence on the simulation input signal; generating a difference signal by subtracting the simulated signal from the plant feedback signal; and, modifying the predistorted signal by feedback in dependence on the difference signal, wherein the step of modifying the predistorted signal by feedback is performed prior to the step of deriving the plant input signal and the simulation input signal from the input signal and wherein the modifying the predistorted signal by feedback is not configured to linearise the assumed nonlinear behavior of the plant.