Patent Document ID: 6072364
Application ID: 08877479
Patent Flag: 1

Claim One:
1. An adaptive method for predistorting a signal to be transmitted, supplied by a signal source to an input of a power amplifier having an output for delivering an amplified output signal, comprising the steps of: predistorting the signal to be transmitted by means of predistortion amplitude and phase look-up table means interposed between the signal source and the input of the power amplifier; producing a first feedback signal in response to the predistorted signal; producing a second feedback signal in response to the amplified output signal from the power amplifier; delaying at least one of the first and second feedback signals for eliminating any time lag between said first and second feedback signals; modeling the power amplifier in response to the first and second feedback signals; and updating the predistortion amplitude and phase look-up table means in response to said modeling of the power amplifier.