Method of and circuit for adapting parameters for a predistortion circuit in an integrated circuit

A method of adapting parameters for a predistortion circuit in an integrated circuit, the method comprising:

• receiving, at the predistortion circuit, an input signal to be amplified by a power amplifier;
• applying parameters from a first parameter set to the predistortion circuit;
• determining a power value of the input signal;
• receiving an output of the power amplifier at an input of the integrated circuit;
• comparing an output by the predistortion circuit with the output of the power amplifier;
• and
• generating parameters for a second parameter set to be applied to the predistortion circuit.

An integrated circuit having a circuit for adapting parameters for a predistortion circuit of the integrated circuit, the circuit for adapting parameters comprising:

• a predistortion circuit coupled to receive an input signal;
• a memory storing the parameters for the predistortion circuit;
• a power measurement circuit coupled to receive the input signal coupled to the predistortion circuit and generate a power value for the input signal;
• a control circuit coupled to the memory and the power measurement circuit, the control circuit enabling the selection of parameters for the predistortion circuit;
• and
• an estimation circuit coupled to receive the output of the predistortion circuit and an output of a power amplifier, the estimation circuit generating updated parameters to be stored in the memory.