Patent ID: 7026872

Claim:
A system for processing an input signal, the system comprising: a signal processing subsystem receiving and processing said input signal and producing a system output signal; an adaptive predistortion subsystem receiving at least two internal input signals and producing at least two predistorted signals by applying a deliberate predistortion to said at least two internal input signals; a feedback signal processing subsystem for receiving and processing a feedback signal derived from said system output signal; and a delay subsystem for providing a delay to a replica of said input signal to produce a delayed signal, said delayed signal being used by said adaptive predistortion subsystem and said feedback processing subsystem, wherein said adaptive predistortion subsystem distorts said input signal to compensate for distortions in said system output signal; said signal processing subsystem decomposes said input signal into separate components to produce said at least two internal input signals, each of said separate components being processed separately; said processing subsystem combines said predistorted signals after processing to produce said system output signal; an output of said feedback processing subsystem is used by said adaptive predistortion subsystem; said deliberate predistortion applied to said input signal by said adaptive predistortion subsystem to produce said predistorted signal is adjusted based on said system output signal.