Low-power and low-cost adaptive self-linearization system with fast convergence

A system, comprising:

• a radio frequency receiver configured to receive an undistorted signal;
• a separation block configured to:
• generate, using a plurality of adaptable coefficient multipliers, a reference signal component of a signal and an error signal, wherein the signal is a distorted version of the undistorted signal,
• update the plurality of adaptable coefficient multipliers based on the error signal, and
• generate, based on the reference signal component, a target signal component of the signal, wherein the reference signal component and the target signal component are related by a first transfer function;
• and
• a digital signal processor (DSP) configured to:
• filter the reference signal component according to a second transfer function to provide a filtered version of the reference signal component, and
• adjust the second transfer function such that the target signal component and the filtered version of the reference signal component are substantially equal.

A method, comprising:

• receiving, using a wireless receiver, an undistorted signal;
• generating, using a plurality of adaptable coefficient multipliers of the wireless receiver, a reference signal component of a signal and a first error signal wherein the signal is a distorted version of the undistorted signal,;
• updating the plurality of adaptable coefficient multipliers based on the first error signal;
• generating, based on the reference signal component, a target signal component of the signal;
• filtering the reference signal component according to a plurality of filter coefficients to provide an output signal;
• subtracting the output signal from the target signal component to provide a second error signal;
• and
• adjusting the plurality of filter coefficients to drive the second error signal to a predetermined value.