Pre-Compensation Method and Pre-Compensation Circuit Thereof

A pre-compensation circuit, coupled to a power amplifier, comprising:

• a digital pre-distortion actuator, configured for performing pre-distortion according to at least one parameter or at least one hyperparameter to convert a first input signal received by the digital pre-distortion actuator into a first pre-distortion output signal;
• and
• a training module, configured for updating the at least one parameter or the at least one hyperparameter according to Bayesian Optimization, Causal Bayesian Optimization, or Dynamic Causal Bayesian Optimization, wherein the digital pre-distortion actuator performs pre-distortion according to the at least one parameter updated or the at least one hyperparameter updated to convert a second input signal received by the digital pre-distortion actuator into a second pre-distortion output signal.