Predistortion linearizer and predistortion compensation method and program

摘要

A predistortion linearizer has signal dividing means of dividing an input signal that has been input, into two signals; signal adjusting means of using one of the divided signals to execute predetermined adjustment and outputting a signal based on a result of the adjustment; distortion signal generating means of generating a distortion signal using the signal output from the signal adjusting means; signal synthesizing means of synthesizing the other of the divided signals with the generated distortion signal; and signal amplifying means of amplifying the synthesized signal and outputting an output signal, and wherein the signal adjusting means executes the predetermined adjustment such that (1) there is a predetermined relationship between the level of a difference between the signal amplitudes of predetermined frequency components contained in a distortion signal generated by the distortion signal generating means and the level of a difference between the signal amplitudes of the predetermined frequency components contained in a distortion signal generated by the signal amplifying means and/or (2) there is a predetermined relationship between a difference between the phases of the predetermined frequency components contained in the distortion signal generated by the distortion signal generating means and a difference between phases of the predetermined frequency components contained in the distortion signal generated by the signal amplifying means. <IMAGE>