Distortion compensating apparatus, amplifying apparatus, transmitting apparatus, and distortion compensating method

摘要

A distortion compensating apparatus (110) that compensates signal distortion caused by an amplifier (120) includes a distortion compensating process unit (111) that using a distortion compensation coefficient, compensates distortion of an input signal; a memory unit (114) that stores the distortion compensation coefficient; and an address generating unit (112) that generates a first address that is based on electrical power of the input signal and for acquiring the distortion compensation coefficient from the memory unit (114) and that generates a second address that is based on a phase of the input signal and for acquiring the distortion compensation coefficient from the memory unit (114). The distortion compensating process unit (111) acquires the distortion compensation coefficient from the memory unit (114) based on the first and the second addresses to compensate the distortion.