Patent ID: 8712345

Claim:
A distortion compensation device comprising: a frequency-characteristic adding unit configured to add a frequency characteristic to an error signal to generate an added error signal, the error signal being a difference between an input signal input to an amplifier and an output signal output from the amplifier; a distortion-compensation-coefficient updating unit configured to update a distortion compensation coefficient for compensating for a distortion characteristic of the amplifier based on the added error signal; and a distortion compensation unit configured to perform distortion compensation on the input signal using the updated distortion compensation coefficient, wherein the frequency characteristic is set such that a first distortion level of the output signal satisfies a first standard value and a second distortion level of the output signal satisfies a second standard value, the first distortion level having a first frequency band lower than a frequency band of the input signal, the second distortion level having a second frequency band higher than the frequency band of the input signal.