| 摘要 |
<p>An apparatus for compensating a distortion characteristic of an amplifier (20) includes a distortion compensation coefficient update unit (14) configured to store a distortion compensation coefficient, configured to calculate the coefficient based on a signal before input to the amplifier (20) and a feedback signal, and configured to update the stored coefficient to the calculated coefficient; a distortion compensation unit (12) configured to perform distortion compensation processing of the signal before input to the amplifier (20) by using the updated coefficient; a delay unit (16) configured to delay the signal before input to the amplifier (20) by a set delay time, to output the delayed signal to the distortion compensation coefficient update unit (14); and a delay controller (30) configured to control the set delay time based on a phase of a complex number having a power component of the signal before input to the amplifier (20) as a real part, and a power component of the feedback signal as an imaginary part.</p> |
