DISTORTION COMPENSATION DEVICE, AND DISTORTION COMPENSATION METHOD FOR POWER AMPLIFICATION DEVICE

摘要

PROBLEM TO BE SOLVED: To improve distortion compensation performance in a simple configuration.SOLUTION: A distortion compensation device includes a distortion compensation section 101 for outputting to a power amplifier 105 a pre-distortion signal obtained by performing a distortion compensation process using a distortion compensation coefficient on a transmission signal. The distortion compensation section 101 updates the distortion compensation coefficient on the basis of an error between a reference signal RS that is the signal subjected to the distortion compensation process and a feedback signal FS that is an output of the power amplifier 105 fed back. A first filter 114 and a second filter 103a limit bands of the reference signal RS and the feedback signal FS, respectively, into the same passband.