CPC H03F 1/32 (2013.01) [H03F 3/245 (2013.01); H04B 1/0475 (2013.01); H03F 2200/171 (2013.01); H03F 2200/451 (2013.01); H03F 2201/3209 (2013.01); H04B 2001/0425 (2013.01)] | 8 Claims |
1. A distortion compensation device comprising:
a first distortion compensation circuit having a first distortion compensation characteristic for compensating for a first distortion occurring in an output of an amplifier, the first distortion compensation circuit being configured to compensate for the first distortion;
a second distortion compensation circuit having a second distortion compensation characteristic for compensating for a second distortion occurring in the output of the amplifier, the second distortion compensation circuit being configured to compensate for the second distortion; and
an update unit configured to update the second distortion compensation characteristic, wherein
the first distortion includes a non-linear distortion and a memory effect distortion,
the second distortion is a distortion whose temporal change is quicker than the first distortion, and
the update unit updates the second distortion compensation characteristic at a higher frequency than an update frequency of the first distortion compensation characteristic.
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