A digital reception apparatus includes a receiver that processes a
received signal and a distortion corrector that corrects a non-linear
distortion of the processed received signal, introduced by the receiver.
The receiver may include an amplifier, a quadrature demodulator and/or a
quantizer. The distortion corrector includes a distortion estimator that
estimates the distortion and outputs a correcting signal based on an
inverse distortion characteristic of the receiver, and a distortion
compensator that multiplies the received signal and the correcting signal
to remove the non-linear distortion from the received signal, to obtain a
corrected received signal. The corrected signal is output to a
demodulator, which performs demodulation processing on the corrected
signal, and thereby obtains a demodulated signal.