Patent ID: 9590827
Date: 2017-03-07
CPC Classifications: H03F,H04L

Claim:
1. A distortion compensation apparatus comprising: an amplifier configured to amplify an input signal including a transmission signal and an impulse signal, the transmission signal being converted to a radio frequency signal for transmission, the impulse signal being not converted to a radio signal for transmission, the impulse signal being generated so as to have a predetermined amplitude; a memory configured to store a plurality of distortion compensation coefficients for compensating distortion to the input signal, each of the plurality of distortion compensation coefficients being associated with an amplitude of the input signal; and a processor configured to select a distortion compensation coefficient from the plurality of distortion compensation coefficients based on an address corresponding to the predetermined amplitude of the impulse signal included in the input signal, the address corresponding to the predetermined amplitude of the impulse signal being generated when the impulse signal is generated, and update the selected distortion compensation coefficient based on the amplified impulse signal include in the amplified input signal.