Patent ID: 9172333
Filing Date: 2015-10-27
Classification: H03F

Abstract:
1. A distortion compensation device comprising: a storage unit that stores therein a distortion compensation coefficient for compensating distortion generated in an amplifier for amplifying an input signal so as to correspond to a combination of two addresses; an address generator that generates a first address for acquiring the distortion compensation coefficient from the storage unit based on a power value of a current signal at a current time and generates a second address different from the first address, every time a first augend is input, based on a sum of the power value of the current signal at the current time and an augend, the sum being obtained by delaying the sum by a certain time and calculating a second augend that is smaller than the delayed sum delayed by the certain time, from the delayed sum; and a distortion compensation processor that acquires a distortion compensation coefficient corresponding to a combination of the first address and the second address from the storage unit and performs distortion compensation processing on the current signal that is input to the amplifier by using the acquired distortion compensation coefficient.