| 摘要 |
PROBLEM TO BE SOLVED: To reduce a storage capacitor for storing coefficients required for calculations for distortion compensation and execute precise distortion compensation.SOLUTION: A distortion compensation device 100 compensates for a distortion of an output signal to be output from a predetermined circuit by pre-distortion which multiplies an input signal by a coefficient beforehand. A first multiplication section 200c of the distortion compensation device 100 multiplies the input signal by a compensation coefficient selected in accordance with the input signal from candidates for the compensation coefficient, second multiplication sections 201c-201cmultiply delayed signals of the input signal by tap coefficients. An addition section 202 adds up the input signal multiplied by the compensation coefficient and the delayed signals multiplied by the tap coefficients to output a resultant signal to the predetermined circuit. |
