| 摘要 |
PROBLEM TO BE SOLVED: To provide an adaptive digital predistortion device and method which can obtain satisfactory performance within an acceptable convergence time.SOLUTION: The adaptive digital predistortion device includes: a predistortion unit for predistorting an input signal according to predistortion parameters stored in a look-up table; a cost function generation unit for generating a cost function; a fixed segment point determination unit for determining a fixed segment point; and an update unit for updating parameters according to the cost function to update the look-up table based on the updated parameters, and for subsequently updating parameters according to the cost function to update the look-up table based on the updated parameters and the fixed segment point. |
