| 摘要 |
PROBLEM TO BE SOLVED: To provide a predistorter, a predistortion method and a predistortion system. SOLUTION: The predistorter includes: a modulus value determining section for determining a modulus value of an input signal; a base searching section for searching a prescribed base lookup table in accordance with the modulus value of the input signal to obtain a base lookup table value; an offset searching section for searching a prescribed offset lookup table in accordance with the modulus value of the input signal to obtain an offset lookup table value; an interpolation factor generating section for generating an interpolation factor in accordance with the modulus value of the input signal; a multiplying section for multiplying the offset lookup table value by the interpolation factor; and a summating section for adding a product obtained by the multiplying section to the base lookup table value to obtain a predistortion value. COPYRIGHT: (C)2011,JPO&INPIT |
