| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a digital predistorter accurately suppressing a nonlinear distortion component, a signal processing method, a program, and a recording medium. Ž<P>SOLUTION: This digital predistorter compensates a nonlinear distortion component of a signal generated in a power amplifier constituting a communication system, and includes: an exponentiation means to exponentiate an input signal; a digital filter means connected in series to the exponentiation means; and a filter coefficient control means to adaptively control a reference signal to come close to a desired signal by controlling a filter coefficient of the digital filter means by adaptive signal processing based on a predetermined numerical expression without including a characteristic of the power amplifier. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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