| 摘要 |
PROBLEM TO BE SOLVED: To provide an OFDM (Orthogonal Frequency Division Multiplexing) modulator which can compensate distortion even in a case of high output. SOLUTION: The OFDM modulator is provided with an error extraction unit 32 which extracts an error between a base band signal according to an input signal and a feedback signal from an amplifier, an average sample selection unit 33 which extracts the error signal extracted by the error extraction unit 32 in each predetermined sample, an average calculation unit 34 which calculates an average value of the error signals extracted by the average sample selection unit 33, an interpolation calculation unit 35 which interpolates average values calculated in each predetermined sample, and a compensation data generation unit 36 which presumes the distortion based on the average values interpolated by the interpolation calculation unit 35, and generates data for distortion compensation from the distortion. COPYRIGHT: (C)2011,JPO&INPIT |
