| 摘要 |
A method for controlling power amplifiers for digital transmission includes converting a digital modulation signal according to envelope elimination and restoration into an amplitude signal and into a phase-modulated carrier signal. The amplitude signal and the phase-modulated carrier signal are combined in a final stage so as to provide a transmit signal. The amplitude signal is automatically monitored by a module that employs a distribution-density function of the amplitude signal in order to determine a direct component error of the amplitude signal. The distribution-density function of the amplitude signal corresponds to a Rayleigh function if the energy of the complex modulation signal is distributed approximately uniformly within a bandwidth being used. If the spectral power density has an approximately rectangular form, the Rayleigh function is used to determine the direct component error. The direct component error is determined from the amplitude signal.
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