Error in the calibration of the receive paths due to nonlinear distortion of the transmitter at a multi-frequency control signal

Abstract

Abstract Errors of amplitude calibration of the receive paths due to nonlinearities of the transmitter by simulation are considered. Calibration shall be carried out using a multi-frequency signal with elongated orthogonal subcarrier corresponding to the reference frequencies. Calibration is performed by evaluating the complex frequency response of the receiving path at control frequencies by dividing the samples of the output signal spectrum of the path by the corresponding samples of the input signal spectrum. To describe the terminal amplifier of a non-inertial transmitter, a polynomial model is used that takes into account the distortion of the amplitudes of the output signals.