A universal formula for the complete bandpass sampling requirements of nonlinear systems
IEEE Transactions on Signal Processing
Identification of nonlinear systems driven by random multisine signals
SIP '07 Proceedings of the Ninth IASTED International Conference on Signal and Image Processing
Test bed for characterization and predistortion of power amplifiers
International Journal of RF and Microwave Computer-Aided Engineering
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Nonlinear systems usually cause spectral spreading resulting in an output signal bandwidth greater than that of the input signal. When identifying and compensating nonlinear systems by digital methods, it has been common practice to set the sampling frequency at the Nyquist rate of the output signal. This correspondence presents experimental evidence for the author's proposal that nonlinear systems can be identified and compensated at the lowest possible sampling rate: the Nyquist rate of the input signal