An Approach for Estimation of Nonlinear Distortion under Multitone Excitation
Meng Zhang · Dianzi qijian · 2009
For nonlinear distortion in radio frequency communication circuit, the nonlinear circuit was simplified as third-order memoryless nonlinear model in this paper. Using CCDF (Complementary Cumulative Distribution Function), the relationship between narrowband white Gaussian noise and multitone signals with different number of tones was discussed. By averaging different distortion powers using multitone with random phases, the accurate nonlinear distortion simulation and measurement methods with fewer tones were investigated. The error and fluctuation caused by fewer tones were reduced by this method.