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A measurement-based error-vector-magnitude model to assess non linearity at the system level

Book Contribution - Book Chapter Conference Contribution

A measurement-based Error-Vector-Magnitude (EVM) extraction and modeling is proposed to obtain a least squares estimate of the EVM for a class of modulated excitation signals sharing a common probability density function (pdf) and Power Spectral Density (PSD). The method splits the influence of the linear dynamic and the nonlinear distortion on the EVM. The dependence of the EVM on the input signal power is hereby obtained. The influence of the measurement noise on the measured EVM is compensated, wrestling in a clear improvement of the measured quantity. The results are validated on measurements obtained by a Vector Signal Generator and Vector Signal Analyzer (VSG-VSA) measurement setup.
Book: 2017 IEEE MTT-S International Microwave Symposium, IMS 2017
Pages: 1429-1432
Number of pages: 4
Publication year:2017
Keywords:Frequency measurement, Distortion measurement, Noise measurement, Power measurement, Phase measurement, Nonlinear distortion
Authors:International
Accessibility:Closed