Nonlinear Distortion Identification based on Intra-wave Frequency Modulation

Authors

Yutian Wang, Information Engineering School, Communication University of China, Beijing 100024, ChinaFollow
Hui Wang
Qin Zhang

Author Country (or Countries)

China

Abstract

Recently, most of the methods used to measure and analysis signal property are based on the linear transform theory, such as FFT, STFT, wavelet, etc. Unfortunately, these methods usually cause meaningless results when it is used to analysis nonlinear signal. In this paper, we use Hilbert-Huang transform (HHT) to review the nonlinear distortion and define a novel nonlinear parameter named Nonlinear Distortion Degree (NDD) which is based on intra-wave frequency modulation measurement. The loudspeaker model simulations are used to illustrate the intra-wave frequency modulation caused by nonlinear distortion. The results agree that NDD can reveal more accurate and physical meaningful nonlinear distortion characteristic.

Suggested Reviewers

N/A

Recommended Citation

Wang, Yutian; Wang, Hui; and Zhang, Qin (2012) "Nonlinear Distortion Identification based on Intra-wave Frequency Modulation," Applied Mathematics & Information Sciences: Vol. 06: Iss. 3, Article 40.
Available at: https://digitalcommons.aaru.edu.jo/amis/vol06/iss3/40