NDLI: High-order ridge reconstruction for more accurate signal estimate from time-frequency representations

Content Provider	IET Digital Library
Author	Zhu, Xiangxiang Zhang, Zhuosheng Li, Wenting Li, Bei
Abstract	Ridge reconstruction (RR) method is one of the most commonly used ways for non-stationary signal reconstruction from time-frequency representations. However, this method leads to a large reconstruction error when dealing with strongly amplitude-modulated and frequency-modulated (AM–FM) signals. To tackle this problem, in this Letter the authors propose a new and powerful reconstruction approach, named high-order RR, by considering the high-order derivative information of amplitude and phase of the signal. In particular, an explicit reconstruction formula for second-order RR is derived. Simulation results demonstrate the superiority of the proposed approach in reconstruction accuracy when addressing AM–FM signals, as well as the stability for the selection of window width.
Starting Page	763
Ending Page	765
Page Count	3
ISSN	00135194
Volume Number	55
e-ISSN	1350911X
Issue Number	Issue 13, Jun (2019)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/el/55/13
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/el.2019.0340
Journal	Electronics Letters
Publisher Date	2019-05-23
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Accurate Signal Estimate Addressing AM–FM Signals Amplitude Modulation Amplitude-modulated Frequency-modulated Commonly Used Ways Computer Vision And Image Processing Technique Explicit Reconstruction Formula Frequency Modulation High-order Derivative Information High-order Ridge Reconstruction Image Reconstruction Interpolation And Function Approximation Mathematical Analysis Named High-order RR New Reconstruction Approach Nonstationary Signal Reconstruction Numerical Analysis Optical, Image And Video Signal Processing Phase Powerful Reconstruction Approach Reconstruction Accuracy Reconstruction Error Ridge Reconstruction Method Second-order RR Signal Processing And Detection Signal Processing Theory Signal Reconstruction Time-frequency Analysis Time-frequency Representations
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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