Augmented EMD for complex-valued univariate signals

In this study, the authors propose an efficient extension of the standard empirical mode decomposition (EMD) for complex-valued univariate signal decomposition. The key idea of the extension is to convert a complex-valued univariate signal into a longer real-valued signal by augmenting the real part...

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Main Authors: Oh, Beom-Seok, Zhuang, Huiping, Toh, Kar-Ann, Lin, Zhiping
Other Authors: School of Electrical and Electronic Engineering
Format: Article
Language:English
Published: 2020
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Online Access:https://hdl.handle.net/10356/144639
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1446392020-11-16T09:13:14Z Augmented EMD for complex-valued univariate signals Oh, Beom-Seok Zhuang, Huiping Toh, Kar-Ann Lin, Zhiping School of Electrical and Electronic Engineering Engineering::Electrical and electronic engineering Doppler Radar Feature Extraction In this study, the authors propose an efficient extension of the standard empirical mode decomposition (EMD) for complex-valued univariate signal decomposition. The key idea of the extension is to convert a complex-valued univariate signal into a longer real-valued signal by augmenting the real part with the flipped imaginary part, and then to decompose it into intrinsic mode functions (IMFs) using the EMD once only. The bivariate IMFs are then retrieved from the obtained IMFs. Their empirical results on synthetic data show that the proposed method significantly outperforms the traditional bivariate EMD (BEMD) method in terms of computational efficiency while producing a comparable extraction error. Moreover, the proposed method shows better micro-Doppler signature analysis performance on physically measured continuous-wave radar data than that of the BEMD. Accepted version 2020-11-16T09:13:13Z 2020-11-16T09:13:13Z 2019 Journal Article Oh, B.-S., Zhuang, H., Toh, K.-A., & Lin, Z. (2019). Augmented EMD for complex-valued univariate signals. IET Signal Processing, 13(4), 424-433. doi:10.1049/iet-spr.2018.5428 1751-9675 https://hdl.handle.net/10356/144639 10.1049/iet-spr.2018.5428 4 13 424 433 en IET Signal Processing This paper is a postprint of a paper submitted to and accepted for publication in IET Signal Processing and is subject to Institution of Engineering and Technology Copyright. The copy of record is available at IET Digital Library. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering::Electrical and electronic engineering
Doppler Radar
Feature Extraction
spellingShingle Engineering::Electrical and electronic engineering
Doppler Radar
Feature Extraction
Oh, Beom-Seok
Zhuang, Huiping
Toh, Kar-Ann
Lin, Zhiping
Augmented EMD for complex-valued univariate signals
description In this study, the authors propose an efficient extension of the standard empirical mode decomposition (EMD) for complex-valued univariate signal decomposition. The key idea of the extension is to convert a complex-valued univariate signal into a longer real-valued signal by augmenting the real part with the flipped imaginary part, and then to decompose it into intrinsic mode functions (IMFs) using the EMD once only. The bivariate IMFs are then retrieved from the obtained IMFs. Their empirical results on synthetic data show that the proposed method significantly outperforms the traditional bivariate EMD (BEMD) method in terms of computational efficiency while producing a comparable extraction error. Moreover, the proposed method shows better micro-Doppler signature analysis performance on physically measured continuous-wave radar data than that of the BEMD.
author2 School of Electrical and Electronic Engineering
author_facet School of Electrical and Electronic Engineering
Oh, Beom-Seok
Zhuang, Huiping
Toh, Kar-Ann
Lin, Zhiping
format Article
author Oh, Beom-Seok
Zhuang, Huiping
Toh, Kar-Ann
Lin, Zhiping
author_sort Oh, Beom-Seok
title Augmented EMD for complex-valued univariate signals
title_short Augmented EMD for complex-valued univariate signals
title_full Augmented EMD for complex-valued univariate signals
title_fullStr Augmented EMD for complex-valued univariate signals
title_full_unstemmed Augmented EMD for complex-valued univariate signals
title_sort augmented emd for complex-valued univariate signals
publishDate 2020
url https://hdl.handle.net/10356/144639
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