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Accurate AM-FM signal demodulation and separation using nonparametric regularization method
Hu, Xiyuan1; Peng, Silong2; Guo, Baokui3; Xu, Pengcheng4
2021-09-01
Source PublicationSIGNAL PROCESSING
ISSN0165-1684
Volume186Pages:12
AbstractIn this paper we propose a novel adaptive nonparametric regularization (NPR) method for solving optimization problems with linear constraint. The regular parameter in NPR algorithm is adaptively updated. We prove that the NPR is convergent and provide an early stop method (ESM) with a termination criterion to handle the perturbation problem which is unsolved in other methods such as the augmented Lagrange method (ALM). We then introduce a new differential operator which can absolutely annihilate the amplitude-modulated and frequency-modulated (AM-FM) signals (AM-FM operator, AFO). The proposed operator is a precise operator and thus can obtain a more accurate solution in operator based signal demodulation and separation problems. We apply the NPR algorithm in signal demodulation and separation based on the AFO and propose signal demodulation (NPR-AFOSD) and separation (NPR-AFOSS) algorithms. The experimental results on both synthetic AM-FM signals and the real-life data demonstrate that the proposed demodulation and separation methods are more effective and robust than the state-ofthe-art methods. (C) 2021 Elsevier B.V. All rights reserved.
KeywordNonparametric regularization method AM-FM signal Null space pursuit (NSP) Differential equation Signal demodulation and separation
DOI10.1016/j.sigpro.2021.108131
Indexed BySCI
Language英语
Funding ProjectNatural Science Foundation of China[61571438]
WOS Research AreaEngineering
WOS SubjectEngineering, Electrical & Electronic
WOS IDWOS:000652606600009
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.amss.ac.cn/handle/2S8OKBNM/58720
Collection应用数学研究所
Corresponding AuthorPeng, Silong
Affiliation1.Nanjing Univ Sci & Technol, Sch Comp Sci & Engn, Nanjing 210094, Peoples R China
2.Chinese Acad Sci, Inst Automat, Beijing 100190, Peoples R China
3.Sogou Inc, Beijing 100084, Peoples R China
4.Chinese Acad Sci, Acad Math & Syst Sci, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Hu, Xiyuan,Peng, Silong,Guo, Baokui,et al. Accurate AM-FM signal demodulation and separation using nonparametric regularization method[J]. SIGNAL PROCESSING,2021,186:12.
APA Hu, Xiyuan,Peng, Silong,Guo, Baokui,&Xu, Pengcheng.(2021).Accurate AM-FM signal demodulation and separation using nonparametric regularization method.SIGNAL PROCESSING,186,12.
MLA Hu, Xiyuan,et al."Accurate AM-FM signal demodulation and separation using nonparametric regularization method".SIGNAL PROCESSING 186(2021):12.
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