Accurate AM-FM signal demodulation and separation using nonparametric regularization method

doi:10.1016/j.sigpro.2021.108131

	Accurate AM-FM signal demodulation and separation using nonparametric regularization method
	Hu, Xiyuan 4; Peng, Silong 3; Guo, Baokui 2; Xu, Pengcheng 1
刊名	SIGNAL PROCESSING
	2021-09-01
卷号	186 页码:12
关键词	Nonparametric regularization method AM-FM signal Null space pursuit (NSP) Differential equation Signal demodulation and separation
ISSN号	0165-1684
DOI	10.1016/j.sigpro.2021.108131
英文摘要	In 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.
资助项目	Natural Science Foundation of China[61571438]
WOS研究方向	Engineering
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000652606600009
内容类型	期刊论文
源URL	[http://ir.amss.ac.cn/handle/2S8OKBNM/58719]
专题	中国科学院数学与系统科学研究院
通讯作者	Peng, Silong
作者单位	1.Chinese Acad Sci, Acad Math & Syst Sci, Beijing 100190, Peoples R China 2.Sogou Inc, Beijing 100084, Peoples R China 3.Chinese Acad Sci, Inst Automat, Beijing 100190, Peoples R China 4.Nanjing Univ Sci & Technol, Sch Comp Sci & Engn, Nanjing 210094, Peoples R China
推荐引用方式 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.