Skip navigation
Please use this identifier to cite or link to this item:
Title: Pre-filtered Phase-Locking Scheme for Multi-component AM–FM Signal Decomposition
Authors: George A.K.
Sumathi, Parasuraman
Published in: Circuits, Systems, and Signal Processing
Abstract: An online multi-component AM–FM signal decomposition method is proposed based on pre-filtered phase-locking scheme. A second-order generalized integrator (SOGI) and cascaded delayed signal cancelation technique (CDSC) are employed as pre-filters for the phase-locking scheme (PLL). The CDSC technique separates the AM–FM signals from the multi-component signal as a mono-component AM–FM, and a PLL structure demodulates the instantaneous amplitude (IA) and instantaneous frequency (IF) from the individual AM–FM signals. The IF estimated from PLL is fed back to SOGI and CDSC blocks in order to adaptively adjust the number of samples. PLL structures are augmented in parallel to extract IA and IF of multi-component AM–FM signals. The proposed scheme is implemented in field programmable gate array and tested for sinusoidal multi-component AM–FM model. It is evident from the simulation and experimental investigation that the algorithm could efficiently track IF and IA and offers good dynamic response and operating range. © 2017, Springer Science+Business Media New York.
Citation: Circuits, Systems, and Signal Processing (2018), 37(2): 752-769
Issue Date: 2018
Publisher: Birkhauser Boston
Keywords: Delayed signal cancelation
Instantaneous amplitude
Instantaneous frequency
Multi-component AM–FM demodulation
Phase-locked loops
Signal decomposition
ISSN: 0278081X
Author Scopus IDs: 57188974736
Author Affiliations: George, A.K., Electrical Engineering Department, Indian Institute of Technology, Roorkee, 247667, India, Electrical and Computer Engineering Department, Wayne State University, Detroit, MI 48202, United States
Sumathi, P., Electrical Engineering Department, Indian Institute of Technology, Roorkee, 247667, India
Corresponding Author: George, A.K.; Electrical Engineering Department, Indian Institute of TechnologyIndia; email:
Appears in Collections:Journal Publications [EE]

Files in This Item:
There are no files associated with this item.
Show full item record

Items in Repository are protected by copyright, with all rights reserved, unless otherwise indicated.