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Discontinuity preserving method for noise removal of multi-carrier signals

Discontinuity preserving method for noise removal of multi-carrier signals
Discontinuity preserving method for noise removal of multi-carrier signals
A nonlinear method based on anisotropic diffusion notion is proposed in this paper to remove noise from noisy signals modulated with multiple carrier signals by preserving carrier signals as well as discontinuities present in the original noiseless signals. Gaussian and correlated noise contaminating signals with up to four carriers are considered here. Our algorithm proposed here is implemented with both explicit and semi-implicit discretization schemes. Experiments presented here demonstrate promising results indicating a better performance for our nonlinear noise removal method in comparison with the state-of- art in the literature.
anisotropic diffusion, noise removal, signal discontinuity, multi-carrier signals, discontinuity preserving
0165-1684
8-19
Mahmoodi, Sasan
91ca8da4-95dc-4c1e-ac0e-f2c08d6ac7cf
Mahmoodi, Sasan
91ca8da4-95dc-4c1e-ac0e-f2c08d6ac7cf

Mahmoodi, Sasan (2017) Discontinuity preserving method for noise removal of multi-carrier signals. Signal Processing, 131, 8-19. (doi:10.1016/j.sigpro.2016.07.017).

Record type: Article

Abstract

A nonlinear method based on anisotropic diffusion notion is proposed in this paper to remove noise from noisy signals modulated with multiple carrier signals by preserving carrier signals as well as discontinuities present in the original noiseless signals. Gaussian and correlated noise contaminating signals with up to four carriers are considered here. Our algorithm proposed here is implemented with both explicit and semi-implicit discretization schemes. Experiments presented here demonstrate promising results indicating a better performance for our nonlinear noise removal method in comparison with the state-of- art in the literature.

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Submitted date: 31 March 2015
Accepted/In Press date: 15 July 2016
e-pub ahead of print date: 25 July 2016
Published date: 1 February 2017
Keywords: anisotropic diffusion, noise removal, signal discontinuity, multi-carrier signals, discontinuity preserving
Organisations: Vision, Learning and Control

Identifiers

Local EPrints ID: 398178
URI: http://eprints.soton.ac.uk/id/eprint/398178
ISSN: 0165-1684
PURE UUID: f000b160-fec9-4b3d-8e99-51265496b582

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Date deposited: 20 Jul 2016 12:51
Last modified: 07 Oct 2020 06:23

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Contributors

Author: Sasan Mahmoodi

University divisions

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