Complex Correntropy Applied to a Compressive Sensing Problem in an Impulsive Noise Environment

Correntropy is a similarity function capable of extracting high-order statistical information from data. It has been used in different kinds of applications as a cost function to overcome traditional methods in non-Gaussian noise environments. One of the recent applications of correntropy was in the...

Full description

Bibliographic Details
Main Authors: Joao P. F. Guimaraes, Felipe B. Da Silva, Aluisio I. R. Fontes, Ricardo Von Borries, Allan De M. Martins
Format: Article
Language:English
Published: IEEE 2019-01-01
Series:IEEE Access
Subjects:
Online Access:https://ieeexplore.ieee.org/document/8871128/
Description
Summary:Correntropy is a similarity function capable of extracting high-order statistical information from data. It has been used in different kinds of applications as a cost function to overcome traditional methods in non-Gaussian noise environments. One of the recent applications of correntropy was in the theory of compressive sensing, which takes advantage of sparsity in a transformed domain to reconstruct the signal from a few measurements. Recently, an algorithm called &#x2113;<sub>0</sub>-MCC was introduced. It applies the Maximum Correntropy Criterion (MCC) in order to deal with a non-Gaussian noise environment in a compressive sensing problem. However, because correntropy was only defined for real-valued data, it was not possible to apply the &#x2113;<sub>0</sub>-MCC algorithm in a straightforward way to compressive sensing problems dealing with complex-valued measurements. This paper presents a generalization of the &#x2113;<sub>0</sub>-MCC algorithm to complex-valued measurements. Simulations show that the proposed algorithm can outperform traditional minimization algorithms such as Nesterov's algorithm (NESTA) and the &#x2113;<sub>0</sub>-Least Mean Square (&#x2113;<sub>0</sub>-LMS) in the presence of non-Gaussian noise.
ISSN:2169-3536