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Journal Articles Signal Processing Year : 2020

On the sensitivity of third-order Volterra MVDR beamformers to interference-pulse shaping filter

Abstract

Linear beamformers are optimal, in a mean square (MS) sense, when the signal of interest (SOI) and observations are jointly Gaussian and circular. Otherwise, optimal beamformers become non-linear with a structure depending on the unknown joint probability distribution of the SOI and observations. In this context, third-order Volterra minimum variance distortionless response (MVDR) beamformers have been proposed recently to improve the performance of linear beamformers in the presence of non-Gaussian and potentially non-circular interference, omnipresent in practical situations. High performance gains have been obtained for binary phase shift keying (BPSK) and quadrature phase shift keying (QPSK) interference having a square pulse shaping filter in particular. However in practice, for spectral efficiency reasons, most of signals use non-square pulse shaping filters, such as square root raised cosine filter. It is then important to analyze the sensitivity of third-order MVDR beamformers to interference pulse shaping filter, which is the purpose of this paper.
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Dates and versions

hal-02461523 , version 1 (30-01-2020)
hal-02461523 , version 2 (03-02-2020)

Identifiers

Cite

Jean-Pierre Delmas, Pascal Chevalier, Mustapha Sadok. On the sensitivity of third-order Volterra MVDR beamformers to interference-pulse shaping filter. Signal Processing, 2020, 170, pp.107424-1:107424-7. ⟨10.1016/j.sigpro.2019.107424⟩. ⟨hal-02461523v2⟩
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