Analyse comparative des codes de mélange du convertisseur comprimé MWC

Abstract : The Modulated Wideband Converter (MWC) is a promising compressive sensing architecture for the sub-Nyquist sampling of analog multiband signals. Its bottleneck are the pseudorandom code sequences yielding the sensing matrix. Our contribution is a study of the influence of code families and of row selection based on different criteria. First the coherence, vital to limit the number of parallel branches, is investigated. Additionally, an approach that focuses on evaluating isometric properties, essential to noise robustness, is established. Third, the relevance of previous high-level metrics is validated thanks to a simulation platform. The study highlights the interest of circulant Zadoff-Chu codes.
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Submitted on : Friday, December 15, 2017 - 10:58:16 AM
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Marguerite Marnat, Michael Pelissier, Olivier Michel, Laurent Ros. Analyse comparative des codes de mélange du convertisseur comprimé MWC. XXVIème colloque GRETSI (GRETSI 2017), Sep 2017, Juan-Les-Pins, France. ⟨hal-01664780⟩



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