High-order incremental sigma-delta for compressive sensing and its application to image sensors

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Abstract

ΣΔ ADCs show promising perspectives in the field of compressive sensing (CS). A major limitation related to the first-order ΣΔ is its high oversampling ratio (OSR) that is required for a specific bit resolution. An extension to the high-order incremental ΣΔ for the implementation of a dedicated image sensor is presented. By extending the concept of the ΣΔ CS ADC, optimal working points can be reached between the OSR and the compression ratio. Simulations of a particular fourth-order ADC combined with the authors column-based Bernoulli CS scheme show a severe relaxation on the ADC master clock.

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Guicquero, W., Verdant, A., & Dupret, A. (2015). High-order incremental sigma-delta for compressive sensing and its application to image sensors. Electronics Letters, 51(19), 1492–1494. https://doi.org/10.1049/el.2015.2233

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