Fast and Energy-Efficient Digital Filters for Signal Conditioning in Low-Power Microcontrollers

TitleFast and Energy-Efficient Digital Filters for Signal Conditioning in Low-Power Microcontrollers
Publication TypeConference Paper
Year of Publication2017
AuthorsMoreno, C., and S. Fischmeister
Conference NameDesign Automation and Test in Europe (DATE)
Conference LocationAustin, USA
Abstract

Embedded systems often use digital filtering after analogto-digital conversion when signal conditioning is required. However, digital filters are computationally demanding, making them unsuitable for low-power microcontrollers.

In this paper, we propose a fast and energy-efficient digital filtering technique based on look-up tables. The novelty in our technique is the use of multiple small LUTs, with a novel way to combine them to reduce the quantization error. As an additional novelty element, we propose a new inputcentric efficient implementation, specific to LUT-based software filters. Experimental results confirm the technique's remarkable potential for speed as well as its energy efficiency.

DOI10.1145/3061639.3062245
Refereed DesignationRefereed
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Opportunities

Looking for motivated students (undergrads and grads) interested in working on embedded software and systems research. Mail Sebastian Fischmeister for further information.