A bit-constrained sar adc for compressive acquisition of frequency sparse signals

Andrew E. Waters; Charles K. Sestok IV; Richard G. Baraniuk

doi:10.1109/ICASSP.2012.6289120

A bit-constrained sar adc for compressive acquisition of frequency sparse signals

Andrew E. Waters, Charles K. Sestok IV, Richard G. Baraniuk

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

We introduce a novel analog-to-digital converter (ADC) based on the traditional successive approximation register. This architecture employs compressive sensing (CS) techniques to acquire and reconstruct frequency sparse signals. One important difference between our approach and traditional CS systems is that our architecture constrains the number of bits used during acquisition rather than the number of measurements. Our system is able to flexibly partition a fixed budget in order to trade the number of measurements it acquires with the quantization depth given to each measurement. We show that this degree of flexibility is particularly advantageous for ameliorating the CS noise folding phenomenon, allowing our ADC significant gains over measurement-constrained compressive sensing systems.

Original language	English (US)
Title of host publication	2012 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2012 - Proceedings
Pages	5313-5316
Number of pages	4
DOIs	https://doi.org/10.1109/ICASSP.2012.6289120
State	Published - Oct 23 2012
Event	2012 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2012 - Kyoto, Japan Duration: Mar 25 2012 → Mar 30 2012

Other

Other	2012 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2012
Country	Japan
City	Kyoto
Period	3/25/12 → 3/30/12

Keywords

analog-digital conversion
compressed sensing
nonuniform sampling

ASJC Scopus subject areas

Signal Processing
Software
Electrical and Electronic Engineering

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A bit-constrained sar adc for compressive acquisition of frequency sparse signals. / Waters, Andrew E.; Sestok IV, Charles K.; Baraniuk, Richard G.

2012 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2012 - Proceedings. 2012. p. 5313-5316 6289120.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Waters, AE, Sestok IV, CK & Baraniuk, RG 2012, A bit-constrained sar adc for compressive acquisition of frequency sparse signals. in 2012 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2012 - Proceedings., 6289120, pp. 5313-5316, 2012 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2012, Kyoto, Japan, 3/25/12. https://doi.org/10.1109/ICASSP.2012.6289120

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