Modulo event-driven sampling: system identification and hardware experiments
File(s)Dorian_Florescu_ICL.pdf (1.42 MB)
Accepted version
Author(s)
Florescu, Dorian
Bhandari, Ayush
Type
Conference Paper
Abstract
In event-driven sampling (EDS) the signal is represented in terms of a series of spikes at non-uniform time locations. Owing to the limited dynamic range (DR), just like how conventional analog-to-digital converters (ADC) suffer from signal saturation, in EDS a similar manifestation is observed. Namely, when the input exceeds a threshold, no output spikes are generated. Recently, the Unlimited Sensing Framework (USF) was presented to overcome the DR limitation. In USF, the key idea is to fold the signal using a modulo non-linearity so that its DR is fixed. Subsequently, we combined EDS with USF leading to a new architecture called Modulo Event-Driven Sampling (MEDS), where a modulo signal is input to the EDS model. The goal of this work is to bridge the gap between theory and practice for a MEDS model. Our hardware experiments suggest that for the MEDS approach to work, there are system parameters that must be identified beforehand so that accurate reconstruction of the input is possible. To this end, we introduce a system identification methodology for MEDS that is backed by theoretical guarantees. Using synthetic and experimental data, we validate the performance of our approach, thus demonstrating the utility of system identification.
Date Issued
2022-04-27
Date Acceptance
2022-05-01
Citation
ICASSP 2022 - 2022 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2022, pp.5747-5751
ISSN
1520-6149
Publisher
IEEE
Start Page
5747
End Page
5751
Journal / Book Title
ICASSP 2022 - 2022 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)
Copyright Statement
Copyright © 2022 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Identifier
https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000864187906009&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=a2bf6146997ec60c407a63945d4e92bb
Source
47th IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)
Subjects
Acoustics
Analog-to-digital converter (ADC)
Computer Science
Computer Science, Artificial Intelligence
Engineering
Engineering, Electrical & Electronic
FRAMEWORK
modulo samples
sampling theory
Science & Technology
SIGNALS
system identification
Technology
TIME
time encoding
Publication Status
Published
Start Date
2022-05-22
Finish Date
2022-05-27
Coverage Spatial
Singapore