Unlimited sampling from theory to practice: fourier-prony recovery and prototype ADC
File(s)TSP-Submission Aug 2021.pdf (5.43 MB)
Accepted version
Author(s)
Bhandari, Ayush
Krahmer, Felix
Poskitt, Thomas
Type
Journal Article
Abstract
Following the Unlimited Sampling strategy to alleviate the omnipresent dynamic range barrier, we study the problem of recovering a bandlimited signal from point-wise modulo samples, aiming to connect theoretical guarantees with hardware implementation considerations. Our starting point is a class of non-idealities that we observe in prototyping an unlimited sampling based analog-to-digital converter. To address these non-idealities, we provide a new Fourier domain recovery algorithm. Our approach is validated both in theory and via extensive experiments on our prototype analog-to-digital converter, providing the first demonstration of unlimited sampling for data arising from real hardware, both for the current and previous approaches. Advantages of our algorithm include that it is agnostic to the modulo threshold and it can handle arbitrary folding times. We expect that the end-to-end realization studied in this paper will pave the path for exploring the unlimited sampling methodology in a number of real world applications.
Date Issued
2021-09-20
Date Acceptance
2021-08-18
Citation
IEEE Transactions on Signal Processing, 2021, 70, pp.1131-1141
ISSN
1053-587X
Publisher
Institute of Electrical and Electronics Engineers (IEEE)
Start Page
1131
End Page
1141
Journal / Book Title
IEEE Transactions on Signal Processing
Volume
70
Copyright Statement
© 2021 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.
Sponsor
UK Research and Innovation council
Identifier
https://ieeexplore.ieee.org/document/9540979
Grant Number
Future Leaders Fellowship
Subjects
Science & Technology
Technology
Engineering, Electrical & Electronic
Engineering
Hardware
Prototypes
Signal processing algorithms
Image reconstruction
Discrete Fourier transforms
Sensors
Dynamic range
Analog-to-digital
modulo
non-linear recon- struction
Shannon sampling
Prony's method
super-resolution
Networking & Telecommunications
Publication Status
Published
Date Publish Online
2021-09-20