One-bit sampling in fractional Fourier domain
File(s)OB_FrFT_CameraReady.pdf (995.15 KB)
Accepted version
Author(s)
Bhandari, Ayush
Graf, Olga
Krahmer, Felix
Zayed, Ahmed
Type
Conference Paper
Abstract
The fractional Fourier transform has found applications in a variety of topics linked with science and engineering. In this context, sampling theory is one of the most well-studied subjects. Since the fractional Fourier transform or the FrFT generalizes the notion of bandlimitedness, extension of Shannon's sampling theorem to the FrFT domain generalizes the classical result for the Fourier domain. These ideas have further been extended to the class of non-bandlimited functions via shift-invariant subspaces and sparse models. In this paper, we discuss a different approach to sampling theory in the FrFT domain. For the first time, we propose sampling and recovery of bandlimited functions in the FrFT domain that is based on one-bit samples. Our work is inspired by the Sigma-Delta quantization scheme. In particular, we capitalize on the idea of noise shaping and develop a one-bit sampling architecture that allows for recovery of bandlimited functions in the FrFT domain by pushing quantization noise to the higher frequencies. Since the FrFT generalizes the Fourier transform, our work results in a generalized Sigma-Delta architecture. We validate our theoretical concepts through computer experiments and provide an approximation theoretic error bound.
Date Issued
2020-04-09
Date Acceptance
2020-05-01
Citation
ICASSP 2020 - 2020 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2020, pp.9140-9144
ISSN
1520-6149
Publisher
IEEE
Start Page
9140
End Page
9144
Journal / Book Title
ICASSP 2020 - 2020 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)
Copyright Statement
Copyright © 2020 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:000615970409084&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=a2bf6146997ec60c407a63945d4e92bb
Source
IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP)
Subjects
Acoustics
Analog-to-digital conversion
approximation
BAND-LIMITED SIGNALS
Engineering
Engineering, Electrical & Electronic
EXPANSION
FAMILY
fractional Fourier transform
one-bit sampling
RECONSTRUCTION
Science & Technology
Shannon's sampling
SIGMA-DELTA QUANTIZATION
Technology
THEOREM
TRANSFORM
Publication Status
Published
Start Date
2020-05-04
Finish Date
2020-05-08
Coverage Spatial
Barcelona, Spain