NDLI: Quantization of compressed sensing measurements using Analysis-by-Synthesis with Bayesian-optimal Approximate Message Passing

Content Provider	IEEE Xplore Digital Library
Author	Musa, O. Goertz, N.
Copyright Year	2015
Description	Author affiliation: Inst. of Telecommun., Vienna Univ. of Technol., Vienna, Austria (Musa, O.; Goertz, N.)
Abstract	Compressed sensing allows for stable reconstruction of sparse source vectors from noisy, linear measurement vectors of much lower dimension than the source vectors. In many applications, low-bit rate quantization is unavoidable or even desired in further processing of the signal, and suitable algorithms need to be developed for minimizing negative effects on the recovered source signal due to the quantization of the measurements. We present an Analysis-by-Synthesis (AbS) quantization scheme in which, as a novelty, Bayesian-optimal Approximate Message Passing (BAMP) is used as a reconstruction algorithm. The focus is on source signals that can be modeled by a linear combination of a discrete component and a zero-mean Gaussian component; for those signals suitable estimation functions are given for use in the BAMP algorithm. We investigate different setups of the AbS scheme with BAMP and compare the results with an AbS scheme known from the literature, in which Orthogonal Matching Pursuit is used as the reconstruction algorithm.
Starting Page	510
Ending Page	514
File Size	649301
Page Count	5
File Format	PDF
e-ISBN	9781479919314
DOI	10.1109/SPAWC.2015.7227090
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-06-28
Publisher Place	Sweden
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Quantization (signal) Signal processing algorithms Noise measurement Approximation algorithms Noise Algorithm design and analysis Matching pursuit algorithms compressed sensing Bayesian-optimal Approximate Message Passing Analysis-by-Synthesis quantization
Content Type	Text
Learning Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Mr. Siddhartha Mukherjee siddhartha@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	ndl-support@iitkgp.ac.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Libarray of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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