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Signal Processing
Article
License: Elsevier Non-Commercial
Data sources: UnpayWall
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Signal Processing
Article . 2016 . Peer-reviewed
License: Elsevier TDM
Data sources: Crossref
DBLP
Article . 2016
Data sources: DBLP
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Adaptive one-bit quantization for compressed sensing

Authors: Jun Fang 0001; Yanning Shen; Linxiao Yang; Hongbin Li 0001;

Adaptive one-bit quantization for compressed sensing

Abstract

There have been a number of studies on sparse signal recovery from one-bit quantized measurements. Nevertheless, less attention has been paid to the choice of the quantization thresholds and its impact on the signal recovery performance. In this paper, we examine the problem of quantization in a general framework of one-bit compressed sensing with non-zero quantization thresholds. Our analysis shows that when the number of one-bit measurements is sufficiently large, with a high probability the sparse signal can be recovered with an error decaying linearly with the ?2-norm of the difference between the quantization thresholds and the original unquantized measurements. Specifically, by setting the thresholds sufficiently close to the original unquantized measurements, sparse signals can be recovered with an arbitrarily small error. By borrowing an idea from the Delta modulation, we propose an adaptive quantization scheme where the quantization thresholds are iteratively adjusted based on previous encoded bits such that they eventually oscillate around the original unquantized measurements with decreasing granular noise. Numerical results are provided to collaborate our theoretical results and to illustrate the effectiveness of the proposed scheme.

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    19
    popularity
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    influence
    This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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    This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
    Top 10%
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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
19
Top 10%
Top 10%
Top 10%
hybrid