Low-Power Fixed-Point Compressed Sensing Decoder with Support Oracle

Approaches for reconstructing signals encoded with Compressed Sensing (CS) techniques, and based on Deep Neural Networks (DNNs) are receiving increasing interest in the literature. In a recent work, a new DNN-based method named Trained CS with Support Oracle (TCSSO) is introduced, relying the signal...

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Bibliographic Details
Main Authors: Prono, Luciano, Mangia, Mauro, Marchioni, Alex, Pareschi, Fabio, Rovatti, Riccardo, Setti, Gianluca
Format: Conference Proceeding
Language:English
Subjects:
Compressed sensing
Decoding
Electrocardiography
Image reconstruction
Sensors
Task analysis
Training
Online Access:Request full text
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Summary:Approaches for reconstructing signals encoded with Compressed Sensing (CS) techniques, and based on Deep Neural Networks (DNNs) are receiving increasing interest in the literature. In a recent work, a new DNN-based method named Trained CS with Support Oracle (TCSSO) is introduced, relying the signal reconstruction on the two separate tasks of support identification and measurements decoding. The aim of this paper is to improve the TCSSO framework by considering actual implementations using a finite-precision hardware. Solutions with low memory footprint and low computation requirements by employing fixed-point notation and by reducing the number of bits employed are considered. Results using synthetic electrocardiogram (ECG) signals as a case study show that this approach, even when used in a constrained-resources scenario, still outperform current state-of-art CS approaches.
ISSN:2158-1525
2158-1525
DOI:10.1109/ISCAS45731.2020.9180502