Data-Driven Sampling Matrix Boolean Optimization for Energy-Efficient Biomedical Signal Acquisition by Compressive Sensing.

Published

Journal Article

Compressive sensing is widely used in biomedical applications, and the sampling matrix plays a critical role on both quality and power consumption of signal acquisition. It projects a high-dimensional vector of data into a low-dimensional subspace by matrix-vector multiplication. An optimal sampling matrix can ensure accurate data reconstruction and/or high compression ratio. Most existing optimization methods can only produce real-valued embedding matrices that result in large energy consumption during data acquisition. In this paper, we propose an efficient method that finds an optimal Boolean sampling matrix in order to reduce the energy consumption. Compared to random Boolean embedding, our data-driven Boolean sampling matrix can improve the image recovery quality by 9 dB. Moreover, in terms of sampling hardware complexity, it reduces the energy consumption by 4.6× and the silicon area by 1.9× over the data-driven real-valued embedding.

Full Text

Duke Authors

Cited Authors

  • Wang, Y; Li, X; Xu, K; Ren, F; Yu, H

Published Date

  • April 2017

Published In

Volume / Issue

  • 11 / 2

Start / End Page

  • 255 - 266

PubMed ID

  • 28113954

Pubmed Central ID

  • 28113954

Electronic International Standard Serial Number (EISSN)

  • 1940-9990

International Standard Serial Number (ISSN)

  • 1932-4545

Digital Object Identifier (DOI)

  • 10.1109/tbcas.2016.2597310

Language

  • eng