Accurate and efficient modeling of random demodulation based compressive sensing systems with a general filter

Sami Smaili, Yehia Massoud

Research output: Chapter in Book/Report/Conference proceedingConference contribution

11 Scopus citations

Abstract

Random demodulation provides a hardware-compact architecture for realizing compressive sensing systems. A random demodulator is realized by a mixer, with a random signal as the oscillator, and a low pass filter. In order to recover the original signal from the compressive sensing measurements, accurate modeling of the hardware components is needed. Typically, the reconstruction model assumes the low pass filter to be an ideal integrator. While this assumption is valid at low frequencies, it poses tremendous challenges at frequencies higher than 50MHz. In this paper, we provide an accurate and efficient model for the random demodulator that takes into account the actual structure of the filter. Using our model at reconstruction allows random demodulation for bandwidths extending to the GHz range, while, as we demonstrate, assuming an ideal integrator at reconstruction severely limits the system bandwidth. © 2014 IEEE.
Original languageEnglish (US)
Title of host publicationProceedings - IEEE International Symposium on Circuits and Systems
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages2519-2522
Number of pages4
ISBN (Print)9781479934324
DOIs
StatePublished - Jan 1 2014
Externally publishedYes

Bibliographical note

Generated from Scopus record by KAUST IRTS on 2022-09-13

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