A prototype hardware for random demodulation based compressive analog-to-digital conversion

Tamer Ragheb, Jason N. Laska, Hamid Nejati, Sami Kirolos, Richard G. Baraniuk, Yehia Massoud

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

56 Scopus citations

Abstract

In this paper, we utilize recent advances in compressive sensing theory to enable signal acquisition beyond Nyquist sampling constraints. We successfully recover signals sampled at sub-Nyquist sampling rates by exploiting additional structure other than bandlimitedness. We present a working prototype of compressive analog-to-digital converter (CADC) based on a random demodulation architecture. The architecture is particularly suitable for wideband signals that are sparse in the time-frequency plane. CADC has the advantage of enhancing the performance of communication and multimedia systems by increasing the transmission rate for the same bandwidth. We report successful reconstruction of AM modulated signals at sampling rates down to 1/8 of the Nyquist-rate, which represents an up to 87.5% savings in the bandwidth and the storage memory.

Original languageEnglish (US)
Title of host publication2008 IEEE International 51st Midwest Symposium on Circuits and Systems, MWSCAS
Pages37-40
Number of pages4
DOIs
StatePublished - Oct 27 2008
Event2008 IEEE International 51st Midwest Symposium on Circuits and Systems, MWSCAS - Knoxville, TN, United States
Duration: Aug 10 2008Aug 13 2008

Other

Other2008 IEEE International 51st Midwest Symposium on Circuits and Systems, MWSCAS
CountryUnited States
CityKnoxville, TN
Period8/10/088/13/08

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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