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Efficient linear time-varying system identification using chirp waveforms

Publication ,  Conference
Harms, A; Bajwa, W; Calderbank, R
Published in: Conference Record - Asilomar Conference on Signals, Systems and Computers
April 24, 2015

Linear, time-varying (LTV) systems are operators composed of time shifts, frequency shifts, and complex amplitude scalings that act on continuous finite-energy waveforms. This paper builds upon a novel, resource-efficient method previously proposed by the authors for identifying the parametric description of such systems from the sampled response to linear frequency modulated (LFM) waveforms. If the LTV operator is probed with a sufficiently diverse set of LFM pulses, more LFM pulses than reflectors, then the system can be identified with high accuracy. The accuracy is shown to be proportional to the uncertainty in the estimated frequencies and confirmed with numerical experiments.

Duke Scholars

Published In

Conference Record - Asilomar Conference on Signals, Systems and Computers

DOI

ISSN

1058-6393

ISBN

9781479982974

Publication Date

April 24, 2015

Volume

2015-April

Start / End Page

854 / 858
 

Citation

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Harms, A., Bajwa, W., & Calderbank, R. (2015). Efficient linear time-varying system identification using chirp waveforms. In Conference Record - Asilomar Conference on Signals, Systems and Computers (Vol. 2015-April, pp. 854–858). https://doi.org/10.1109/ACSSC.2014.7094572
Harms, A., W. Bajwa, and R. Calderbank. “Efficient linear time-varying system identification using chirp waveforms.” In Conference Record - Asilomar Conference on Signals, Systems and Computers, 2015-April:854–58, 2015. https://doi.org/10.1109/ACSSC.2014.7094572.
Harms A, Bajwa W, Calderbank R. Efficient linear time-varying system identification using chirp waveforms. In: Conference Record - Asilomar Conference on Signals, Systems and Computers. 2015. p. 854–8.
Harms, A., et al. “Efficient linear time-varying system identification using chirp waveforms.” Conference Record - Asilomar Conference on Signals, Systems and Computers, vol. 2015-April, 2015, pp. 854–58. Scopus, doi:10.1109/ACSSC.2014.7094572.
Harms A, Bajwa W, Calderbank R. Efficient linear time-varying system identification using chirp waveforms. Conference Record - Asilomar Conference on Signals, Systems and Computers. 2015. p. 854–858.

Published In

Conference Record - Asilomar Conference on Signals, Systems and Computers

DOI

ISSN

1058-6393

ISBN

9781479982974

Publication Date

April 24, 2015

Volume

2015-April

Start / End Page

854 / 858