Results 231 to 240 of about 19,817 (256)

Frequency-comb enabled spectrum-correlation reflectometry for distributed fiber-optic sensing. [PDF]

Light Sci Appl
Lin Z, Zhao Z, He H, Chen C, Tang M, Soto MA.   +5 more
europepmc   +1 more source

Ti₃C₂-Mxene-dispersion and morphology controlled battery-type nickel cobalt sulphide based nanocomposites for the application as aqueous asymmetric supercapacitor with improved rate. [PDF]

Discov Nano
Das A, Samanta Roy Choudhury A, Bhattacharya P.   +2 more
europepmc   +1 more source

Synergistic Cu-Sb oxide electrocatalyst synthesized by sol-gel method for high-efficiency nitrate reduction to ammonia with suppressed hydrogen evolution. [PDF]

Sci Rep
Babaei A, Rezaei M, Marashi P, Rainforth WM.   +3 more
europepmc   +1 more source

Surface and Interface Modulation of V₂O₅/Ni(OH)₂ Nanomaterials for Enhanced Alkaline Water Splitting. [PDF]

Molecules
Feng J, Yu Y, Zhang Y, Sun H, Wang X, Song S, Li Y, Wang J, Zhao D, Hu F.   +9 more
europepmc   +1 more source

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Sub-NYQUIST Multichannel Blind Deconvolution

ICASSP 2021 - 2021 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2021
We consider a continuous-time sparse multichannel blind deconvolution problem. The signal at each channel is expressed as the convolution of a common source signal and its impulse response given as a sparse filter. The objective is to identify these sparse filters from sub-Nyquist samples of channel outputs by leveraging the correlation across channels.
Satish Mulleti, Kiryung Lee, Yonina C. Eldar   +2 more
openaire   +1 more source

Sub-Nyquist Sampling

IEEE Signal Processing Magazine, 2011
In this article, we review sampling strategies that target reduction of the ADC rate below Nyquist. Our survey covers classic works from the early 1950s through recent publications from the past several years. The prime focus is bridging theory and practice, that is, to pinpoint the potential of sub-Nyquist strategies to emerge from the math to the ...
Moshe Mishali, Yonina Eldar
openaire   +1 more source

Compressive sensing and sub-Nyquist sampling

IEEE Instrumentation & Measurement Magazine, 2020
The Nyquist-Shannon sampling theorem states that if all that you know about a signal is that its highest frequency is no greater than B, then if you want to sample the signal without any loss of information, you must sample it at a rate that is greater than 2B.
Roi Arie, Avraham Brand, Shlomo Engelberg   +2 more
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Sub-Nyquist sampling with independent measurements

Signal Processing, 2020
Abstract This paper presents an efficient sub-Nyquist pulse-Doppler radar system via quadrature compressive sampling (QuadCS) in fast-time domain. QuadCS is a bandpass variant of random demodulation and inserts randomness into the measurement matrix by employing a random chipping signal.
Shengyao Chen, Zhiyong Cheng, Huizhang Yang, Feng Xi, Zhong Liu   +4 more
openaire   +1 more source

Sub-Nyquist Interferometry

Workshop on Optical Fabrication and Testing, 1986
The primary limitation of conventional phase-shifting or heterodyne interferometry (PSI) is its inability to measure the profile of surfaces or wavefronts with large departures from a best-fit reference sphere. The surface must have limited asphericity.
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Data-assisted sub-Nyquist spectrum sensing

2016 IEEE International Conference on Communication Systems (ICCS), 2016
Spectrum sensing is the first step to realize dynamic spectrum sharing. Geo-location database can enable white space devices (WSDs) to make use of the vacant spectrum without harmfully interfering with incumbent services. Dynamic changes of the wireless environment pose significant challenges to the database approach.
Yue Gao, Yuan Ma, Wei Zhang, Rafael Cepeda   +3 more
openaire   +1 more source