Results 31 to 40 of about 241,566 (298)

Optical signal processing via two-photon absorption in a semiconductor microcavity for the next generation of high-speed optical communications network [PDF]

open access: yes, 2006
Due to the introduction of new broadband services, individual line data rates are expected to exceed 100 Gb/s in the near future. To operate at these high speeds, new optical signal processing techniques will have to be developed.
Barry, Liam P.   +8 more
core   +3 more sources

Quantum spectroscopy of plasmonic nanostructures

open access: yes, 2014
We use frequency entangled photons, generated via spontaneous parametric down conversion, to measure the broadband spectral response of an array of gold nanoparticles exhibiting Fano-type plasmon resonance.
Kalashnikov, Dmitry A.   +3 more
core   +2 more sources

Cumulative Social Disadvantage and Disease Activity in Juvenile Idiopathic Arthritis: A Childhood Arthritis and Rheumatology Research Alliance Registry Study

open access: yesArthritis Care &Research, EarlyView.
Objective Social determinants of health (SDOH) contribute to juvenile idiopathic arthritis (JIA) disparities, but most studies have assessed SDOH independently rather than cumulatively across individual, family, and neighborhood levels. Using a socioecological framework, we investigated the relationship among cumulative social disadvantage ...
William Daniel Soulsby   +448 more
wiley   +1 more source

Classification and Identification Method of Communication Radiation Source Feature Based on Softmax Regression [PDF]

open access: yesJisuanji gongcheng, 2018
According to the characteristics of the current communication source identification method needs not only the higher number of samples,and identification efficiency is low,recognition rate drop,this paper proposes a Softmax regression was applied to ...
LIU Yachong,TANG Zhiling
doaj  

ORTHOGONAL NOISE-LIKE SIGNAL SYMBOLS FOR BROADBAND CHANNEL PROTECTION [PDF]

open access: yesНаучно-технический вестник информационных технологий, механики и оптики, 2019
The paper deals with development and analysis of particular case in a complex protection for a channel where radio messages are exchanged on the basis of mutually orthogonal signal broadband characters and alphabets based on them.
A. Y. Grishentsev   +3 more
doaj   +1 more source

Design of a Digital Array Signal Processing System with Full Array Element

open access: yesRemote Sensing, 2023
For the application of a digital array signal processing system with a high sampling rate and large bandwidth, and considering the constraints of limited resources (performance, volume, power consumption, weight, etc.), this paper proposes a design and ...
Guoyao Xiao   +4 more
doaj   +1 more source

Comparative study for broadband direction of arrival estimation techniques [PDF]

open access: yes, 2012
This paper reviews and compares three different linear algebraic signal subspace techniques for broadband direction of arrival estimation --- (i) the coherent signal subspace approach, (ii) eigenanalysis of the parameterised spatial correlation matrix ...
Alrmah, Mohamed Abubaker   +3 more
core  

Trapped Rainbow Techniques for Spectroscopy on a Chip and Fluorescence Enhancement

open access: yes, 2012
We report on the experimental demonstration of the broadband "trapped rainbow" in the visible range using arrays of adiabatically tapered optical nano waveguides.
Kildishev, Alexander V.   +3 more
core   +1 more source

Angle of Arrival Estimation for Broadband Signals: A Comparison [PDF]

open access: yesIET Intelligent Signal Processing Conference 2013 (ISP 2013), 2013
This paper reviews and compares three different linear algebraic signal subspace techniques for angle of arrival estimation. These include a polynomial matrix approach to multiple signal classification (MUSIC), a parameterised spatial covariance matrix approach, and an auto-focussing based version of coherent signal subspace estimation applied to MUSIC.
Alrmah, Mohamed Abubaker   +4 more
openaire   +1 more source

A Compact Spin‐Coated Graphene UWB Antenna for Breast Tumor Detection

open access: yesAdvanced Engineering Materials, EarlyView.
A compact, spin‐coated graphene ultra‐wideband patch antenna designed for breast tumor detection, capable of distinguishing between malignant and benign tumors. This innovative antenna can serve as an effective initial screening tool, particularly in resource‐limited settings such as rural areas, where access to advanced medical equipment like MRI and ...
Raja Rashidul Hasan   +9 more
wiley   +1 more source

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