Results 31 to 40 of about 1,543 (216)

On OTFS Modulation for High-Doppler Fading Channels [PDF]

open access: yes2018 Information Theory and Applications Workshop (ITA), 2018
Orthogonal time frequency space (OTFS) modulation is a 2-dimensional (2D) modulation scheme designed in the delay-Doppler domain, unlike traditional modulation schemes which are designed in the time-frequency domain. Through a series of 2D transformations, OTFS converts a doubly-dispersive channel into an almost non-fading channel in the delay-Doppler ...
K. R. Murali, A. Chockalingam
openaire   +2 more sources

Label-free quantitative 3D tomographic imaging for partially coherent light microscopy [PDF]

open access: yes, 2017
Crucial benefits provided by partially coherent light microscopy such as improved spatial resolution, optical sectioning and speckle-noise suppression are exploited here to achieve 3D quantitative imaging: reconstruction of the object refractive index ...
Alieva, Tatiana Krasheninnikova   +2 more
core   +2 more sources

4D Frequency Analysis of Computational Cameras for Depth of Field Extension [PDF]

open access: yes, 2009
Depth of field (DOF), the range of scene depths that appear sharp in a photograph, poses a fundamental tradeoff in photography---wide apertures are important to reduce imaging noise, but they also increase defocus blur.
Anat Levin   +5 more
core   +3 more sources

Innovative pupil topographies for sparse aperture telescopes and SNR [PDF]

open access: yes, 2008
Since the first application of the telescope to astronomy in 1610, most new astronomical discoveries require larger and larger radiation collecting areas.
Breckinridge, James   +2 more
core   +1 more source

Deep Learning-Based Signal Detection for Underwater Acoustic OTFS Communication

open access: yesJournal of Marine Science and Engineering, 2022
Orthogonal time frequency space (OTFS) is a novel two-dimensional (2D) modulation technique that provides reliable communications over time- and frequency-selective channels.
Yuzhi Zhang   +5 more
doaj   +1 more source

Low-Complexity Iterative Detection for Orthogonal Time Frequency Space Modulation

open access: yes, 2017
We elaborate on the recently proposed orthogonal time frequency space (OTFS) modulation technique, which provides significant advantages over orthogonal frequency division multiplexing (OFDM) in Doppler channels.
Hong, Yi   +4 more
core   +1 more source

SIMcheck:A toolbox for successful super-resolution structured illumination microscopy [PDF]

open access: yes, 2015
Three-dimensional structured illumination microscopy (3D-SIM) is a versatile and accessible method for super-resolution fluorescence imaging, but generating high-quality data is challenging, particularly for non-specialist users.
B Huang   +16 more
core   +2 more sources

FPGA Implementation of OTFS Modulation for 6G Communication Systems

open access: yes2023 IEEE Future Networks World Forum (FNWF), 2023
Sixth-generation (6G) communication systems are poised to accommodate high data-rate wireless communication services in highly dynamic channels, with applications including high-speed trains, unmanned aerial vehicles, and intelligent transportation systems.
Murat Isik   +3 more
openaire   +2 more sources

Highly Efficient Mechanochromic Thermally Activated Delayed Fluorescence in the Deep Red to Near‐Infrared in Copper(I) [2.2]Isoindolinophanyl‐Carbene Carbazolates

open access: yesAngewandte Chemie, EarlyView.
Electrophilic [2.2]isoindolinophanyl‐based carbene iPC has been employed as charge‐transfer acceptor ligand in a series of [Cu(iPC)(carbazolate)], which show mechanochromism and environment‐dependent luminescence due to intermolecular C─‐H‐π interactions.
André M. T. Muthig   +10 more
wiley   +2 more sources

Extended GFDM Framework: OTFS and GFDM Comparison

open access: yes, 2018
Orthogonal time frequency space modulation (OTFS) has been recently proposed to achieve time and frequency diversity, especially in linear time-variant (LTV) channels with large Doppler frequencies.
Chafii, Marwa   +3 more
core   +1 more source

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