Results 31 to 40 of about 1,330,765 (292)

Partially Coherent Channel Estimation Algorithm based on IR

open access: yesGuangtongxin yanjiu, 2021
For millimeter-wave large-scale Multiple-Input Multiple-Output (MIMO) systems with hybrid precoding, due to the hardware defects in the system, random phase shifts will be introduced in the received pilots, which will make the performance of traditional ...
Gui-yong LI, Ping-an LI, He-bin LI
doaj   +1 more source

High sensitivity optical coherence detector optimization [PDF]

open access: yes, 2001
An optimal optical filtering scheme for an optical coherence detection system gives very high detection sensitivities (-30dB) for a partially coherent source.
Coutinho, R.C.   +7 more
core   +1 more source

Phase Retrieval for Partially Coherent Observations [PDF]

open access: yesIEEE Transactions on Signal Processing, 2021
12 pages, 14 ...
Jonas Kornprobst   +3 more
openaire   +3 more sources

Propagation of partially coherent radiation using Wigner functions

open access: yesPhysical Review Accelerators and Beams, 2021
Undulator radiation from synchrotron light sources must be transported down a beam line from the source to the sample. A partially coherent photon beam may be represented in phase space using a Wigner function, and its transport may use some similar ...
Boaz Nash   +4 more
doaj   +1 more source

Modeling for Partially Spatially Coherent Vortex Beams

open access: yesIEEE Photonics Journal, 2017
We propose a method for modeling a wide class of partially spatially coherent vortex beams. It is shown that any member of such beams can be represented as an incoherent superposition of fully coherent vortex models weighted by a non-negative weighting ...
Zhangrong Mei
doaj   +1 more source

High-speed transmission characteristics of nonlinear spectral broadening carrier in turbulent channel

open access: yesTongxin xuebao, 2021
The nonlinear spectral broadening light source was used as a partially coherent carrier source with high repetition frequency to carry out experimental research on high-speed information transmission in atmospheric turbulence channels.A partially ...
Tianshu WANG   +5 more
doaj   +2 more sources

Self-Healing Properties of Partially Coherent Schell-Model Beams

open access: yesIEEE Photonics Journal, 2017
Convolution expression for partially coherent beams that are partially blocked by an opaque obstacle is derived in detail in a paraxial $ABCD$ optical system.
Gaofeng Wu, Xiaoyan Pang
doaj   +1 more source

Experimental Study on Partially Coherent Optical Coherent Detection

open access: yesPhotonics
When coherent detection occurs, the polarization mismatch between signal light and local oscillator light can reduce the efficiency of coherent detection.
Jingyuan Liang   +3 more
doaj   +1 more source

Phase conjugation of twisted Gaussian Schell model beams in stimulated down-conversion

open access: yesNanophotonics, 2021
Stimulated parametric down-conversion is a nonlinear optical process that can be used for phase conjugation and frequency conversion of an optical field.
dos Santos Gustavo H.   +8 more
doaj   +1 more source

Holographic beam shaping of partially coherent light

open access: yes, 2021
We present an algorithm for holographic shaping of partially coherent light, bridging the gap between traditional coherent and geometric optical approaches.
Alexander Jesacher (3957323)   +1 more
core   +1 more source

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