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It is known that the cross-correlation function (CCF) of a partially coherent vortex (PCV) beam shows a robust link with the radial and azimuthal mode indices. However, the previous proposals are difficult to measure the CCF in practical…

光学 · 物理学 2016-08-02 Ruifeng Liu , Feiran Wang , Dongxu Chen , Yunlong Wang , Yu Zhou , Hong Gao , Pei Zhang , Fuli Li

This paper investigates distributed joint source-channel coding (JSCC) for correlated image semantic transmission over wireless channels. In this setup, correlated images at different transmitters are separately encoded and transmitted…

信息论 · 计算机科学 2025-03-28 Yufei Bo , Meixia Tao

In this paper, an improved numerical solver to evaluate the time-dependent radiative transfer equation (RTE) for underwater optical wireless communications (UOWC) is investigated. The RTE evaluates the optical path-loss of light wave in an…

信号处理 · 电气工程与系统科学 2019-05-07 Elmehdi Illi , Faissal El Bouanani , Ki-Hong Park , Fouad Ayoub , Mohamed-Slim Alouini

Inverse scattering is the process of estimating the spatial distribution of the scattering potential of an object by measuring the scattered wavefields around it. In this paper, we consider reflection tomography of high contrast objects…

信号处理 · 电气工程与系统科学 2020-12-17 Ajinkya Kadu , Hassan Mansour , Petros T. Boufounos

Considering the problem of joint source-channel coding (JSCC) for multi-user transmission of images over noisy channels, an autoencoder-based novel deep joint source-channel coding scheme is proposed in this paper. In the proposed JSCC…

信号处理 · 电气工程与系统科学 2021-02-03 Mingze Ding , Jiahui Li , Mengyao Ma , Xiaopeng Fan

We present a fully coherent, analytic model of the backscattering intensity in all HH, HV, VH and VV channels, for the volume scattering of radiation from a layer of finite thickness, such as a vegetation layer over bare soil. We aim for a…

光学 · 物理学 2024-02-09 Esteban Calzetta , Mariano Franco

We first report a novel phenomenon that manifests itself in a colossal difference in soft x-ray reflectivity from ferromagnetic transition-metal films between the left- and right-handed circular polarization (LCP and RCP) modes at a…

其他凝聚态物理 · 物理学 2010-02-03 Dae-Eun Jeong , Sang-Koog Kim

A relativistic microscopic optical model potential for nucleon-nucleus scattering is developed based on the \emph{ab initio} relativistic Brueckner-Hartree-Fock (RBHF) theory with the improved local density approximation, which is…

核理论 · 物理学 2024-06-13 Pianpian Qin , Sibo Wang , Hui Tong , Qiang Zhao , Chencan Wang , Z. P. Li , Peter Ring

The transverse coherence functions (TCFs) of phase and amplitude fluctuations of a seismic wave are powerful to estimate the spatial distribution, length scales, and strength of random heterogeneities. However, TCFs have been formulated for…

地球物理 · 物理学 2021-02-03 Hao Hu , Yingcai Zheng

Multiple optical scattering occurs when light propagates in a non-uniform medium. During the multiple scattering, images were distorted and the spatial information they carried became scrambled. However, the image information is not lost…

计算机视觉与模式识别 · 计算机科学 2021-07-30 Xinyu Gao , Yi Li , Yanqing Qiu , Bangning Mao , Miaogen Chen , Yanlong Meng , Chunliu Zhao , Juan Kang , Yong Guo , Changyu Shen

This is the second of a series of papers devoted to develop a microscopical approach to the dipole emission process and its relation to coherent transport in random media. In this Letter, we deduce a relation between the transverse decay…

光学 · 物理学 2009-03-12 M. Donaire

In this paper, we give an overview of spatially coupled turbo codes (SC-TCs), the spatial coupling of parallel and serially concatenated convolutional codes, recently introduced by the authors. For presentation purposes, we focus on…

信息论 · 计算机科学 2014-07-03 Alexandre Graell i Amat , Saeedeh Moloudi , Michael Lentmaier

Resonant (elastic) soft x-ray scattering (RSXS) offers a unique element, site, and valence specific probe to study spatial modulations of charge, spin, and orbital degrees of freedom in solids on the nanoscopic length scale. It cannot only…

材料科学 · 物理学 2013-04-12 J. Fink , E. Schierle , E. Weschke , J. Geck

Optical beam propagation in random media is characterized by familiar speckle patterns generated by intricate interference effects. Such patterns may be modified and possibly attenuated for partially coherent incident beam profiles. In the…

偏微分方程分析 · 数学 2025-08-19 Guillaume Bal , Anjali Nair

The refraction of space-time (ST) wave packets at planar interfaces between non-dispersive, homogeneous, isotropic dielectrics exhibit fascinating phenomena, even at normal incidence. Examples of such refractive phenomena include…

This paper explores feedback systems using incremental redundancy (IR) with noiseless transmitter confirmation (NTC). For IR-NTC systems based on {\em finite-length} codes (with blocklength $N$) and decoding attempts only at {\em certain…

信息论 · 计算机科学 2013-09-04 Tsung-Yi Chen , Adam R. Williamson , Nambi Seshadri , Richard D. Wesel

We present a microscopic theory of resonant soft x-ray scattering (RSXS) that accounts for the delocalized character of valence electrons. Unlike past approaches defined in terms of form factors for atoms or clusters, we develop a…

强关联电子 · 物理学 2013-04-08 David Benjamin , Dmitry Abanin , Peter Abbamonte , Eugene Demler

This note proposes rapidly convergent computational formulae for evaluating scattering kernels from radiative transfer theory. The approach used here does not rely on Legendre expansions, but rather uses exponentially convergent numerical…

数值分析 · 数学 2015-12-09 Hans Engler

We propose a correction to the conventional Rytov approximation (RA) and investigate its performance for predicting wave scattering under strong scattering conditions. An important motivation for the correction and investigation is to help…

计算物理 · 物理学 2022-11-30 Amartansh Dubey , Xudong Chen , Ross Murch

Continuous-variable (CV) codes and their application in quantum communication have attracted increasing attention. In particular, one typical CV codes, cat-codes, has already been experimentally created using trapped atoms in cavities with…

量子物理 · 物理学 2025-07-08 Pei-Zhe Li , William J. Munro , Kae Nemoto , Nicoló Lo Piparo
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