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Dispersion curves characterize the frequency dependence of the phase and the group velocities of propagating elastic waves. Many analytical and numerical techniques produce dispersion curves from physics-based models. However, it is often…

数据分析、统计与概率 · 物理学 2021-10-26 V. V. N. Sriram Malladi , Mohammad I. Albakri , Manu Krishnan , Serkan Gugercin , Pablo A. Tarazaga

The transport of light in disordered media is governed by open transmission channels, which enable nearly complete transmission of the incident power, despite low average transmission. Extensively studied in diffusive media and chaotic…

We study the effects of discrete, randomly distributed time delays on the dynamics of a coupled system of self-propelling particles. Bifurcation analysis on a mean field approximation of the system reveals that the system possesses patterns…

斑图形成与孤子 · 物理学 2015-06-05 Luis Mier-y-Teran-Romero , Brandon Lindley , Ira B. Schwartz

Mode-division multiplexing (MDM) is seen as a possible solution to satisfy the rising capacity demands of optical communication networks. To make MDM a success, fibers supporting the propagation of a huge number of modes are of interest.…

计算物理 · 物理学 2020-02-19 Marius Brehler , Malte Schirwon , Peter M. Krummrich , Dominik Göddeke

In this work, we present a framework analysis of millimeter waves (mmWaves) vehicular communications systems. Communications between vehicles take place through a cooperative relay which acts as an intermediary base station (BS). The relay…

信息论 · 计算机科学 2020-10-26 Elyes Balti , Brian K. Johnson

We present the Groupwise Diffusion Model (GDM), which divides data into multiple groups and diffuses one group at one time interval in the forward diffusion process. GDM generates data sequentially from one group at one time interval,…

计算机视觉与模式识别 · 计算机科学 2023-10-03 Sangyun Lee , Gayoung Lee , Hyunsu Kim , Junho Kim , Youngjung Uh

The Gamma-Gamma (GG) distribution has recently attracted the interest within the research community due to its involvement in various communication systems. In the context of RF wireless communications, GG distribution accurately models the…

信息论 · 计算机科学 2009-05-11 Nestor D. Chatzidiamantis , George K. Karagiannidis

This paper presents a robust secondary control strategy for frequency synchronization and active power sharing for inverter-based microgrids. The problem is addressed in a multi-agent fashion where the local controllers of the distributed…

系统与控制 · 电气工程与系统科学 2023-07-27 Milad Gholami , Gianni Bianchini , Antonio Vicino

Vectorial nature of dissipative solitons (DSs) with high repetition rates is studied for the first time in a normal-dispersion fiber laser. Despite the fact that the formed DSs are strongly chirped and the repetition rate is greater than…

光学 · 物理学 2016-08-24 Yiyang Luo , Deming Liu , Lei Li , Qizhen Sun , Zhichao Wu , Zhilin Xu , Songnian Fu , Luming Zhao

A multimode optical fiber with a truncated transverse cross section acts as a powerful versatile support to investigate the wave features of complex ray dynamics. In this paper, we concentrate on the case of a geometry inducing a mixed…

光学 · 物理学 2016-03-23 Claire Michel , Markus Allgaier , Valérie Doya

In a network, a node is said to incur a delay if its encoding of each transmitted symbol involves only its received symbols obtained before the time slot in which the transmitted symbol is sent (hence the transmitted symbol sent in a time…

信息论 · 计算机科学 2016-10-19 Silas L. Fong

Two discrete-time interference channel models are developed for information transmission over a single span of optical fiber using wavelength-division multiplexing (WDM) and lumped amplification. The models are derived from the nonlinear…

信息论 · 计算机科学 2017-08-14 Hassan Ghozlan , Gerhard Kramer

Starting with a product initial state, squeezed (squeezed coherent) state in one of the modes, and vacuum in the rest, we report that a circular waveguide comprising modes coupled with varying coupling strength is capable of producing…

量子物理 · 物理学 2024-03-26 T Anuradha , Ayan Patra , Rivu Gupta , Amit Rai , Aditi Sen De

Decomposing multivariate time series with certain basic dynamics is crucial for understanding, predicting and controlling nonlinear spatiotemporally dynamic systems such as the brain. Dynamic mode decomposition (DMD) is a method for…

信号处理 · 电气工程与系统科学 2025-07-15 Ryohei Fukuma , Yoshinobu Kawahara , Okito Yamashita , Kei Majima , Haruhiko Kishima , Takufumi Yanagisawa

As next-generation wireless communication systems need to be able to operate in high-frequency bands and high-mobility scenarios, delay-Doppler (DD) domain multicarrier (DDMC) modulation schemes, such as orthogonal time frequency space…

信号处理 · 电气工程与系统科学 2025-10-01 Hao Zhou , Yiyan Ma , Dan Fei , Weirong Liu , Zhengyu Zhang , Mi Yang , Guoyu Ma , Yunlong Lu , Ruisi He , Guoyu Wang , Cheng Li , Zhaohui Song , Bo Ai

In this work, we study the time-frequency (TF) localization characteristics of the prototype pulse of orthogonal delay-Doppler (DD) division multiplexing modulation, namely, the DD plane orthogonal pulse (DDOP). The TF localization…

信号处理 · 电气工程与系统科学 2024-12-19 Akram Shafie , Jinhong Yuan , Nan Yang , Hai Lin

The problem of designing efficient feedback-based scheduling policies for chunked codes (CC) over packet networks with delay and loss is considered. For networks with feedback, two scheduling policies, referred to as random push (RP) and…

信息论 · 计算机科学 2012-07-20 Anoosheh Heidarzadeh , Amir H. Banihashemi

In this paper, the performance of high speed optical fiber based network is analysed by using dispersion compensating module (DCM). The optimal operating condition of the DCM is obtained by considering dispersion management configurations…

网络与互联网体系结构 · 计算机科学 2015-03-12 Ojuswini Arora , Dr. Amit kumar Garg , Savita Punia

The mean-squared displacement (MSD) of a hard sphere and of a dumbbell molecule consisting of two fused hard spheres immersed in a dense hard-sphere system is calculated within the mode-coupling theory for ideal liquid-glass transitions. It…

软凝聚态物质 · 物理学 2009-11-07 S. -H. Chong , W. Gotze , M. R. Mayr

Classifier-Free Guidance (CFG) is widely used to improve conditional fidelity in diffusion models, but its impact on sampling dynamics remains poorly understood. Prior studies, often restricted to unimodal conditional distributions or…

机器学习 · 计算机科学 2026-02-19 Cheng Jin , Qitan Shi , Yuantao Gu