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Ray tracing (RT) simulation is a widely used approach to enable modeling wireless channels in applications such as network digital twins. However, the computational cost to execute ray tracing (RT) is proportional to factors such as the…

Networking and Internet Architecture · Computer Science 2025-07-24 Cláudio Modesto , Lucas Mozart , Pedro Batista , André Cavalcante , Aldebaro Klautau

Digital Twin (DT) technologies promise to remove cyber-physical barriers in systems and services and provide seamless management of distributed resources effectively. Ideally, full-fledged instantiations of DT offer bi-directional features…

Computational Engineering, Finance, and Science · Computer Science 2024-10-14 Ricardo M. Czekster , Alexeis Garcia Perez , Manolya Kavakli-Thorne , Seif Allah El Mesloul Nasri , Siraj Shaikh

Being able to reproduce physical phenomena ranging from light interaction to contact mechanics, simulators are becoming increasingly useful in more and more application domains where real-world interaction or labeled data are difficult to…

Robotics · Computer Science 2022-09-13 Eric Heiden , Ziang Liu , Vibhav Vineet , Erwin Coumans , Gaurav S. Sukhatme

Creating functional Digital Twins, simulatable 3D replicas of the real world, is a central challenge in computer vision. Current methods like NeRF produce visually rich but functionally incomplete twins. The key barrier is the lack of…

Computer Vision and Pattern Recognition · Computer Science 2026-03-04 Zhe Chen , Peilin Zheng , Wenshuo Chen , Xiucheng Wang , Yutao Yue , Nan Cheng

The wireless spectrum's increasing complexity poses challenges and opportunities, highlighting the necessity for real-time solutions and robust data processing capabilities. Digital Twin (DT), virtual replicas of physical systems, integrate…

Networking and Internet Architecture · Computer Science 2024-11-11 Clifton Paul Robinson , Andrea Lacava , Pedram Johari , Francesca Cuomo , Tommaso Melodia

Quantitative comparison of the quality of photoacoustic image reconstruction algorithms remains a major challenge. No-reference image quality measures are often inadequate, but full-reference measures require access to an ideal reference…

Complex IoT ecosystems often require the usage of Digital Twins (DTs) of their physical assets in order to perform predictive analytics and simulate what-if scenarios. DTs are able to replicate IoT devices and adapt over time to their…

Networking and Internet Architecture · Computer Science 2024-01-02 Luca Sciullo , Alberto De Marchi , Angelo Trotta , Federico Montori , Luciano Bononi , Marco Di Felice

Radio-Frequency (RF) imaging concerns the digital recreation of the surfaces of scene objects based on the scattered field at distributed receivers. To solve this difficult inverse scattering problems, data-driven methods are often employed…

Machine Learning · Computer Science 2025-03-19 Kyriakos Stylianopoulos , Panagiotis Gavriilidis , Gabriele Gradoni , George C. Alexandropoulos

Current foundation models (FMs) rely on token representations that directly fragment continuous real-world multimodal data into discrete tokens. They limit FMs to learning real-world knowledge and relationships purely through statistical…

Machine Learning · Computer Science 2025-05-08 Yiqing Shen , Hao Ding , Lalithkumar Seenivasan , Tianmin Shu , Mathias Unberath

As drones become increasingly prevalent in human life, they also raises security concerns such as unauthorized access and control, as well as collisions and interference with manned aircraft. Therefore, ensuring the ability to accurately…

Signal Processing · Electrical Eng. & Systems 2023-08-29 Zixiao Zhao , Qinghe Du , Xiang Yao , Lei Lu , Shijiao Zhang

Determining the optimal phase configurations of reconfigurable intelligent surface (RIS) elements typically requires complex channel estimation procedures with high pilot overhead, creating a bottleneck for real-time deployment in…

Signal Processing · Electrical Eng. & Systems 2026-04-21 Ömer Lütfü Karakelle , Sefa Kayraklık , İbrahim Hökelek , Ali Görçin , Halim Yanıkömeroğlu

Physics-based differentiable rendering (PBDR) has become an efficient method in computer vision, graphics, and machine learning for addressing an array of inverse problems. PBDR allows patterns to be generated from perceptions which can be…

Computer Vision and Pattern Recognition · Computer Science 2025-01-13 Preetish Kakkar , Srijani Mukherjee , Hariharan Ragothaman , Vishal Mehta

In this paper, we introduce a decentralized digital twin (DDT) framework for dynamical systems and discuss the prospects of the DDT modeling paradigm in computational science and engineering applications. The DDT approach is built on a…

Machine Learning · Computer Science 2022-07-26 Omer San , Suraj Pawar , Adil Rasheed

Wireless digital twins can be leveraged to provide site-specific synthetic channel information through precise physical modeling and signal propagation simulations. This can help reduce the overhead of channel state information (CSI)…

Signal Processing · Electrical Eng. & Systems 2026-04-21 Hao Luo , Saeed R. Khosravirad , Ahmed Alkhateeb

The development of Digital Twins (DTs) represents a transformative advance for simulating and optimizing complex systems in a controlled digital space. Despite their potential, the challenge of constructing DTs that accurately replicate and…

Systems and Control · Electrical Eng. & Systems 2024-06-21 Longfei Ma , Nan Cheng , Xiucheng Wang , Jiong Chen , Yinjun Gao , Dongxiao Zhang , Jun-Jie Zhang

Simultaneous imaging of fluorescence-labeled and label-free phase objects in the same sample provides distinct and complementary information. Most multimodal fluorescence-phase imaging operates in transmission mode, capturing fluorescence…

Optics · Physics 2024-08-20 Renzhi He , Yucheng Li , Junjie Chen , Yi Xue

Neural rendering paradigms have recently emerged as powerful tools for radio frequency (RF). However, by entangling RF sources with scene geometry and material properties, existing approaches limit downstream manipulation of scene geometry,…

Signal Processing · Electrical Eng. & Systems 2026-04-09 Fuhai Wang , Zihan Jin , Lehang Wang , Xuehui Dong , Tiebin Mi , Robert Caiming Qiu , Zenan ling

The highly dynamic nature of vehicular networks necessitates proactive and site-specific radio resource management (RRM) to achieve ultra-reliable low-latency communications. While Network Digital Twins (NDTs) have emerged as a promising…

Systems and Control · Electrical Eng. & Systems 2026-05-22 Armin Makvandi , Md. Zoheb Hassan , Md. Jahangir Hossain

With the fast evolving of cloud computing and artificial intelligence (AI), the concept of digital twin (DT) has recently been proposed and finds broad applications in industrial Internet, IoT, smart city, etc. The DT builds a mirror…

Networking and Internet Architecture · Computer Science 2021-05-18 Tom H. Luan , Ruhan Liu , Longxiang Gao , Rui Li , Haibo Zhou

Digital network twins (DNTs), by representing a physical network using a virtual model, offer significant benefits such as streamlined network development, enhanced productivity, and cost reduction for next-generation (nextG) communication…

Networking and Internet Architecture · Computer Science 2025-09-04 Zifan Zhang , Zhiyuan Peng , Hanzhi Yu , Mingzhe Chen , Yuchen Liu