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Analyzing radar signals from complex Electronic Warfare (EW) environment is a non-trivial task.However, in the real world, the changing EW environment results in inconsistent signal distribution, such as the pulse repetition interval (PRI)…

Machine Learning · Computer Science 2023-02-21 Honglin Wu , Xueqiong Li , Long Lan , Liyang Xu , Yuhua Tang

Digital twins are now a staple of wireless networks design and evolution. Creating an accurate digital copy of a real system offers numerous opportunities to study and analyze its performance and issues. It also allows designing and testing…

Networking and Internet Architecture · Computer Science 2024-03-20 Paolo Testolina , Michele Polese , Pedram Johari , Tommaso Melodia

In recent years, the complexity of 5G and beyond wireless networks has escalated, prompting a need for innovative frameworks to facilitate flexible management and efficient deployment. The concept of digital twins (DTs) has emerged as a…

Networking and Internet Architecture · Computer Science 2024-04-24 Zifan Zhang , Mingzhe Chen , Zhaohui Yang , Yuchen Liu

Ray tracing is widely employed to model the propagation of radio-frequency (RF) signal in complex environment. The modelling performance greatly depends on how accurately the target scene can be depicted, including the scene geometry and…

Computer Vision and Pattern Recognition · Computer Science 2025-01-07 Haifeng Jia , Xinyi Chen , Yichen Wei , Yifei Sun , Yibo Pi

This article presents a vision where \textit{real-time} digital twins of the physical wireless environments are continuously updated using multi-modal sensing data from the distributed infrastructure and user devices, and are used to make…

Signal Processing · Electrical Eng. & Systems 2023-01-27 Ahmed Alkhateeb , Shuaifeng Jiang , Gouranga Charan

Site-specific radio frequency (RF) propagation prediction increasingly relies on models built from visual data such as cameras and LIDAR sensors. When operating in dynamic settings, the environment may only be partially observed. This paper…

Robotics · Computer Science 2022-07-05 Mingsheng Yin , Yaqi Hu , Tommy Azzino , Seongjoon Kang , Marco Mezzavilla , Sundeep Rangan

Wide-angle lenses are commonly used in perception tasks requiring a large field of view. Unfortunately, these lenses produce significant distortions, making conventional models that ignore the distortion effects unable to adapt to…

Computer Vision and Pattern Recognition · Computer Science 2024-07-25 Akshaya Athwale , Arman Afrasiyabi , Justin Lagüe , Ichrak Shili , Ola Ahmad , Jean-François Lalonde

Conventional methods for outdoor environment reconstruction rely predominantly on vision-based techniques like photogrammetry and LiDAR, facing limitations such as constrained coverage, susceptibility to environmental conditions, and high…

Networking and Internet Architecture · Computer Science 2024-04-13 Hrant Khachatrian , Rafayel Mkrtchyan , Theofanis P. Raptis

Creating a digital world that closely mimics the real world with its many complex interactions and outcomes is possible today through advanced emulation software and ubiquitous computing power. Such a software-based emulation of an entity…

Signal Processing · Electrical Eng. & Systems 2023-05-18 Batool Salehi , Utku Demir , Debashri Roy , Suyash Pradhan , Jennifer Dy , Stratis Ioannidis , Kaushik Chowdhury

Learning site-specific beams that adapt to the deployment environment, interference sources, and hardware imperfections can lead to noticeable performance gains in coverage, data rate, and power saving, among other interesting advantages.…

Signal Processing · Electrical Eng. & Systems 2025-12-02 Hao Luo , Ahmed Alkhateeb

Ray tracing algorithms, that can simulate multipath radio propagation in presence of geometric obstacles such as buildings, objects or vehicles, are becoming quite popular, due to the increasing availability of digital environment databases…

Signal Processing · Electrical Eng. & Systems 2023-06-14 Denis Bilibashi , Enrico M. Vitucci , Vittorio Degli-Esposti

Effective channel estimation in sparse and high-dimensional environments is essential for next-generation wireless systems, particularly in large-scale MIMO deployments. This paper introduces a novel framework that leverages digital twins…

Signal Processing · Electrical Eng. & Systems 2025-04-10 Sadjad Alikhani , Ahmed Alkhateeb

Multipaths, reflections, diffractions, and material interactions complicate indoor wireless propagation modelling. More than 80% of wireless data is consumed indoors; hence, planning successful deployments and maximizing network performance…

The increasing relevance of resilience in wireless connectivity for Industry 4.0 stems from the growing complexity and interconnectivity of industrial systems, where a single point of failure can disrupt the entire network, leading to…

Signal Processing · Electrical Eng. & Systems 2023-10-16 Anton Krause , Mohd Danish Khursheed , Philipp Schulz , Friedrich Burmeister , Gerhard Fettweis

Domain-specific datasets are the foundation for unleashing artificial intelligence (AI)-driven wireless innovation. Yet existing wireless AI corpora are slow to produce, offer limited modeling fidelity, and cover only narrow scenario types.…

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

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

In this paper, we propose a multi-RIS-aided wireless imaging framework in 3D facing the distributed placement of multi-sensor networks. The system creates a randomized reflection pattern by adjusting the RIS phase shift, enabling the…

Image and Video Processing · Electrical Eng. & Systems 2023-11-21 Fuhai Wang , Chun Wang , Rujing Xiong , Zhengyu Wang , Tiebin Mi , Robert Caiming Qiu

Explicit neural representations such as 3D Gaussian Splatting (3DGS) enable high-fidelity and real-time novel view synthesis, yet optimize for alpha-composited optical appearance rather than ray-intersectable geometry. In contrast,…

Computer Vision and Pattern Recognition · Computer Science 2026-05-11 Niklas Vaara , Lam Huynh , Pekka Sangi , Miguel Bordallo López , Janne Heikkilä

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