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Low earth orbit (LEO) satellite based non-terrestrial networks are a key theme of the upcoming 6G networks. These space networks are proposed to be used for high-mobility use-cases like airplanes and vehicles. The initial access process…

Signal Processing · Electrical Eng. & Systems 2025-06-11 Ashutosh Balakrishnan , Pierre Popineau , Philippe Martins

Most recent successes on forecasting the people motion are based on LSTM models and all most recent progress has been achieved by modelling the social interaction among people and the people interaction with the scene. We question the use…

Computer Vision and Pattern Recognition · Computer Science 2020-10-22 Francesco Giuliari , Irtiza Hasan , Marco Cristani , Fabio Galasso

The deployment of low earth orbit (LEO) satellites with terrestrial networks can potentially increase the efficiency and reduce the cost of relaying content from a data center to a set of edge caches hosted by 6G and beyond enabled macro…

Signal Processing · Electrical Eng. & Systems 2023-03-24 Basem Abdellatif , Mostafa M. Shibl , Tamer Khattab , John Tadrous , Tarek ElFouly , Nizar Zorba

This study analyses the medium access control (MAC) layer aspects of a low-Earth-orbit (LEO) satellite-based Internet of Things (IoT) network. A transmission scheme based on change detection is proposed to accommodate more users within the…

Signal Processing · Electrical Eng. & Systems 2024-06-21 Ayush Kumar Dwivedi , Houcine Chougrani , Sachin Chaudhari , Neeraj Varshney , Symeon Chatzinotas

We present a comparative study of transformer-based architectures for solar flare forecasting using heterogeneous data modalities, including images, video sequences, and time-series observations. Our analysis evaluates three recent…

Instrumentation and Methods for Astrophysics · Physics 2025-12-05 S. Riggi , P. Romano , A. Pilzer , U. Becciani

Satellite communication by leveraging the use of low earth orbit (LEO) satellites is expected to play an essential role in future communication systems through providing ubiquitous and continuous wireless connectivity. This thus has…

Networking and Internet Architecture · Computer Science 2022-10-18 Jingwei Zhang , Dali Qin , Chuili Kong , Feiran Zhao , Rong Li , Jun Wang , Ye Wang

Relying on the powerful communication capabilities and rapidly changing geometric configuration, the Low Earth Orbit (LEO) satellites have the potential to offer integrated communication and navigation (ICAN) services. However, the isolated…

Signal Processing · Electrical Eng. & Systems 2024-10-28 Jiajing Li , Binghong Liu , Mugen Peng

Positioning using Global Navigation Satellite Systems (GNSS) typically requires several seconds of continuous signal reception from satellites in Medium Earth Orbit (MEO). This requirement poses challenges for applications where receivers…

Signal Processing · Electrical Eng. & Systems 2026-03-18 Soham Desai , Dave Cade

This paper investigates the localization, synchronization, and speed estimation of a mobile user equipment (UE) leveraging integrated terrestrial and non-terrestrial networks (NTNs), in particular low Earth orbit (LEO) satellites. We focus…

Signal Processing · Electrical Eng. & Systems 2025-09-24 Yasaman Ettefagh , Sharief Saleh , Musa Furkan Keskin , Hui Chen , Gonzalo Seco-Granados , Henk Wymeersch

Low earth orbit (LEO) satellite networks are emerging as a key infrastructure for global connectivity and space-based sensing. Many tasks in such systems can be formulated as measurement-set-to-spatial-inference problems, where spatial…

Networking and Internet Architecture · Computer Science 2026-05-12 Liping Tao , Xindi Tong , Chee Wei Tan

We consider the downlink of a MIMO-OFDM wireless systems where the base-station (BS) has M antennas and serves K single-antenna user terminals (UT) with K larger than or equal to M. Users estimate their channel vectors from common downlink…

Information Theory · Computer Science 2008-12-01 Hooman Shirani-Mehr , Daniel N. Liu , Giuseppe Caire

In recent years, the number of satellites in orbit has increased rapidly, with megaconstellations like Starlink providing near-global, delay-sensitive communication services. However, not all satellite communication use cases have stringent…

Networking and Internet Architecture · Computer Science 2026-03-10 Ethan Fettes , Pablo G. Madoery , Halim Yanikomeroglu , Gunes Karabulut Kurt , Abhishek Naik , Stéphane Martel

As air travel demand increases, uninterrupted high-speed internet access becomes essential. However, current satellite-based systems face latency and connectivity challenges. While prior research has focused on terrestrial 5G and…

Networking and Internet Architecture · Computer Science 2025-04-11 Raúl Parada , Victor Monzon Baeza , Carlos Horcajo Fernández de Gamboa , Rocío Serrano Camacho , Carlos Monzo

Motion prediction plays an important role in autonomous driving. This study presents LMFormer, a lane-aware transformer network for trajectory prediction tasks. In contrast to previous studies, our work provides a simple mechanism to…

Computer Vision and Pattern Recognition · Computer Science 2025-04-15 Harsh Yadav , Maximilian Schaefer , Kun Zhao , Tobias Meisen

Low-earth orbit (LEO) satellite communication (SatCom) has emerged as a promising technology to improve wireless connectivity in global areas. Cell-free massive multiple-input multiple-output (CF-mMIMO), an architecture proposed for…

Signal Processing · Electrical Eng. & Systems 2026-01-27 Xiangyu Li , Bodong Shang

As low Earth orbit (LEO) satellite communication systems are gaining increasing popularity, new theoretical methodologies are required to investigate such networks' performance at large. This is because deterministic and location-based…

Systems and Control · Electrical Eng. & Systems 2020-05-06 Niloofar Okati , Taneli Riihonen , Dani Korpi , Ilari Angervuori , Risto Wichman

The frequency coexistence between geostationary orbit (GEO) and low earth orbit (LEO) satellite systems is expected to be a promising approach for relieving spectrum scarcity. However, it is essential to manage mutual interference between…

Information Theory · Computer Science 2024-08-06 Jaehak Ryu , Aryan Kaushik , Byungju Lee , Wonjae Shin

Integrating contention-based random access procedures into low Earth orbit (LEO) satellite communication (SatCom) systems poses new challenges, including long propagation delays, large Doppler shifts, and a large number of simultaneous…

Signal Processing · Electrical Eng. & Systems 2026-01-27 Hyunwoo Lee , Ian P. Roberts , Jinkyo Jeong , Daesik Hong

In this paper, we investigate the effect of the strong time-varying transmission distance on the performance of the low-earth orbit (LEO) satellite-terrestrial transmission (STT) system. We propose a new analytical framework using…

Signal Processing · Electrical Eng. & Systems 2022-06-14 Yuanyuan Ma , Tiejun Lv , Tingting Li , Gaofeng Pan , Yunfei Chen , Mohamed-Slim Alouini

Low Earth orbit (LEO) satellite constellations rely on inter-satellite links (ISLs) to provide global connectivity. However, one significant challenge is to establish and maintain inter-plane ISLs, which support communication between…

Networking and Internet Architecture · Computer Science 2021-06-14 Israel Leyva-Mayorga , Maik Röper , Bho Matthiesen , Armin Dekorsy , Petar Popovski , Beatriz Soret