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Advancements in satellite technology have made direct-to-device connectivity a viable solution for ensuring global access. This method is designed to provide internet connectivity to remote, rural, or underserved areas where traditional…

Signal Processing · Electrical Eng. & Systems 2024-07-02 Zohre Mashayekh Bakhsh , Yasaman Omid , Gaojie Chen , Farbod Kayhan , Yi Ma , Rahim Tafazolli

Direct Device-to-Satellite (D2S) communications, which enable direct satellite connectivity with unmodified user equipment (UE), not only expand global coverage but also reshape the evolution of future access networks. However, D2S links…

Signal Processing · Electrical Eng. & Systems 2026-04-29 Konstantinos Nikitopoulos , Chathura Jayawardena

We consider realistic satellite communications systems for broadband and broadcasting applications, based on frequency-division-multiplexed linear modulations, where spectral efficiency is one of the main figures of merit. For these…

Information Theory · Computer Science 2013-01-18 Amina Piemontese , Andrea Modenini , Giulio Colavolpe , Nader Alagha

High throughput satellites employing multibeam antennas and full frequency reuse for broadband satellite services are considered in this paper. Such architectures offer, for example, a cost-effective solution to optimize data delivery and…

Signal Processing · Electrical Eng. & Systems 2019-02-08 Robert T. Schwarz , Thomas Delamotte , Kai-Uwe Storek , Andreas Knopp

Internet browsers use security protocols to protect sensitive messages. An inductive analysis of TLS (a descendant of SSL 3.0) has been performed using the theorem prover Isabelle. Proofs are based on higher-order logic and make no…

Cryptography and Security · Computer Science 2019-07-18 Lawrence C. Paulson

Global navigation satellite systems (GNSS) provide pervasive accurate positioning and timing services for a large gamut of applications, from Time based One-Time Passwords (TOPT), to power grid and cellular systems. However, there can be…

Cryptography and Security · Computer Science 2022-02-23 K. Zhang , M. Spanghero , P. Papadimitratos

The ever-increasing number of users and new services in urban regions can lead terrestrial base stations (BSs) to become overloaded and, consequently, some users to go unserved. Compounding this, users in urban areas can face severe…

Information Theory · Computer Science 2022-10-05 Safwan Alfattani , Animesh Yadav , Halim Yanikomeroglu , Abbas Yongacoglu

We address the applicability of quantum key distribution with continuous-variable coherent and squeezed states over long-distance satellite-based links, considering low Earth orbits and taking into account strong varying channel…

Quantum Physics · Physics 2021-01-25 Ivan Derkach , Vladyslav C Usenko

Future telecommunication systems are expected to co-exist with different backhauling nodes such as terrestrial or satellite systems. Satellite connectivity can add flexibility to backhauling networks and provide an alternative route for…

Networking and Internet Architecture · Computer Science 2019-11-14 Engin Zeydan , Yekta Turk

The co-existence of terrestrial and non-terrestrial networks (NTNs) is essential for achieving global coverage in sixth-generation cellular networks. Due to increasing spectrum demand, there is discussion in the world level to share some…

Signal Processing · Electrical Eng. & Systems 2026-02-06 Lingrui Zhang , Zheng Li , Sheng Yang

The broadcast nature of the wireless medium allows unintended users to eavesdrop the confidential information transmission. In this regard, we investigate the problem of secure communication between a source and a destination via a wireless…

Information Theory · Computer Science 2016-03-11 Sanket S. Kalamkar , Adrish Banerjee

This paper examines the uplink transmission of a single-antenna handsheld user to a cluster of satellites, with a focus on utilizing the inter-satellite links to enable cooperative signal detection. Two cases are studied: one with full CSI…

Information Theory · Computer Science 2023-05-31 Yasaman Omid , Zohre Mashayekh Bakhsh , Farbod Kayhan , Yi Ma , Rahim Tafazolli

Most TLS clients such as modern web browsers enforce coarse-grained TLS security configurations. They support legacy versions of the protocol that have known design weaknesses, and weak ciphersuites that provide fewer security guarantees…

Cryptography and Security · Computer Science 2018-09-18 Eman Salem Alashwali , Pawel Szalachowski

With a motive of ubiquitous connectivity over the globe with enhanced spectral efficiency, intelligent reflecting surfaces (IRS) integrated satellite-terrestrial communications is a topic of research interest in an infrastructure-deficient…

Signal Processing · Electrical Eng. & Systems 2024-01-02 Parvez Shaik , Kamal Kishore Garg , Praveen Kumar Singya , Vimal Bhatia , Mohamed-Slim Alouini

Terrestrial and satellite communication networks often rely on two-hop wireless architectures with an access channel followed by backhaul links. Examples include Cloud-Radio Access Networks (C-RAN) and Low-Earth Orbit (LEO) satellite…

Information Theory · Computer Science 2021-09-28 Rahif Kassab , Andrea Munari , Federico Clazzer , Osvaldo Simeone

The proliferation of intelligent transportation systems (ITS) has led to increasing demand for diverse network applications. However, conventional terrestrial access networks (TANs) are inadequate in accommodating various applications for…

Networking and Internet Architecture · Computer Science 2023-06-16 Sheikh Salman Hassan , Yu Min Park , Yan Kyaw Tun , Walid Saad , Zhu Han , Choong Seon Hong

Low Power Wide Area (LPWA) networks are known to be highly vulnerable to external in-band interference in terms of packet collisions which may substantially degrade the system performance. In order to enhance the performance in such cases,…

Information Theory · Computer Science 2020-09-14 Steven Kisseleff , Jakob Kneissl , Gerd Kilian , Wolfgang H. Gerstacker

Data Distribution Service (DDS) is an innovative approach towards communication in ICS/IoT infrastructure and robotics. Being based on the cross-platform and cross-language API to be applicable in any computerised device, it offers the…

Machine Learning · Computer Science 2021-06-15 Stanislav Abaimov

Satellite user terminals are a promising target for adversaries seeking to target satellite communication networks. Despite this, many protections commonly found in terrestrial routers are not present in some user terminals. As a case study…

Cryptography and Security · Computer Science 2023-03-09 Joshua Smailes , Edd Salkield , Sebastian Köhler , Simon Birnbach , Ivan Martinovic

Quantum key distribution (QKD) enables tap-proof exchange of cryptographic keys guaranteed by the very laws of physics. One of the last remaining roadblocks on the way towards widespread deployment of QKD is the high loss experienced during…

Quantum Physics · Physics 2022-10-06 Sebastian Ecker , Johannes Pseiner , Jorge Piris , Martin Bohmann