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Backscatter communication (BSC) is a promising solution for Internet-of-Things (IoT) connections due to its low-complexity, low-cost, and energy-efficient solution for sensors. There are several network infrastructure setups that can be…

Signal Processing · Electrical Eng. & Systems 2023-07-04 Ahmet Kaplan , Joao Vieira , Erik G. Larsson

To mitigate spoofing attacks targeting global navigation satellite systems (GNSS) receivers, one promising method is to rely on alternative time sources, such as network-based synchronization, in order to detect clock offset discrepancies…

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

Stochastic gradient descent (SGD) is a well known method for regression and classification tasks. However, it is an inherently sequential algorithm at each step, the processing of the current example depends on the parameters learned from…

Machine Learning · Computer Science 2017-05-24 Saeed Maleki , Madanlal Musuvathi , Todd Mytkowicz

Photonic quantum technology requires precise, time-resolved identification of photodetection events. In distributed quantum networks with spatially separated and drifting time references, achieving high precision is particularly…

Quantum Physics · Physics 2023-10-23 Christopher Spiess , Fabian Steinlechner

Symbiotic radio (SR) is emerging as a spectrum- and energy-efficient communication paradigm for future passive Internet-of-things (IoT), where some single-antenna backscatter devices, referred to as Tags, are parasitic in an active primary…

Information Theory · Computer Science 2020-06-25 Xihan Chen , Hei Victor Cheng , Kaiming Shen , An Liu , Min-Jian Zhao

In distributed massive multiple-input multiple-output (MIMO) systems, multiple geographically separated access points (APs) communicate simultaneously with a user, leveraging the benefits of multi-antenna coherent MIMO processing and…

Information Theory · Computer Science 2023-11-21 Unnikrishnan Kunnath Ganesan , Rimalapudi Sarvendranath , Erik G. Larsson

5G NR is touted to be an attractive candidate for tactical networks owing to its versatility, scalability, and low cost. However, tactical networks need to be stealthy, where an adversary is not able to detect or intercept the tactical…

Signal Processing · Electrical Eng. & Systems 2024-06-17 Karthik Upadhya , Akshay Jain , Mikko A. Uusitalo , Harish Viswanathan

Digital Video Broadcasting Satellite, Second Generation and its extension DVBS2X are widely used in modern satellite communications, where synchronization relies on physical layer headers, pilot symbols, and optional superframe structures…

Signal Processing · Electrical Eng. & Systems 2026-04-10 Wahab Khawaja , Nestor J Hernandez Marcano , Rune Hylsberg Jacobsen

Reliable geolocation of non-cooperative emitters in environments where Global Navigation Satellite Systems (GNSS) are unavailable or degraded is a key enabler for spectrum regulation, emergency response, autonomous mobility, and Integrated…

Signal Processing · Electrical Eng. & Systems 2026-04-17 Rafal Szczepanik

Secure ranging is poised to play a critical role in several emerging applications such as self-driving cars, unmanned aerial systems, wireless IoT devices, and augmented reality. In this paper, we propose a design of a secure broadcast…

Cryptography and Security · Computer Science 2020-10-28 Tien D. Vo-Huu , Triet D. Vo-Huu , Guevara Noubir

This study investigates the problem of communication for a network composed of two half-duplex parallel relays with additive white Gaussian noise. Two protocols, i.e., \emph{Simultaneous} and \emph{Successive} relaying, associated with two…

Information Theory · Computer Science 2016-11-17 Seyed Saeed Changiz Rezaei , Shahab Oveis Gharan , Amir K. Khandani

Accurate and fast-convergent time synchronization is very important for wireless sensor networks. The flooding time synchronization converges fast, but its transmission delay and by-hop error accumulation seriously reduce the…

Systems and Control · Electrical Eng. & Systems 2022-08-02 Fanrong Shi , Xianguo Tuo , Simon X. Yang , Jing Lu , Huailiang Li

Distributed desynchronization algorithms are key to wireless sensor networks as they allow for medium access control in a decentralized manner. In this paper, we view desynchronization primitives as iterative methods that solve optimization…

Systems and Control · Computer Science 2016-11-18 Nikos Deligiannis , Joao F. C. Mota , George Smart , Yiannis Andreopoulos

Consensus-based decentralized stochastic gradient descent (D-SGD) is a widely adopted algorithm for decentralized training of machine learning models across networked agents. A crucial part of D-SGD is the consensus-based model averaging,…

Information Theory · Computer Science 2025-02-12 Daniel Pérez Herrera , Zheng Chen , Erik G. Larsson

Self-sustainable communications based on advanced energy harvesting technologies have been under rapid development, which facilitate autonomous operation and energy-efficient transmission. Recently, ambient backscattering that leverages…

Networking and Internet Architecture · Computer Science 2017-09-22 Xiao Lu , Hai Jiang , Dusit Niyato , Dong In Kim , Ping Wang

This paper investigates a novel intelligent reflecting surface (IRS)-based symbiotic radio (SR) system architecture consisting of a transmitter, an IRS, and an information receiver (IR). The primary transmitter communicates with the IR and…

Information Theory · Computer Science 2022-02-09 Meng Hua , Qingqing Wu , Luxi Yang , Robert Schober , H. Vincent Poor

Accurate positioning is paramount for a wide array of location-based services (LBS) in fifth-generation (5G) wireless networks. Recent advances in 5G New Radio (NR) technology holds promise for very high-precision positioning services. Yet,…

Optimization and Control · Mathematics 2024-09-10 Ti Ti Nguyen , Kim-Khoa Nguyen

This paper introduces a scheme for drone surveillance coordinated with the fifth generation (5G) synchronization signal block (SSB) cell-search procedure to simultaneously detect low-altitude drones within a volumetric surveillance grid.…

Signal Processing · Electrical Eng. & Systems 2026-01-14 Palatip Jopanya , Diana P. M. Osorio , Erik G. Larsson

In decentralized optimization over networks, synchronizing the updates of all nodes incurs significant communication overhead. For this reason, much of the recent literature has focused on the analysis and design of asynchronous…

Optimization and Control · Mathematics 2025-04-29 Marina Costantini , Nikolaos Liakopoulos , Panayotis Mertikopoulos , Thrasyvoulos Spyropoulos

The success of Internet-of-Things (IoT) paradigm relies on, among other things, developing energy-efficient communication techniques that can enable information exchange among billions of battery-operated IoT devices. With its technological…

Information Theory · Computer Science 2018-04-26 J. Kartheek Devineni , Harpreet S. Dhillon
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