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One of the major challenges in the medium access control (MAC) protocol design over cognitive Ad Hoc networks (CAHNs) is how to efficiently utilize multiple opportunistic channels, which vary dynamically and are subject to limited power…

Information Theory · Computer Science 2011-05-03 Yichen Wang , Pinyi Ren , Qinghe Du , Chao Zhang

In this work, we present a novel robust distributed beamforming (RDB) approach based on low-rank and cross-correlation techniques. The proposed RDB approach mitigates the effects of channel errors in wireless networks equipped with relays…

Signal Processing · Electrical Eng. & Systems 2019-12-04 H. Ruan , R. C. de Lamare

In fact, the broadcast nature of every transmitter makes it possible for other transceivers in the channel to overhear the broadcasted signal. The proposed idea in cooperative communication is to use these intermediate transceivers as relay…

Signal Processing · Electrical Eng. & Systems 2024-09-25 Ali Mehrban

The power grid is a critical infrastructure essential for public safety and welfare. As its reliance on digital technologies grows, so do its vulnerabilities to sophisticated cyber threats, which could severely disrupt operations. Effective…

Cryptography and Security · Computer Science 2024-12-10 Omer Sen , Bozhidar Ivanov , Christian Kloos , Christoph Zol_ , Philipp Lutat , Martin Henze , Andreas Ulbig

The continuous increase in performance requirements, for both scientific computation and industry, motivates the need of a powerful computing infrastructure. The Grid appeared as a solution for inexpensive execution of heavy applications in…

Distributed, Parallel, and Cluster Computing · Computer Science 2010-10-05 Anolan Milanés , Noemi Rodriguez , Bruno Schulze

In the wireless environment, dissemination techniques may improve data access for the users. In this paper, we show a description of dissemination architecture that fits the overall telecommunication network. This architecture is designed…

Networking and Internet Architecture · Computer Science 2010-07-15 Ahmad Saad Al-Mogren

This research presents a novel framework integrating Flexible-Duplex (FlexD) and Integrated Sensing and Communications (ISAC) technologies to address the challenges of spectrum efficiency and resource optimization in next-generation…

Signal Processing · Electrical Eng. & Systems 2025-04-08 Tharaka Perera , Saman Atapattu , Chathuranga Weeraddana , Jamie Evans

The study focuses on developing a digital twin testbed tailored for public safety technologies, incorporating simulated wireless communication within the digital world. The integration enables rapid analysis of signal strength, facilitating…

Computers and Society · Computer Science 2024-10-21 Alyssa Cassity , Hieu Le , Hernan Santos , Erik Priest , Jian Tao

Cooperative autonomous driving, which extends vehicle autonomy by enabling real-time collaboration between vehicles and smart roadside infrastructure, remains a challenging yet essential problem. However, none of the existing testbeds…

Robotics · Computer Science 2025-11-17 Hyunchul Bae , Eunjae Lee , Jehyeop Han , Minhee Kang , Jaehyeon Kim , Junggeun Seo , Minkyun Noh , Heejin Ahn

Ergodic capacity is an important performance measure associated with reliable communication at the highest rate at which information can be sent over the channel with a negligible probability of error. In the shadow of this definition,…

Information Theory · Computer Science 2012-07-10 Ferkan Yilmaz , Mohamed-Slim Alouini

We present a mixed analog-digital spectrum sensing method that is especially suited to the typical wideband setting of cognitive radio (CR). The advantages of our system with respect to current architectures are threefold. First, our analog…

Hardware Architecture · Computer Science 2010-09-08 Moshe Mishali , Yonina C. Eldar

Despite the conclusive potential of cognitive radio for provisioning the dynamic and flexible spectrum/channel allocation, the research community should study the performance gain of physical layer over such a radio with cognition…

Emerging Technologies · Computer Science 2013-02-12 Fotis Foukalas , Lazaros Merakos

The explosive demand for data has called for solution approaches that range from spectrally agile cognitive radios with novel spectrum sharing, to use of higher frequency spectrum as well as smaller and denser cell deployments with diverse…

Networking and Internet Architecture · Computer Science 2014-11-12 Ratnesh Kumbhkar , Narayan Mandayam , Ivan Seskar

Previous work on cooperative communications has concentrated primarily on the diversity benefits of such techniques. This paper, instead, considers the multiplexing benefits of cooperative communications. First, a new interpretation on the…

Information Theory · Computer Science 2009-03-16 Yijia , Fan , Chao Wang , H. Vincent Poor , John S. Thompson

In recent years several wireless communication standards have been developed and more are expected, each with different scope in terms of spatial coverage, radio access capabilities, and mobility support. Heterogeneous networks combine…

Networking and Internet Architecture · Computer Science 2011-05-10 Oliver Blume , Abigail Surtees , Ramon Aguero , Eranga Perera , Kostas Pentikousis

The recent attention towards research and development in cyber-physical energy systems has introduced the necessity of emerging multi-domain co-simulation tools. Different educational, research and industrial efforts have been set to tackle…

Other Computer Science · Computer Science 2018-11-19 Cornelius Steinbrink , Florian Schlögl , Davood Babazadeh , Sebastian Lehnhoff , Sebastian Rohjans , Anand Narajan

Mutual Coupling (MC) is an unavoidable feature in Reconfigurable Intelligent Surfaces (RISs) with sub-wavelength inter-element spacing. Its inherent presence naturally leads to non-local RIS structures, which can be efficiently described…

Information Theory · Computer Science 2024-04-09 Dilki Wijekoon , Amine Mezghani , George C. Alexandropoulos , Ekram Hossain

Connected and automated vehicles and robot swarms hold transformative potential for enhancing safety, efficiency, and sustainability in the transportation and manufacturing sectors. Extensive testing and validation of these technologies is…

This paper investigates the problem of distributed medium access control in a wireless multiple access network with an unknown finite number of homogeneous transmitters. An enhanced physical link layer interface is considered where each…

Information Theory · Computer Science 2018-11-28 Faeze Heydaryan , Yanru Tang , Jie Luo

Experimentation in practical, end-to-end (E2E) next-generation networks deployments is becoming increasingly prevalent and significant in the realm of modern networking and wireless communications research. The prevalence of…

Networking and Internet Architecture · Computer Science 2024-03-25 Ali Chouman , Dimitrios Michael Manias , Abdallah Shami