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In recent years, a large number of smart devices will be connected in Internet of Things (IoT) using an ad hoc network, which needs more frequency spectra. The cognitive radio (CR) technology can improve spectrum utilization in an…

Networking and Internet Architecture · Computer Science 2020-03-27 Xiaoxiong Zhong , Li Li , Yuanping Zhang , Bin Zhang , Weizhe Zhang , Tingting Yang

Miniaturization and portability of new electronics lead up to wearable devices embedded within garments: a European program called ProeTEX developed multi-purpose sensors integrated within emergency operators' garments in order to monitor…

Other Computer Science · Computer Science 2011-03-01 Matteo Lanati , Davide Curone , Emanuele Lindo Secco , Giovanni Magenes , Paolo Gamba

Telecommunications and computer vision have evolved separately so far. Yet, with the shift to sub-terahertz (sub-THz) and terahertz (THz) radio communications, there is an opportunity to explore computer vision technologies together with…

Networking and Internet Architecture · Computer Science 2024-04-15 Filipe B. Teixeira , Manuel Ricardo , André Coelho , Hélder P. Oliveira , Paula Viana , Nuno Paulino , Helder Fontes , Paulo Marques , Rui Campos , Luis M. Pessoa

Cosmic ray studies, in particular UHECR, can be in general supported by a directional, easy deployable, simple and robust detector. The design of this detector is based on the time of flight between two parallel tiles of scintillator, to…

Astrophysics · Physics 2008-11-26 M. Iori , A. Sergi

We describe the first instrument of a Cosmic Microwave Background experiment for mapping cosmological structures on medium angular scales (the COSMOSOMAS experiment) and diffuse Galactic emission. The instrument is located at Teide…

The Solar TErrestrial RElations Observatory (STEREO) and its heliospheric imagers (HI) have provided us the possibility to enhance our understanding of the interplanetary propagation of coronal mass ejections (CMEs). HI-based methods are…

Solar and Stellar Astrophysics · Physics 2018-11-14 T. Amerstorfer , C. Möstl , P. Hess , M. Temmer , M. L. Mays , M. Reiss , P. Lowrance , Ph. -A. Bourdin

Cosmic Rays (CRs) propagating through dense molecular clouds (MCs) produce gamma rays which carry direct information about the CR distribution throughout the Galaxy. Observations of gamma rays in different energy bands allow exploration of…

High Energy Astrophysical Phenomena · Physics 2022-03-14 Giada Peron , Felix Aharonian

The question of whether intelligent life exists elsewhere is one of the fundamental unknowns about our Universe. Over the past decade more than 200 extra-solar planets have been discovered, providing new urgency for addressing this question…

Astrophysics · Physics 2010-10-27 Abraham Loeb , Matias Zaldarriaga

We explore the sensitivity offered by a global network of cosmic ray detectors to a novel, unobserved phenomena: widely separated simultaneous extended air showers. Existing localized observatories work independently to observe individual…

High Energy Astrophysical Phenomena · Physics 2023-08-30 Eric Albin , Daniel Whiteson

The past decade has seen the rise of various radio astronomy arrays, particularly for low-frequency observations below 100MHz. These developments have been primarily driven by interesting and fundamental scientific questions, such as…

Instrumentation and Methods for Astrophysics · Physics 2016-01-28 Raj Thilak Rajan , Albert-Jan Boonstra , Mark Bentum , Marc Klein-Wolt , Frederik Belien , Michel Arts , Noah Saks , Alle-Jan van der Veen

GRANDProto300 (GP300) is a prototype array of the GRAND experiment, designed to validate the technique of autonomous radio-detection of astroparticles by detecting cosmic rays with energies between 10$^{17}$-10$^{18.5}$ eV. This observation…

Instrumentation and Methods for Astrophysics · Physics 2025-09-03 Jolan Lavoisier , Xishui Tian , Kumiko Kotera , Takashi Sako , Hanrui Wang , Mauricio Bustamante

Powered by renewable energy sources, cellular communication systems usually have different wireless traffic loads and available resources over time. To match their traffics, it is beneficial for two neighboring systems to cooperate in…

Information Theory · Computer Science 2016-11-17 Yinghao Guo , Jie Xu , Lingjie Duan , Rui Zhang

The gamma-ray sky from several hundred keV to $\sim$ a hundred MeV has remained largely unexplored due to the challenging nature of detecting gamma rays in this regime. At lower energies, Compton scattering is the dominant interaction…

Instrumentation and Methods for Astrophysics · Physics 2019-02-26 Sean Griffin , the AMEGO Team

The EXperiment for Cryogenic Large-Aperture Intensity Mapping (EXCLAIM) is a balloon-borne cryogenic telescope that will survey the spectrum of diffuse emission from both the Milky Way and the cosmic web to probe star formation, the…

Wireless distributed sensor network consists of randomly deployed sensors having low energy assets. These networks can be used for monitoring a variety of environments. Major problems of these networks are energy constraints and their…

Networking and Internet Architecture · Computer Science 2016-11-17 N. Amjad , N. Javaid , A. Haider , A. A. Awan , M. Rahman

Research in non-perturbative QED in strong-field backgrounds has gained interest in recent years, due to advances in high-intensity laser technologies that make extreme fields accessible in the laboratory. One key signature of strong-field…

With the advent of the nanosat/cubesat revolution, new opportunities have appeared to develop and launch small ($\sim$\ts 1000 cm$^3$), low-cost ($\sim$\ts US\$ 1M) experiments in space in very short timeframes ($\sim$ 2\ts years). In the…

Instrumentation and Methods for Astrophysics · Physics 2020-02-26 J. Braga , O. S. C. Durao , M. Castro , F. D'Amico , Pe. E. Stecchini , S. Amirabile , F. Gonzalez Blanco , C. Strauss , W. Silva , V. R. Schad , L. A. Reitano

Non-linear detection schemes can substantially improve the achievable throughput and connectivity capabilities of uplink MU-MIMO systems that employ linear detection. However, the complexity requirements of existing non-linear soft…

Signal Processing · Electrical Eng. & Systems 2024-09-25 Chathura Jayawardena , Konstantinos Nikitopoulos

Radio telescope arrays, such as Square Kilometre Array (SKA) and next-generation Very Large Array (ngVLA), require highly precise synchronization of time-frequency references to ensure high-quality observational data. Fiber-based frequency…

Instrumentation and Methods for Astrophysics · Physics 2025-03-04 Hongfei Dai , Wenlin Li , Zhongwang Pang , Chunyi Li , Dongqi Song , Tong Ww , Bo Wang

Next-generation gravitational-wave detectors like the Einstein Telescope and Cosmic Explorer, currently in their preparatory phase, have the potential to significantly improve our understanding of astrophysics, cosmology and fundamental…

General Relativity and Quantum Cosmology · Physics 2025-01-23 Michael Ebersold , Tania Regimbau , Nelson Christensen