Results 31 to 40 of about 27,167 (293)

Theoretical Analysis of REM-Based Handover Algorithm for Heterogeneous Networks

IEEE Access, 2019
Handover has been a widely studied topic since the beginning of the mobile communications era, but with the advent of another generation, it is worth seeing it with fresh eyes.
Cristo Suarez-Rodriguez, Ying He, Eryk Dutkiewicz   +2 more
doaj   +1 more source

Performance of Cognitive Radio Systems with Imperfect Radio Environment Map Information [PDF]

2009 Australian Communications Theory Workshop, 2009
In this paper we describe the effect of imperfections in the radio environment map (REM) information on the performance of cognitive radio (CR) systems. Via simulations we explore the relationship between the required precision of the REM and various channel/system properties. For example, the degree of spatial correlation in the shadow fading is a key
Hanif, Muhammad Fainan, Smith, Peter J., Shafi, Mansoor   +2 more
openaire   +2 more sources

Galactic Star Formation with NIKA2 (GASTON): Evidence of mass accretion onto dense clumps [PDF]

EPJ Web of Conferences, 2022
High-mass stars (m* ≳ 8 M⊙) play a crucial role in the evolution of galaxies, and so it is imperative that we understand how they are formed. We have used the New IRAM KIDs Array 2 (NIKA2) camera on the Institut de Radio Astronomie Millimétrique (IRAM ...
Rigby A.J., Adam R., Ade P., Ajeddig H., Anderson M., André P., Artis E., Aussel H., Bacmann A., Beelen A., Benoît A., Berta S., Bing L., Bourrion O., Bracco A., Calvo M., Catalano A., De Petris M., Désert F.-X., Doyle S., Driessen E. F. C., García P., Gomez A., Goupy J., Kéruzoré F., Kramer C., Ladjelate B., Lagache G., Leclercq S., Lestrade J.-F., Macías-Pérez J.-F., Maury A., Mauskopf P., Mayet F., Monfardini A., Muñoz-Echeverría M., Peretto N., Perotto L., Pisano G., Ponthieu N., Revéret V., Ristorcelli I., Ritacco A., Romero C., Roussel H., Ruppin F., Schuster K., Shu S., Sievers A., Tucker C., Watkins E.J., Zylka R.   +51 more
doaj   +1 more source

Novel radio environment map for the ns-3 NR simulator [PDF]

Proceedings of the Workshop on ns-3, 2021
Grant numbers : S3_LLNL - Spectrum Sharing Simulator Program project.
Koutlia, Katerina, Bojovic, Biljana, Lagén Morancho, Sandra, Giupponi, Lorenza   +3 more
openaire   +2 more sources

DVB-T Channels Measurements for the Deployment of Outdoor REM Databases

Journal of Telecommunications and Information Technology, 2014
In this paper the analysis of the spectrum occupancy in the TV band is provided based on the outdoor measurements campaigns carried out in Poznań, Poland in 2013 and 2014. The goal of this work is to discuss the stability and other important features of
Adrian Kliks, Paweł Kryszkiewicz, Krzysztof Cichoń, Anna Umbert, Jordi Perez-Romero, Ferran Casadevall   +5 more
doaj   +1 more source

Electromagnetic Field Distribution Mapping: A Taxonomy and Comprehensive Review of Computational and Machine Learning Methods

Computers
Electromagnetic field (EMF) exposure mapping is increasingly important for ensuring compliance with safety regulations, supporting the deployment of next-generation wireless networks, and addressing public health concerns.
Yiannis Kiouvrekis, Theodor Panagiotakopoulos   +1 more
doaj   +1 more source

A mobile robot system following smartphone users using global following based on Wi-Fi and local following based on walking matching

Nihon Kikai Gakkai ronbunshu, 2020
This paper introduces a mobile robot system that follows a human target, in particular, a robot system designed to follow a smartphone user. The proposed system integrates a global following method based on Wi-Fi radio intensity maps and a local ...
Naomichi OTAKE, Kazuyuki MORIOKA
doaj   +1 more source

Reciprocal control of viral infection and phosphoinositide dynamics

FEBS Letters, EarlyView.
Phosphoinositides, although scarce, regulate key cellular processes, including membrane dynamics and signaling. Viruses exploit these lipids to support their entry, replication, assembly, and egress. The central role of phosphoinositides in infection highlights phosphoinositide metabolism as a promising antiviral target.
Marie Déborah Bancilhon, Bruno Mesmin
wiley   +1 more source

An upstream open reading frame regulates expression of the mitochondrial protein Slm35 and mitophagy flux

FEBS Letters, EarlyView.
This study reveals how the mitochondrial protein Slm35 is regulated in Saccharomyces cerevisiae. The authors identify stress‐responsive DNA elements and two upstream open reading frames (uORFs) in the 5′ untranslated region of SLM35. One uORF restricts translation, and its mutation increases Slm35 protein levels and mitophagy.
Hernán Romo‐Casanueva, Ariann E. Mendoza‐Martínez, P. Abril Medina‐Flores, Carlos Campero‐Basaldua, Alexander DeLuna, Soledad Funes   +5 more
wiley   +1 more source

Structural instability impairs function of the UDP‐xylose synthase 1 Ile181Asn variant associated with short‐stature genetic syndrome in humans

FEBS Letters, EarlyView.
The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li, Pedro A. Sánchez‐Murcia, Bernd Nidetzky   +2 more
wiley   +1 more source