Results 51 to 60 of about 11,108 (198)

Multipath channels of unbounded capacity [PDF]

2008 IEEE 25th Convention of Electrical and Electronics Engineers in Israel, 2008
The capacity of discrete-time, non-coherent, multipath fading channels is considered. It is shown that if the delay spread is large in the sense that the variances of the path gains do not decay faster than geometrically, then capacity is bounded in the signal-to-noise ratio.
Tobias Koch 0001, Amos Lapidoth
openaire   +4 more sources

Directive Antenna Clutter Loss in Slant Paths

International Journal of Satellite Communications and Networking, EarlyView.
ABSTRACT This paper investigates the development of a clutter loss model specifically for slant paths involving directive antennas. Conventionally, clutter loss is characterized by using isotropic antennas to facilitate standard link budget calculations via single antenna gain values.
Fernando Pérez Fontán, Vicente Pastoriza‐Santos, Fernando Machado Domı́nguez, Thomas Prechtl, Pavel Pechac   +4 more
wiley   +1 more source

Modified RTK-GNSS for Challenging Environments

Sensors
Real-Time Kinematic Global Navigation Satellite System (RTK-GNSS) is currently the premier technique for achieving centimeter-level accuracy quickly and easily.
Ellarizza Fredeluces, Tomohiro Ozeki, Nobuaki Kubo, Ahmed El-Mowafy   +3 more
doaj   +1 more source

Integrating Image Segmentation and Deep Learning to Improve Radio Frequency Propagation Models

International Journal of Satellite Communications and Networking, EarlyView.
ABSTRACT This paper proposes a multi‐sensor approach to improve radio frequency (RF) propagation models, which play a key role in the rapidly expanding field of connected vehicle technology. Focusing on the 1‐ to 20‐GHz frequency range, which is critical for both satellite‐to‐vehicle and base station‐to‐vehicle communications, our study introduces a ...
Jonathan Israel, Xavier Boulanger, Vegard Arneson   +2 more
wiley   +1 more source

Measurement-based multipath multicast [PDF]

Proceedings IEEE 24th Annual Joint Conference of the IEEE Computer and Communications Societies., 2005
We propose a measurement-based routing algorithm to load balance intradomain traffic along multiple paths for multiple multicast sources. Multiple paths are established using application-layer overlaying. The proposed algorithm is able to converge under different network models, where each model reflects a different set of assumptions about the ...
Tuna Güven, Richard J. La, Mark A. Shayman, Bobby Bhattacharjee   +3 more
openaire   +1 more source

Possible impact of construction activities around a permanent GNSS station – A time series analysis

Journal of Geodetic Science
In this article, we address the potential effects of construction activities around a permanent Global Navigation Satellite System (GNSS) station. The study is based on a consistent time series of GNSS observations collected over a span of almost 13 ...
Aarnes Per Helge, Øvstedal Ola, Rost Christian   +2 more
doaj   +1 more source

The Evolution of Breast Cancer Detection: A Review of Imaging, Machine Learning, and Multimodal Strategies

Computational and Systems Oncology, Volume 6, Issue 1, December 2026.
ABSTRACT Breast cancer is still a serious problem in the world arena, where its early and prompt detection is the most important factor in improving patient prognosis and survival. The use of traditional diagnostic techniques, such as imaging (e.g., mammography and ultrasound) and subsequent histopathological examination, is the mainstay, which ...
Likhon Chandra Sarkar, Farida Siddiqi Prity, Farhad Hussain, Anup Talukder, Mirza Raquib, Sharmina Rahman, MD Jiabul Hoque   +6 more
wiley   +1 more source

PŘESNOST SATELITNÍHO NAVIGAČNÍHO SYSTÉMU GPS A JEHO DOSTUPNOST V KRITICKÝCH PODMÍNKÁCH

Perner’s Contacts, 2009
Článek se zabývá přesností určování polohy pomocí satelitů označovaných zkratkou GNSS (Global Navigation Satellite Systems). Obecně popisuje princip činnosti těchto systémů, podává souhrnnou informaci o příčinách chyb při určování polohy prostřednictvím
Josef Marek
doaj  

Genome–phenome association prediction using weighted deep matrix factorization with a multisource graph attention network

Quantitative Biology, Volume 14, Issue 3, September 2026.
Abstract Genome–phenome association (GPA) prediction can broaden the understanding of biological mechanisms underlying complex phenotypic traits (e.g., diseases and agronomic traits). Traditional deep matrix factorization (DMF)‐based GPA methods can integrate multiple data types and uncover nonlinear associations but often rely on low‐dimensional ...
Ran Duan, Wei Cao, Maozu Guo, Le Tian, Lingling Zhao   +4 more
wiley   +1 more source

Integrated LEO Constellation and In‐Cabin Distribution System for Continuous Aircraft 5G Connectivity

International Journal of Satellite Communications and Networking, Volume 44, Issue 5, Page 594-606, September/October 2026.
ABSTRACT The integration of low Earth orbit (LEO) satellite constellations with commercial aircraft communication systems presents critical challenges in maintaining continuous connectivity during dynamic flight conditions. Current geostationary satellite systems suffer from high round‐trip latency ( > 500 ms) and inadequate coverage at high latitudes,
Raúl Parada, Victor Monzon Baeza, Carlos Horcajo Fernández de Gamboa, Rocío Serrano Camacho, Carlos Monzo   +4 more
wiley   +1 more source