Zobrazeno 1 - 10
of 789
pro vyhledávání: '"Propagation models"'
Publikováno v:
IEEE Open Journal of Antennas and Propagation, Vol 5, Iss 1, Pp 225-237 (2024)
The path reduction factor (PRF), a key element of semi-empirical rain attenuation statistics prediction models, is investigated to shed some light on its value for links shorter than 1 km. PRF is here calculated from simulations underpinned by the us
Externí odkaz:
https://doaj.org/article/4bc2d5a71735424fa017c348d410cb73
Autor:
Valdemar Ramon Farre Guijarro, Jose David Vega Sanchez, Martha Cecilia Paredes Paredes, Felipe Grijalva Arevalo, Diana Pamela Moya Osorio
Publikováno v:
IEEE Access, Vol 12, Pp 5708-5730 (2024)
The 5th-Generation New Radio (5G-NR) network have been widely deployed around the world in the frequency range 1/range 2 bands. Once specific frequency bands within these ranges can vary across different countries and regions due to regulatory differ
Externí odkaz:
https://doaj.org/article/000d7873e5ab41069eaedcf5fb7a1815
Autor:
Tomasz Grasza
Publikováno v:
Biuletyn Wojskowej Akademii Technicznej, Vol 72, Iss 4, Pp 101-120 (2023)
The article is devoted to the assessment of attenuation in wireless links in various environmentalconditions. A simplified damping estimation methodology based on the Floating-intercept (FI) modelis presented [1]. The methodology used makes it possib
Externí odkaz:
https://doaj.org/article/280e25a868a34927bd025126d7b256d1
Publikováno v:
International Journal of Electronics and Telecommunications, Vol vol. 69, Iss No 4, Pp 733-744 (2023)
Externí odkaz:
https://doaj.org/article/089c33ea1cb849f0bc959157b9c3a501
Publikováno v:
Sensors, Vol 24, Iss 12, p 3877 (2024)
LoRa systems are emerging as a promising technology for wireless sensor networks due to their exceptional range and low power consumption. The successful deployment of LoRa networks relies on accurate propagation models to facilitate effective networ
Externí odkaz:
https://doaj.org/article/d15ac49052374486abe857b2b42b9d0b
Autor:
Brenda S. de S. Barbosa, Hugo A. O. Cruz, Alex S. Macedo, Caio M. M. Cardoso, Filipe C. Fernandes, Leslye E. C. Eras, Jasmine P. L. de Araújo, Gervásio P. S. Calvacante, Fabrício J. B. Barros
Publikováno v:
Sensors, Vol 24, Iss 8, p 2542 (2024)
The presence of green areas in urbanized cities is crucial to reduce the negative impacts of urbanization. However, these areas can influence the signal quality of IoT devices that use wireless communication, such as LoRa technology. Vegetation atten
Externí odkaz:
https://doaj.org/article/ead3c2db108345da8c54cecf4135aa05
Autor:
Achraf Cohen, Yazan A. Alqudah
Publikováno v:
EURASIP Journal on Advances in Signal Processing, Vol 2023, Iss 1, Pp 1-13 (2023)
Abstract To meet the ever-growing demand for higher data rates, accurate channel models are needed for optimal design and deployment of mobile wireless networks. This work proposes a new method for addressing path loss modeling at 800 MHz of suburban
Externí odkaz:
https://doaj.org/article/055ec2058f5f43709f8c452a5fe43081
Autor:
Alexis Barrios-Ulloa, Alejandro Cama-Pinto, Emiro De-la-Hoz-Franco, Raúl Ramírez-Velarde, Dora Cama-Pinto
Publikováno v:
Agriculture, Vol 13, Iss 11, p 2046 (2023)
Modeling radio signal propagation remains one of the most critical tasks in the planning of wireless communication systems, including wireless sensor networks (WSN). Despite the existence of a considerable number of propagation models, the studies ai
Externí odkaz:
https://doaj.org/article/041af3ee27f44e9b83f05fef96c510a7
Autor:
David Casillas-Perez, Daniel Merino-Perez, Silvia Jimenez-Fernandez, Jose A. Portilla-Figueras, Sancho Salcedo-Sanz
Publikováno v:
IEEE Access, Vol 10, Pp 75219-75233 (2022)
This paper proposes a robust non-linear generalized path-loss propagation model, the Extended Weighted ABG (EWABG), which efficiently allows generating a path-loss propagation model by combining several available path-loss datasets (from measurements
Externí odkaz:
https://doaj.org/article/663701dcd6754b88ac773b95d2f80521
Publikováno v:
IEEE Access, Vol 10, Pp 29183-29193 (2022)
Dual polarized printed multiple input multiple output (MIMO) antenna for Band 42 (3.4 - 3.6 GHz) with wave propagation models is presented. Polarization and spatial diversity are achieved by utilizing two printed bow-tie antennas in orthogonal orient
Externí odkaz:
https://doaj.org/article/0ae3bba5427b459882b9bb38ea5f66e7