Zobrazeno 1 - 10
of 11 633
pro vyhledávání: '"RADIO PROPAGATION"'
Publikováno v:
Geophysical Research Letters, Vol 51, Iss 15, Pp n/a-n/a (2024)
Abstract Powerful lightning strikes generate broadband electromagnetic signals. At Extremely Low Frequencies (ELF), the signal partly leaks into the ionosphere and produces whistlers that can be detected by satellites. Indeed, the satellites of the E
Externí odkaz:
https://doaj.org/article/da5311d12d5d469eba746b95ec497f85
Autor:
Giuliano Muratore, Davide Micheli, Domenico Arena, Alberto Galati, Simone Piacco, Roberto Verdone
Publikováno v:
IEEE Access, Vol 12, Pp 1-9 (2024)
In May 2023 the Emilia Romagna Italian region was plagued by floods, submerging lands and cities for days. In those critical days a massive georeferenced user’s cellular phone received power measurement campaign was activated on TIM (Telecom Italia
Externí odkaz:
https://doaj.org/article/fd70aec812cc4ecab669c84adfa8245b
Autor:
Michele Zhu, Lorenzo Cazzella, Francesco Linsalata, Maurizio Magarini, Matteo Matteucci, Umberto Spagnolini
Publikováno v:
IEEE Open Journal of the Communications Society, Vol 5, Pp 6291-6302 (2024)
Digital Twin has emerged as a promising paradigm for accurately representing wireless communication electromagnetic environments. The resulting virtual representation of reality facilitates comprehensive insights into the propagation environment, emp
Externí odkaz:
https://doaj.org/article/29e5494659454fe4965c2a6c83888f67
Autor:
Manjuladevi Vasudevan, Murat Yuksel
Publikováno v:
IEEE Open Journal of the Communications Society, Vol 5, Pp 5123-5153 (2024)
With recent advancements in the telecommunication industry and the deployment of 5G networks, radio propagation modeling is considered a fundamental task in planning and optimization. Accurate and efficient models of radio propagation enable the esti
Externí odkaz:
https://doaj.org/article/09513e166f6b4ad298275c90684134d8
Autor:
Nidal Qasem
Publikováno v:
IEEE Access, Vol 12, Pp 96660-96671 (2024)
Interest is rising in improving efficiency and productivity by increasing the received signal power, which is driven by the proliferation of wireless local area networks and the increasing use of portable computing devices such as laptops and PDAs. W
Externí odkaz:
https://doaj.org/article/e0d15e9dcc954c4d8827a3213eda1aaa
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
Publikováno v:
Telkomnika. Aug2018, Vol. 16 Issue 4, p1551-1559. 9p.
Publikováno v:
Atmosphere, Vol 15, Iss 11, p 1354 (2024)
The devastating effects of rain-induced attenuation on communication links operating above 10 GHz during rainy events can significantly degrade signal quality, leading to interruptions in service and reduced data throughput. Understanding the spatial
Externí odkaz:
https://doaj.org/article/9adf987b93774ec1a4ab454e691b13b4
Autor:
Hiromi Sejima, Keisuke Hosokawa, Hiroyuki Nakata, Jaroslav Chum, Chien-Hung Lin, Jia-Ting Lin
Publikováno v:
Earth, Planets and Space, Vol 75, Iss 1, Pp 1-11 (2023)
Abstract High-Frequency Doppler (HFD) sounders at low-latitudes often detect characteristic oblique spreading Doppler traces in the spectrogram, known as Oblique Spread Structure (OSS). OSS has been expected to be generated by the dispersion of radio
Externí odkaz:
https://doaj.org/article/96428fc374284b5c835b205fc1a598d8
Autor:
Keisuke Hosokawa, Susumu Saito, Hiroyuki Nakata, Chien-Hung Lin, Jia-Ting Lin, Pornchai Supnithi, Ichiro Tomizawa, Jun Sakai, Toru Takahashi, Takuya Tsugawa, Michi Nishioka, Mamoru Ishii
Publikováno v:
Earth, Planets and Space, Vol 75, Iss 1, Pp 1-15 (2023)
Abstract It has long been known that field-aligned irregularities within equatorial plasma bubbles (EPBs) can cause long-range propagation of radio waves in the VHF frequencies such as those used for TV broadcasting through the so-called forward scat
Externí odkaz:
https://doaj.org/article/ca1eb1e6096a4a52a3dbfcd66230f3f7