Zobrazeno 1 - 10
of 1 023
pro vyhledávání: '"HAPS"'
Publikováno v:
IEEE Access, Vol 12, Pp 55506-55520 (2024)
High-altitude platform stations (HAPSs) that provide direct communication services to smartphones on the ground are garnering significant attention as innovative mobile communication platforms suitable for ultrawide coverage areas. The deployment of
Externí odkaz:
https://doaj.org/article/0f13f8b4107b420588b119954688cc96
Akademický článek
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Publikováno v:
IEEE Photonics Journal, Vol 16, Iss 5, Pp 1-14 (2024)
In this paper, we look into the modeling of free space optical channel and design of the HAP-based wireless optical networks. For vertical beam propagation, the pressure and temperature gradients alter with height. Microscale variations in refractivi
Externí odkaz:
https://doaj.org/article/dc012c415f4c4a0896c763d39b9b0826
Publikováno v:
IEEE Open Journal of the Communications Society, Vol 5, Pp 4613-4673 (2024)
Space-Air-Ground Integrated Networks (SAGINs), which incorporate space and aerial networks with terrestrial wireless systems, are vital enablers of the emerging sixth-generation (6G) wireless networks. They offer significant benefits, including exten
Externí odkaz:
https://doaj.org/article/4ac40b3b15ff4f389f0796ea85201b7b
Autor:
Baha Eddine Youcef Belmekki, Abdulah Jeza Aljohani, Saud A. Althubaity, Abdulhadi Al Harthi, Kevin Bean, Adnan Aijaz, Mohamed-Slim Alouini
Publikováno v:
IEEE Open Journal of the Communications Society, Vol 5, Pp 1916-1936 (2024)
The concept of the smart city relies on connectivity and is expected to revolutionize urban living and create sustainable cities. However, while smart cities continue to evolve, small towns, suburbs, and villages lack basic communication infrastructu
Externí odkaz:
https://doaj.org/article/19181caca73149d4b960a241582aca73
Publikováno v:
IEEE Open Journal of the Communications Society, Vol 5, Pp 1-14 (2024)
In this paper, we devise a deep SARSA reinforcement learning (DSRL) user scheduling algorithm for a base station (BS) that uses a high-altitude platform station (HAPS) as a backup to serve multiple users in a wireless cellular network. Considering a
Externí odkaz:
https://doaj.org/article/0879734da3b0410197f2a89aed401d58
Publikováno v:
Future Internet, Vol 16, Iss 9, p 332 (2024)
There is a growing interest in high-altitude platform stations (HAPSs) as potential telecommunication infrastructures in the stratosphere, providing direct communication services to ground-based smartphones. Enhanced coverage and capacity can be real
Externí odkaz:
https://doaj.org/article/41f8e85341f1437687eb3a0fa37deb90
Autor:
Yuta Furuse, Gia Khanh Tran
Publikováno v:
Sensors, Vol 24, Iss 17, p 5803 (2024)
Currently, there is a system in Japan to detect illegal radio transmitting sources, known as the DEURAS system. Even though crackdowns on illegal radio stations are conducted on a regular basis every year, the number of illegal emission cases still t
Externí odkaz:
https://doaj.org/article/bbf13ed235ae4b9cbd559f1934718c7d
Publikováno v:
Pharmaceutics, Vol 16, Iss 4, p 557 (2024)
Hypoxia is a significant feature of solid tumors and frequently poses a challenge to the effectiveness of tumor-targeted chemotherapeutics, thereby limiting their anticancer activity. Hypoxia-activated prodrugs represent a class of bio-reductive agen
Externí odkaz:
https://doaj.org/article/bb0ef91a1b034fda8c28263a19138fe9
Publikováno v:
IEEE Open Journal of the Communications Society, Vol 4, Pp 226-238 (2023)
The global averaged civilian positioning accuracy is still at meter level for all existing Global Navigation Satellite Systems (GNSSs), and the performance is even worse in urban areas. At lower altitudes than satellites, high altitude platform stati
Externí odkaz:
https://doaj.org/article/d518cbe76d1442eba2071c173c5ca60b