Results 41 to 50 of about 313,766 (176)
International Journal of Satellite Communications and Networking, EarlyView.ABSTRACT As non‐terrestrial networks (NTNs) become integral to future 6G systems, ensuring seamless connectivity and service continuity over low Earth orbit (LEO) satellite constellations is essential. This work investigates the impact of open radio access network (RAN) functional splits on handover performance in NTNs, focusing on minimizing service ...
Siva Satya Sri Ganesh Seeram +3 more
wiley +1 more source
Millimeter-Wave Phased Arrays in Silicon [PDF]
, 2007 Integration of mm-wave multiple-antenna systems on silicon-based processes enables complex, low-cost systems for high-frequency communication and sensing applications.
Natarajan, Arun Sridhar
core +1 more source
IEEE Open Journal of Antennas and PropagationThis article analyzes the current development status and requirements of wireless communication technology, and proposes a multibeam MM-wave antenna array with high-isolation for in-band full duplex (IBFD) wireless integrated access and backhaul ...
Tong Wu +4 more
doaj +1 more source
Dual-Polarized Two-Dimensional Multibeam Antenna Array With Hybrid Beamforming and its Planarization
IEEE Access, 2021 A feeding network crossing method is proposed to form an N $\times $ N dual-polarized two-dimensional multibeam antenna array (2D-MBAA) with analog-digital hybrid beamforming, which solves the problem of needing additional connection structure between ...
Lin-Hui He +3 more
doaj +1 more source
SMTC Configuration and Window Adjustment Strategies for Beam Hopping in NR‐NTN
International Journal of Satellite Communications and Networking, EarlyView.ABSTRACT Beam hopping is an effective transmission strategy for nonterrestrial networks (NTNs), enabling satellites to allocate limited power and spectrum resources across different geographical regions over time. However, in NR‐based NTN systems, beam hopping complicates synchronization monitoring because synchronization signal block (SSB) arrivals ...
Hee Wook Kim, Kyungrak Lee, Joon Gyu Ryu
wiley +1 more source
Multibeam Transmitarrays for 5G Antenna Systems [PDF]
, 2018 In this paper, preliminary results on the feasibility of a multibeam antenna based on the use of a transmitarray are presented. A reduced size configuration has been properly designed and optimized, with the aim to minimize the degradation of the ...
Paola Pirinoli +3 more
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IEEE Access, 2021 An efficient aeronautical telecommunication network (ATN) is proposed in this article based on adaptive multibeam antenna arrays and high-altitude platforms (HAPs).
Yasser Albagory
doaj +1 more source
Boreas, EarlyView.Numerous studies have shown that during the Quaternary there were substantial fluctuations in sea level in response to glacial–interglacial climate variability, reaching lowstand positions up to 134 m below the present sea level (b.s.l.). These fluctuations have had a strong influence on the morphology of shallow shelf seas, which preserve evidence of ...
Ozren Hasan +7 more
wiley +1 more source
MODELING OF MULTIBEAM ANTENNAS FOR TELECOMMUNICATION SYSTEMS
Наука и техника, 2013 The paper considers possibilities pertaining to application of multibeam antennas for communication systems. Modeling of a pyramidal horn antenna and lattice has been carried out in the paper.
V. V. Muraviov +3 more
doaj
Restoration Ecology, EarlyView.Abstract Introduction Over 44% of European lakes fail to meet ecological quality standards, prompting substantial investment in lake restoration to achieve good ecological status. Unfortunately, effects are often short‐lived due to persistent internal phosphorus (P) loading and strong cyprinid‐driven bottom‐up control, which limits water quality ...
Emma Polauke +3 more
wiley +1 more source