User Random Access Technology Based on Beam Hopping Satellite Communication System
天地一体化信息网络, 2022 On the basis of geosynchronous earth orbit multi-beam satellite communication systems, this paper designed the process of user random access to the network and specifi c signaling interaction under the agile beam mechanism, and proposed the scheduling ...
Zixuan HUANG +3 more
doaj +2 more sources
History of the Hopping family in England and genealogy of the John Hopping family in America /
, 1952 Includes indexes.Supplement by L. M.
Hopping, Louis M., 1900- +1 more
core
Dual‐State Programmable Oxide Transistor for Time‐Based Cryptography
Advanced Materials, EarlyView.A DUPOT enables independently tunable Vth and Isat depending on gate bias polarity, producing three‐dimensional dynamical behavior within a transfer characteristic. This behavior originates from charge trapping and oxygen‐ion migration in the HfO2 layer.
Huisu Noh +9 more
wiley +1 more source
Multistage Frequency-Hopping Assisted Ultra-Wideband Multiple-Access Communications
, 2002 Ultra-WideBand (UWB) systems having a bandwidth on the order of a Gigahertz have recently received wide attention both in the USA and in Europe. In this contribution a novel UWB multiple access scheme based on the well-known family of Frequency-Hopping ...
Yang, L-L, Hanzo, L
core +1 more source
Advanced Materials, EarlyView.Spin‐selective hot‐carrier transfer across CrSBr/WSe2/CrSBr interfaces couples the continuously tunable magnetic configuration of antiferromagnetic CrSBr to the valley degrees of freedom of monolayer WSe2, enabling giant nonequilibrium valley control and magnetic‐state‐dependent reversal of circularly polarized emission.
Ke Xiao +7 more
wiley +1 more source
Resource Allocation for Beam-Hopping-Based Satellite Systems With Spectrum Sharing
IEEE AccessWith the dense deployment of the satellite constellations, spectrum sharing among multiple satellite communication systems is a feasible way to alleviate the scarcity of spectrum resources.
Mengying Zhang, Xiumei Yang, Zhiyong Bu
doaj +1 more source
Beam-hopping over-the-air tests using DVB-S2X super-framing
, 2022 7 S.The beam-hopping transmission concept has recently received a lot of attention due to a new level of flexibility to accommodate dynamic traffic profiles by employing the latest satellite technology.
Feltrin, E. +7 more
core +1 more source
Wood‐Derived Nanocellulose‐Biocarbon Fresnel‐Zone Plate Lenses for Sub‐THz Frequency Applications
Advanced Materials Technologies, EarlyView.Wood‐derived nanocellulose and lignin‐based biocarbon were combined to fabricate fully bio‐based Fresnel zone plate (FZP) lenses for sub‐terahertz frequencies. These sustainable FZP lenses exhibit low dielectric loss and high directivity, achieving performance comparable to that of metallic references, and remain functional under environmental stress ...
Riikka Haataja +9 more
wiley +1 more source
Deep Reinforcement Learning‐Based Beam Hopping Scheduling Algorithm for Satellite Internet System
Electronics LettersSatellite internet is a new network system that combines satellite communication and internet technology. The main space‐based infrastructure of satellite internet is a low‐Earth‐orbit (LEO) satellite constellation.
Dong Zhang +4 more
semanticscholar +1 more source
Nonlocomotory Robotic Strategies for Dynamic Rotation Control in Terrestrial Robots: A Review
Advanced Robotics Research, EarlyView.Terrestrial robots increasingly require rapid body rotation to maintain stability and agility in complex environments. This review shows nonlocomotory rotational control strategies that operate without ground contact, including reaction wheels, tails, bars, limbs, and thrusters.
Y. Liang +14 more
wiley +1 more source