Results 61 to 70 of about 308,154 (181)
International Journal of Satellite Communications and Networking, EarlyView.ABSTRACT Low Earth Orbit (LEO) satellite constellations offer unprecedented opportunities for global broadband connectivity but pose significant beamforming challenges due to rapid platform motion and stringent onboard hardware constraints. Fully digital architectures, while optimal in theory, remain impractical for satellite payloads, motivating ...
Mohammad Momani +2 more
wiley +1 more source
Semi-blind adaptive beamforming for high-throughput quadrature amplitude modulation systems
, 2010 A semi-blind adaptive beamforming scheme is proposed for wireless systems that employ high-throughput quadrature amplitude modulation signalling. A minimum number of training symbols, equal to the number of receiver antenna arrays elements, are first ...
Sheng Chen +5 more
core +2 more sources
天地一体化信息网络, 2021 Due to the characteristics of low earth orbit (LEO) communication satellite system like low propagation loss, small propagation delay and high pointing accuracy, a hybrid architecture-“analog beamforming stage and digital beamforming (DBF) stage” was ...
Rong HU +6 more
doaj +2 more sources
International Journal of Satellite Communications and Networking, EarlyView.ABSTRACT In this paper, the correlation learning estimation and adaptive reduction (CLEAR) of interference, an adaptive, blind and transparent interference compensation method applied in a wideband dual‐channel receiver, is studied for a pair of independent satellite multi‐connectivity links, using the same carrier frequency and signal bandwidth in use
Svilen Dimitrov
wiley +1 more source
Polymer Composites, Volume 47, Issue 18, Page 16125-16154, 20 September 2026.Overview of the holistic engineering lifecycle and core research pillars for wind turbine blades. ABSTRACT This paper reviews recent advancements across the lifecycle of wind turbine blades, focusing on three interconnected areas: advanced composites, structural optimization, and machine learning (ML) diagnostics. In materials, we highlight progress in
Kemal Hasirci +2 more
wiley +1 more source
Remote SensingGlobal navigation satellite system (GNSS) array antenna receivers are widely used to suppress wideband interference in navigation countermeasures. However, existing array antenna receivers all adopt a digital array structure and digital beamforming ...
Zhenxing Xu +9 more
doaj +1 more source
Nanophotonics, Volume 15, Issue 17, 11 September 2026.This work constructs a radio‐frequency front‐end‐free hybrid code‐division and space‐division‐multiplexing wireless communication system built on programmable space‐time‐coding metasurfaces. Orthogonal pseudo‐random codes reliably separate overlapped multistream signals that share identical frequency, time, and spatial resources.
Yuzhen Chen +3 more
wiley +1 more source
EntropyMillimeter-wave (mmWave) communication systems leverage the directional beamforming capabilities of antenna arrays equipped at the base stations (BS) to counteract the inherent high propagation path loss characteristic of mmWave channels.
Lou Zhao +3 more
doaj +1 more source
Nanophotonics, Volume 15, Issue 17, 11 September 2026.We demonstrate a VO2‐based transmissive reconfigurable intelligent surface for indoor millimeter‐wave communication. The TRIS replaces conventional PIN and varactor diodes with geometrically tailored VO2 switches, enabling transmitted phase control through phase‐transition‐based switching.
Junghyeon Kim +3 more
wiley +1 more source
Beamforming method: suppression of spatial aliasing using moving arrays
, 2008 In the scientific and industrial community a growing interest is nowadays devoted to sound source localization techniques. Among all the existing methods, the use of the beamforming algorithm in sound source localization problems is increasing, thanks ...
LURATI M. +3 more
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