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Low‐Complexity Hybrid Beamforming for LEO Satellites: Beam Update Rate Analysis and Advanced Adaptive Precoding

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, Thomas Delamotte, Andreas Knopp +2 more
wiley +1 more source

Adaptive Transmitter Optimization in Multiuser Multiantenna Systems: Theoretical Limits, Effect of Delays, and Performance Enhancements

EURASIP Journal on Wireless Communications and Networking, 2005
The advances in programmable and reconfigurable radios have rendered feasible transmitter optimization schemes that can greatly improve the performance of multiple-antenna multiuser systems.
Samardzija Dragan, Mandayam Narayan, Chizhik Dmitry +2 more
doaj +2 more sources

Multiuser Space–Time Line Code With Optimal and Suboptimal Power Allocation Methods

IEEE Access, 2018
In this paper, a multiuser space-time line code (STLC) system is proposed. In the proposed multiuser STLC system, a zero-forcing (ZF)-based precoder decomposes multiuser multiple-input multiple-output (MIMO) channels into multiple single-user MIMO ...
Jingon Joung, Eui-Rim Jeong
doaj +1 more source

Generic Deep Learning-Based Linear Detectors for MIMO Systems Over Correlated Noise Environments

IEEE Access, 2020
To support the and development and application of the fifth-generation (5G) communication and internet of things (IoT) networks, high data-rate wireless transmission is required. To meet the demand of high data-rate, multiple antennas are equipped at the
Ke He +5 more
doaj +1 more source

Laser‐Direct Printed 2D Material‐Based Heterostructure for the Fabrication of Electronic Devices

Small, EarlyView.
The Digital Laser‐Induced Forward Transfer (LIFT) approach is employed to pattern and stack 2D materials with micrometer‐scale precision. PdSe2 and MoSe2 are assembled into vertical p–n junctions, with graphene serving as a transparent electrode. The resulting laser‐transferred heterostructures exhibit high material quality and stable rectifying ...
Ilias Cheliotis +12 more
wiley +1 more source

Peri‐operative glucagon‐like peptide‐1 receptor agonist use and outcomes: a national prospective multicentre cohort study

Anaesthesia, EarlyView.
Summary Introduction Peri‐operative glucagon‐like peptide‐1 receptor agonist (GLP‐1 RA) use is associated with delayed gastric emptying. It is unclear what proportion of patients having anaesthetic care are receiving GLP‐1 RAs; what strategies are used in their peri‐operative management; and whether the incidence of pulmonary aspiration and/or ...
Thomas E. Potter +862 more
wiley +1 more source

VQ‐Style: Disentangling Style and Content in Motion with Residual Quantized Representations

Computer Graphics Forum, EarlyView.
Abstract Human motion data is inherently rich and complex, containing both semantic content and subtle stylistic features that are challenging to model. We propose a novel method for effective disentanglement of the style and content in human motion data to facilitate style transfer.
Fatemeh Zargarbashi +5 more
wiley +1 more source

Low Complexity ZF Receiver Design for Multi-User GFDMA Uplink Systems

IEEE Access, 2018
This paper presents a low complexity receiver for multi-user uplink transmission using generalized frequency division multiplexing (GFDM). By exploiting the frequency spreading filter in the GFDM, the banded and circulant properties of the frequency ...
Hong Wang, Rongfang Song
doaj +1 more source

Persistent in vitro nociceptor hyperexcitability and axonal retraction produced by repeated paclitaxel doses

The FEBS Journal, EarlyView.
Repeated paclitaxel exposure causes long‐lasting nociceptor hyperexcitability and axonal retraction in adult sensory neurons. Using a long‐term primary nociceptor culture, we show that hyperexcitability is mediated by sequential upregulation of NaV1.8, TRPV1, TRPA1, and TRPM8 channels.
Angela Lamberti +3 more
wiley +1 more source

Frequency-Domain Interpolation of the Zero-Forcing Matrix in Massive MIMO-OFDM [PDF]

, 2016
We consider massive multiple input multiple output (MIMO) systems with orthogonal frequency division multiplexing (OFDM) that use zero-forcing (ZF) to combat interference. To perform ZF, large dimensional pseudo-inverses have to be computed.
Kashyap, Salil, +11 more
core +1 more source

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