Results 51 to 60 of about 323,225 (210)
An Efficient Interference-Aware Constrained Massive MIMO Beamforming for mm-Wave JSDM
IEEE Access, 2021 Low-complexity beamformer design with practical constraints is an attractive research area for hybrid analog/digital systems in mm-wave massive multiple-input multiple-output (MIMO).
Murat Bayraktar, Gokhan M. Guvensen
doaj +1 more source
Recent Advances in Programmable Metasurfaces and Meta‐Devices
Advanced Electronic Materials, EarlyView.Programmable metasurfaces enable various novel functionalities by dynamically tuning electromagnetic wavefronts. This article provides a comprehensive review of recent advances in microwave and terahertz programmable metasurfaces, covering electrical, thermal, optical, and mechanical control mechanisms.
Linda Shao +4 more
wiley +1 more source
IEEE Access, 2019 Recently, the non-orthogonal multiple access (NOMA) scheme has been applied in millimeter-wave (mmWave) communication system to support more users and further improve the performance.
Xiangbin Yu +3 more
doaj +1 more source
Autonomous Charging and Battery Swapping for Unmanned Aerial Vehicles: A Review
Advanced Intelligent Systems, EarlyView.This review evaluates major autonomous charging and battery swapping methods for unmanned aerial vehicles (UAVs) against a single question: how close each is to sustained unattended operation. Rather than ranking them by charging performance, it identifies the limitation that most restricts each method, and briefly outlines the supporting technologies ...
Zelin Wu +5 more
wiley +1 more source
CMA and soft decision-directed scheme for semi-blind beamforming of QAM systems
, 2008 We propose a semi-blind adaptive beamforming approach for wireless systems that employ high-throughput quadrature amplitude modulation signalling schemes.
W. Yao +5 more
core +2 more sources
FlexMat, EarlyView.This review organizes flexible wearable electronics for cardiovascular monitoring into four interconnected information layers: surface electrophysiology, hemodynamic sensing, vascular imaging, and biofluid biomarker analysis. This framework clarifies how electrical rhythm, vascular loading, structural and flow‐related features, and biochemical states ...
Qiao Chen +5 more
wiley +1 more source
Optimized Detection with Analog Beamforming for Monostatic Integrated Sensing and Communication [PDF]
317323In this paper, we formalize an optimization frame-work for analog beamforming in the context of monostatic integrated sensing and communication (ISAC), where we also address the problem of self-interference in the analog domain.
Hernangomez, Rodrigo +4 more
core +2 more sources
Optimized Coherence Masking Improves Ultrasound Imaging of Kidney Cysts
Journal of Ultrasound in Medicine, EarlyView.Objectives Renal cystic lesions are exceedingly common and typically benign, though accurate diagnostic techniques are required to recognize the subset of malignant lesions that require timely intervention. Ultrasound (US) is the preferred first line test for renal cyst evaluation because it is safe, widely accessible, and low cost. US imaging, however,
Scott Schoen Jr +12 more
wiley +1 more source
Hybrid digital and analog beamforming design using genetic algorithms [PDF]
Hybrid analog and digital beamforming is gaining attention for its practical application in large-scale antenna systems. It offers significant cost savings, reduced complexity, and lower power consumption compared to entirely digital beamforming, all ...
Bahri, Sidi Mohammed +1 more
core +1 more source
Laser &Photonics Reviews, EarlyView.A digitally multiplexed, large‐aperture photoacoustic and ultrasound imaging architecture is presented to overcome the fundamental limited‐view artifact inherent in conventional arrays. By significantly broadening the structural detection coverage, this scalable platform enables high‐fidelity 3D visualization of human extremities within a single ...
Sinyoung Park +8 more
wiley +1 more source