Results 101 to 110 of about 1,722,156 (269)
Advanced Photonics Research, Volume 7, Issue 1, January 2026.a) Schematic of the SSPP waveguide integrated with SRR metamaterial and MEMS actuator arrays with electric field confinement in the gap below the microbridge. b) Cross‐section of the MEMS actuator consists of a buried lead line and a microbridge at different deflection positions. c) The notch band in the microwave transmission characteristic shifts due
Van Minh Nguyen, Yoshiaki Kanamori
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Phase‐Changing Vanadium Oxides for Electromagnetic Radiation Management
Small Science, Volume 6, Issue 1, January 2026.Vanadium dioxide's reversible insulator‐to‐metal transition near room temperature enables ultrafast, broadband electromagnetic modulation from ultraviolet to radiofrequencies. With femtosecond switching speeds and cycling endurance exceeding 100 million cycles, VO2 metasurfaces achieve tuneable absorption, beam steering, and polarisation control. These
Mohammad Taha +2 more
wiley +1 more source
, 2017 Fifth generation (5G) wireless networks are expected to utilize wide bandwidths available at millimeter wave (mmWave) frequencies for enhancing system throughput.
Choi, Junil, Love, David J., Song, Jiho
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Hybrid Beamforming for Terahertz Joint Ultra-Massive MIMO Radar-Communications [PDF]
, 2021 Ahmet M. Elbir +2 more
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The Chinese Radio Telescope Array for Interplanetary Scintillation Monitoring
Space Weather, Volume 24, Issue 1, January 2026.Abstract Solar flares, coronal mass ejections (CMEs) and enegertic particles, etc., are the driving sources that may cause catastrophic space weathers. It is desirable to obtain information of solar eruptions like flares and CMEs, etc., propagating from the Sun to the near‐Earth space.
Yihua Yan +10 more
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Proceedings of the ACM on Interactive Mobile Wearable and Ubiquitous TechnologiesPrevious mmWave sensing solutions assumed good signal quality. Ensuring an unblocked or strengthened LoS path is challenging. Therefore, finding an NLoS path is crucial to enhancing perceived signal quality.
Long Fan +5 more
semanticscholar +1 more source
Robust Hybrid Beamforming With Quantized Deep Neural Networks
2019 IEEE 29th International Workshop on Machine Learning for Signal Processing (MLSP), 2019 Hybrid beamforming is integral to massive multiple-input multiple-output (MIMO) communications in reducing the training overhead and hardware cost associated with large antenna arrays. Prior works have employed optimization and greedy search to jointly estimate the precoder and combiner weights.
Elbir, Ahmet M., Mishra, Kumar Vijay
openaire +2 more sources
An Energy‐Tiered Clustering‐Based Blind Detector for RIS‐RSM Systems
IET Communications, Volume 20, Issue 1, January/December 2026.This paper proposes an energy‐tiered structure initialization (ETSI) algorithm for blind detection in reconfigurable intelligent surface (RIS)‐assisted spatial modulation systems. By decomposing the modulation constellation into multiple energy tiers and leveraging structured prototype initialization with tier‐normalized refinement, ETSI effectively ...
Lijuan Zhang +2 more
wiley +1 more source
International Journal of Digital Multimedia Broadcasting, 2022 For multiuser millimeter wave (mmWave) massive multiple-input multiple-output (MIMO) systems, the key factor that causes the system sum-rate to change is its interference plus noise, corresponding to the number of base station (BS) antennas and signal-to-
Jian Liu +4 more
doaj +1 more source
Interleaved Training and Training-Based Transmission Design for Hybrid Massive Antenna Downlink
, 2018 In this paper, we study the beam-based training design jointly with the transmission design for hybrid massive antenna single-user (SU) and multiple-user (MU) systems where outage probability is adopted as the performance measure.
Huang, Yongming +3 more
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