Results 61 to 70 of about 7,919 (188)
International Journal of Satellite Communications and Networking, Volume 44, Issue 5, Page 594-606, September/October 2026.ABSTRACT The integration of low Earth orbit (LEO) satellite constellations with commercial aircraft communication systems presents critical challenges in maintaining continuous connectivity during dynamic flight conditions. Current geostationary satellite systems suffer from high round‐trip latency ( > 500 ms) and inadequate coverage at high latitudes,
Raúl Parada +4 more
wiley +1 more source
EURASIP Journal on Advances in Signal Processing, 2011 In this paper, we propose a novel transceiver structure for orthogonal frequency division multiple access-based uplink multiuser multiple-input multiple-output systems.
Wu Yi +5 more
doaj
Compact Inkjet-Printed Flexible MIMO Antenna for UWB Applications
IEEE Access, 2018 In this paper, a miniaturized fully inkjet-printed flexible multiple-input-multiple-output (MIMO) antenna for ultrawideband (UWB) application is proposed, occupying a compact size of $22\times 31\times 0.125$ mm3.
Wentao Li +4 more
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Portable Radar for Noncontact Heart Rate Monitoring and Estrus Detection in Dairy Cows
IEEJ Transactions on Electrical and Electronic Engineering, Volume 21, Issue 9, Page 1390-1403, September 2026.This study introduces a portable radar system for real‐time monitoring of respiratory and heart rates in dairy cows. It uses millimeter‐wave Frequency Modulated Continuous Wave (FMCW) radar to perform noncontact physiological sensing, reducing behavioral disturbance. The radar system's design prioritizes portability, cost‐effectiveness, and robustness,
Yingxiu Li +7 more
wiley +1 more source
Water ScienceRainfall prediction is one of the crucial stages of the watershed management process. In this research, A comparison of the performance among Monte Carlo and Thomas Fiering, linear regression (LR), multiple linear regression (MLR), and SVM optimized by ...
Nadia Sedghnejad +2 more
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Performance evaluation of frequency division duplex (FDD) massive multiple input multiple output (MIMO) under different correlation models. [PDF]
PeerJ Comput Sci, 2022 Abdul-Hadi AM +4 more
europepmc +1 more source
Nanophotonics, Volume 15, Issue 14, 27 July 2026.Integrated optical phased arrays are emerging as scalable engines for solid‐state beam steering and programmable wavefront control. This Review maps the field from beam‐steering principles and core building blocks to material platforms, system‐level bottlenecks, and application frontiers, highlighting how heterogeneous integration, aperiodic ...
Jingwei Li +7 more
wiley +1 more source
Space‐Time‐Coding Metasurfaces Enabling Programmable Range‐Angle‐Dependent Energy Auto‐Scanning
Nanophotonics, Volume 15, Issue 14, 27 July 2026.This paper presents a novel energy auto‐scanning system based on a space‐time‐coding metasurface. By applying progressive time‐delayed, time‐varying phase modulation, the system generates non‐uniform, temporally evolving electromagnetic field distributions across both angle and range.
Yuzhen Chen +3 more
wiley +1 more source
Sensors, 2013 Mobile wireless multimedia sensor networks (WMSNs), which consist of mobile sink or sensor nodes and use rich sensing information, require much faster and more reliable wireless links than static wireless sensor networks (WSNs).
Cheolwoo You +2 more
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Joint Design of Space-Time Transmit and Receive Weights for Colocated MIMO Radar
Sensors, 2018 Compared with single-input multiple-output (SIMO) radar, colocated multiple-input multiple-output (MIMO) radar can detect moving targets better by adopting waveform diversity.
Ze Yu +3 more
doaj +1 more source