Articles tagged with Signal Propagation
A new hybrid wireless access network called PHWAN has been proposed to improve the performance of smart factories. The framework combines different wireless systems, including 5G, Wi-Fi, and low-power industrial networks, to adapt dynamically to the needs of different machines.
A team at the University of Kansas will develop intelligent spectrum management frameworks to enable reliable communication for drones. They aim to study how to use a proposed 5030-5091 MHz frequency band efficiently, with potential benefits including quicker deliveries and improved emergency response.
The 6G Test Center has collaborated with Tambest to develop bulletproof glass with RF signal protection, which can prevent high-frequency signals from penetrating. The test results have been successful, and the company is now ready for large-scale production of these dual-use products.
Scientists have discovered a way to turn ordinary liquids into epsilon-near-zero (ENZ) materials by interacting them with intense femtosecond laser pulses. This creates a new class of materials with tunable light propagation properties, opening up possibilities for advances in optical sensing and communication.
Researchers developed a low-power, high-frequency signal transmission tag that can efficiently reflect signals at untapped frequencies, eliminating the need for power-hungry signal transmitters. This technology enables real-time monitoring in industrial settings and has potential applications in smart cities and agriculture.
Researchers developed a method to analytically express the performance of wireless communication systems when using reconfigurable intelligent surfaces (RIS). The model accurately predicted the effects of RIS on improving radio wave propagation environment, providing a useful guide for positioning RIS to receive stronger signals.
Researchers at Lancaster University and Radboud University Nijmegen have discovered a novel pathway to modulate and amplify spin waves at the nanoscale, paving the way for dissipation-free quantum information technologies. The study's findings could lead to the development of fast and energy-efficient computing devices.
A new Bayesian inference framework reduces data size by over 80% while achieving accurate modeling and control of optical power evolution. The approach enables simultaneous exploitation and exploration of a data space to identify suitable candidates for autonomous driving optical networks.
Scientists have developed a new method to manipulate light using synthetic dimension dynamics, enabling precise control over light propagation and confinement. This breakthrough has significant implications for applications such as mode lasing, quantum optics, and data transmission.
A research team led by HKU physicists has introduced a solution to address optical loss in polariton propagation using synthetic complex frequency waves. This approach enables more efficient light-based devices, improved accuracy in sensors and imaging techniques, and enhanced nanophotonic circuits.
Researchers have developed an innovative approach to efficiently manipulate topological edge states for optical channel switching. By exploiting the finite-size effect in a two-unit-cell optical lattice, they achieved dynamic control over topological modes and demonstrated robust device performance.
Researchers have created a 19-core optical fiber with a standard cladding diameter, achieving a record transmission capacity of 1.7 petabits per second over 63.5 km. This design uses randomly coupled multi-core fibers and MIMO digital signal processing to minimize power consumption.
Physicists at Delft University of Technology have developed a new technology on a microchip combining optical trapping and frequency combs to measure distances with high precision in opaque materials. The technology uses sound vibrations instead of light, offering a simple and low-power solution for applications such as monitoring the ...
A research team at City University of Hong Kong invented a tunable terahertz meta-device that can control the radiation direction and coverage area of THz beams. The device allows for signal delivery to specific users or detectors and has flexibility to adjust the propagating direction, as needed.
Researchers demonstrate world's first 55-mode transmission at 1.53 petabits per second, outperforming previous records by three times in spectral efficiency. The technology holds promise for future high-capacity backbone networks and the development of Beyond 5G infrastructure.
Researchers developed high-capacity free-space optical links using unipolar quantum optoelectronic devices, achieving unprecedented data rates of up to 30 Gbit/s at 31-meter distances. The system's performance is resistant to weather conditions and showcases potential for fast, long-range optical links.
Researchers from the University of Kassel developed an approach to extend the limits of interferometric topography measurements for optical resolution below small structures. Microsphere assistance enables fast and label-free imaging without requiring extensive sample preparation.
Researchers at John Innes Centre found that amino acid waves, not calcium waves, mediate plant responses to stress. Glutamate released from wounds triggers a wave of calcium responses in plant tissues.
The Martian ionosphere's anisotropic characteristics cause dispersion of radio signals, distorting echoes and degrading image quality. A model simulating the ionospheric effect is developed to estimate Mars' subsurface without considering magnetic fields and solar activity.
A team led by Professor Song Min Kim developed a system that can support concurrent communications for tens of millions of IoT devices using backscattering millimeter-level waves. The system offers internet connectivity on a mass scale to IoT devices at a low installation cost.
Researchers have developed a new communication design that improves broadband wireless connectivity in the terahertz band, mitigating signal delay and achieving multi-Gbps speeds over short distances. The design uses multiple antennas and beamforming techniques to compensate for propagation losses and accurately estimate channels.