Results 41 to 50 of about 4,023,657 (313)

Stratospheric Optical Inter-Platform Links for High Altitude Platforms [PDF]

, 2002
Optical propagation simulations for the case of a laser optical link between two stratospheric High Altitude Platforms have been performed. The simulations, together with communications link budget calculations, show that high data rate communications ...
Giggenbach, Dirk, Holzbock, Matthias, Werner, Markus, Robert Purvinskis, Dirk Giggenbach, Markus Werner, Purvinskis, Robert, Matthias Holzbock   +7 more
core   +1 more source

On the Use of Factor Graphs in Optical Communications [PDF]

, 2015
Factor graphs and message passing allow the near-automated development of algorithms in many engineering disciplines, including digital communications.
Irukulapati, Naga V., Naga V. Irukulapati, Domenico Marsella, Henk Wymeersch, Johannisson, Pontus,, Agrell, Erik,, Irukulapati, Naga Vishnukanth,, Agrell, Erik, Secondini, Marco, Erik Agrell, Secondini, M., Marsella, D.,, Irukulapati, Naga VishnuKanth, Johannisson, Pontus, Pontus Johannisson, Wymeersch, Henk,, Wymeersch, Henk, Secondini, M.,, Marsella, Domenico, Marco Secondini, Marsella, D.   +20 more
core   +1 more source

DSTG Laser Satellite Communications -Current Activities and Future Outlook

, 2022
This paper will present an overview of the Defence Science and Technology Group's (DSTG) activities in laser satellite communications. A status update on the development of the DSTG Optical Ground Station (OGS), which is located at a site near sea level ...
Bennet, F., Hollick, M., Camp-Smith, P., Mudge, K., Peck, C., Szumylo, B., Price, I., Lechner, G., Magarelli, J., Jager, E., Kodithuwakkuge, J., Copeland, M., Bandara, D., Devrelis, V., Alvino, P., Raj, A., Herrald, N., Grant, K., Clare, B.   +18 more
core   +1 more source

The performance of a dual header pulse position modulation in the presence of artificial light interferences in an indoor optical wireless communications channel with wavelet denoising [PDF]

, 2011
Problem statement - Similar to other baseband modulation schemes, the performance of the Dual Header Pulse Interval Modulation (DH-PIM) is adversely affected by Artificial Light Interferences (ALI) in an indoor Optical Wireless Communications (OWC ...
Ghassemlooy, Zabih, Angelova, Maia, Rajbhandari, Sujan   +2 more
core   +1 more source

Automatic Lesion Morphometrics Reliably Predict Sensorimotor Recovery After Spinal Cord Injury: A Longitudinal, Multicenter Neuroimaging Study

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To evaluate automatic magnetic resonance imaging (MRI)‐derived lesion morphometrics against manual measurements and their prognostic value for characterizing distinct acute to chronic neurological recovery trajectories after spinal cord injury (SCI). Methods We studied a retrospective, multicenter cohort of cervical and thoracolumbar
Dario Pfyffer, Jan Valošek, Lynn Farner, Enamundram Naga Karthik, Gergely David, Norbert Weidner, Rainer Abel, Doris Maier, Armin Curt, Margret Hund‐Georgiadis, Mirko Aach, Michael Baumberger, Julien Cohen‐Adad, Patrick Freund, the Nogo Inhibition in Spinal Cord Injury Study Group, Rainer Abel, Kerstin Rehahn, Mirko Aach, Klaus Röhl, Norbert Weidner, Marion Saur, Nikolaus Weiskopf, Doris Maier, Andreas Badke, Margret Hund‐Georgiadis, Michael Baumberger, Armin Curt, Jesus Benito‐Penalva, Jiri Kriz   +28 more
wiley   +1 more source

Enhancement of the Through‐Thickness Electrical Conductivity of Carbon‐Fiber‐Reinforced Plastics Using Large Graphite Particles

Advanced Engineering Materials, EarlyView.
To enhance through‐thickness conductivity without sacrificing impregnation, large spherical graphite particles are intentionally employed in a low‐viscosity resin. Unlike finer conductive fillers, these particles remain outside the fiber bundles and accumulate in resin‐rich interlaminar regions during molding.
Keito Hosoe, Yu Zhou, Shintaro Kamiyama, Takao Okada, Tomohiro Yokozeki, Ryoma Tokonami, Tatsuhiro Takahashi   +6 more
wiley   +1 more source

Biodegradable and Biocompatible Functional Polymers for Biomedical Applications

Advanced Functional Materials, EarlyView.
Biodegradable and biocompatible functional polymers integrate electrical, mechanical, and stimuli‐responsive functionalities while enabling programmed degradation under physiological conditions. This review introduces recent advances in conductive, shape‐memory, self‐healing, photocurable, and adhesive polymer systems, emphasizing material design ...
Won Bae Han, Shuvra Mondal, Sungkeun Han, Chan‐Hwi Eom, Venkata Ramesh Naganaboina, Suk‐Won Hwang   +5 more
wiley   +1 more source

High speed short range optical wireless ground-to-train communications [PDF]

, 2010
There is a huge demand for seamless high-speed communications in fast moving trains. People want broadband services while on board as in their home or in the workplace.
Ghassemlooy, Zabih, Paudel, Rupak, Rajbhandari, Sujan, Le Minh, Hoa   +3 more
core  

Machine learning methods for optical communications

, 2020
Radio over Fiber (RoF) technology has been realized in different forms ranging from analog to more complex forms [1-6]. The enhancement of capacity and wireless coverage has posed significant challenges to the existing optical and wireless access ...
Machine learning methods for optical communications
core   +1 more source

Multimodal Optoelectronic Synapses for Neuromorphic Intelligence: Coupling Light, Electrical, Thermal, and Beyond

Advanced Functional Materials, EarlyView.
This review revisits optoelectronic neuromorphic devices that extend from unimodal sensing toward multimodal perception. Five types of stimuli‐to‐output information flow that are classified based on the device roles within the system and applications are summarized and discussed.
Jihyun Shin, Junhyung Cho, Wangmyung Choi, Jaehyun Hur, Jae Kyeong Jeong, Ulrike Kraft, Hocheon Yoo   +6 more
wiley   +1 more source