Results 21 to 30 of about 15,888 (260)

Photonic Systems and Devices for Linear Cell Radar

Applied Sciences, 2019
This paper reviews linear cell radar systems, which are radar systems consisting of many antenna units connected by radio-over-fiber to monitor linear-shaped areas. A linear cell system using a millimeter-wave band can provide high-resolution imaging for
Tetsuya Kawanishi, Atsushi Kanno, Pham Tien Dat, Toshimasa Umezawa, Naokatsu Yamamoto   +4 more
doaj   +1 more source

Transport Schemes for Fiber-Wireless Technology: Transmission Performance and Energy Efficiency

Photonics, 2014
Fiber-wireless technology has been actively researched as a potential candidate for next generation broadband wireless signal distribution. Despite the popularity, this hybrid scheme has many technical challenges that impede the uptake and commercial ...
Christina Lim, Yizhuo Yang, Ampalavanapillai Nirmalathas   +2 more
doaj   +1 more source

Radio- and Power-Over-Fiber Integration for 6G Networks: Challenges and Future Prospects

IEEE Access
The rapid evolution of wireless communication networks has fueled the demand for high-speed data transmission and low-latency connectivity. As the world looks toward the development of sixth-generation (6G) Networks, the need for innovative power ...
Leticia Carneiro de Souza, Victoria Dala Pegorara Souto, Arismar Cerqueira Sodre   +2 more
doaj   +1 more source

Flexible and Scalable Radio over Fiber Architecture [PDF]

Radioengineering, 2019
In this paper, we investigate a scalable Radio over Fiber (RoF) system compliant to 5G fronthauling requirements. The proposed RoF architecture is able to adjust the network resources and capacities to satisfy user demands in terms of service, data rate ...
S. Rebhi, R. Barrak, M. Menif
doaj  

Advanced radio over fiber network technologies

Optics Express, 2013
The evolution of wireless communication networks supporting emerging broadband services and applications offers new opportunities for realizing integrated optical and wireless network infrastructures. We report on some of our recent activities investigating advanced technologies for next generation converged optical wireless networks.
Dalma, Novak, Rod, Waterhouse
openaire   +2 more sources

Machine Learning-Based Linearization Schemes for Radio Over Fiber Systems

IEEE Photonics Journal, 2022
This work proposes a novel machine learning (ML)-based linearization scheme for radio-over-fiber (RoF) systems with external modulation. The proposed approach has the advantage of not requiring new training campaigns in case the Mach-Zehnder modulator ...
Luiz A. M. Pereira, Luciano L. Mendes, Carmelo J. A. Bastos-Filho, Arismar Cerqueira S. Jr   +3 more
doaj   +1 more source

Photonic Generation of Ultrawideband (UWB) Pulse With Tunable Notch-Band Behavior

IEEE Photonics Journal, 2012
A photonic approach to generating the ultrawideband (UWB) pulses with tunable band-rejection behavior based on a negative coefficient two-tap microwave photonic filter is proposed and experimentally demonstrated. To avoid the interference between UWB and
Jianyu Zheng, Ninghua Zhu, Lixian Wang, Jianguo Liu, Honggang Liang   +4 more
doaj   +1 more source

Design and Prototype Implementation of Software-Defined Radio Over Fiber

IEEE Access, 2021
Future networks require a high degree of flexibility over wide areas to enable many services that require higher quality wireless networks such as remote control of cars and remote surgery.
Takumasa Ishioka, Kazuki Aiura, Ryota Shiina, Tatsuya Fukui, Tomohiro Taniguchi, Satoshi Narikawa, Katsuya Minami, Kazuhiro Kizaki, Takuya Fujihashi, Takashi Watanabe, Shunsuke Saruwatari   +10 more
doaj   +1 more source

Near‐Field Electrospinning Micro‐Printhead Achieves Precise Control of Nanofiber Deposition

Advanced Engineering Materials, EarlyView.
A micro‐printhead for near‐field electrospinning enables reproducible deposition of polymer nanofibers with diameters below 50 nm. Systematic parameter studies uncover the mechanisms linking operating conditions to fiber morphology, paving the way for precise and low‐cost nanoscale 3D manufacturing.As a high‐resolution, cost‐effective, and rapid ...
Han Xu, Dario Mager, Jan G. Korvink
wiley   +1 more source

Al–Cu Composite Casting of Laser‐Deoxidized Copper: Bonding, Interfacial Chemistry, and Thermal Conductivity

Advanced Engineering Materials, EarlyView.
This study investigates laser‐based oxide removal of Cu inserts in oxygen‐free conditions and examines long‐term oxidation kinetics and surface chemistry under different atmospheres via X‐ray photoelectron spectroscopy. Al–Cu compound casting with differently oxidized surfaces is performed, and intermetallic phase formation, morphology, and thermal ...
Timon Steinhoff, Finn‐Lennard Janthur, Sascha Zimmermann, Sarah Seffer, Jörg Hermsdorf, René Gustus, Ludger Overmeyer, Wolfgang Maus‐Friedrichs, Hans Jürgen Maier, Christian Klose   +9 more
wiley   +1 more source