Results 51 to 60 of about 33,075 (295)

3D‐Printed Serial Snap‐Through Architectures for Programmable Mechanical Response

Advanced Engineering Materials, EarlyView.
A serial snap‐through architecture is realized using compact 3D‐printed von Mises truss units arranged in a staged cascade. Their geometry and boundary conditions program multistage mechanical responses with plateaux and re‐hardening regimes. An inverted‐compliance model predicts these behaviors and enables analytical design of programmable force ...
Filipe A. Santos
wiley   +1 more source

Demonstration of 256 QAM 10 Gbps Signal Transmission over 570 km Fiber-based NG Radio over Fiber System [PDF]

Journal of Microwaves, Optoelectronics and Electromagnetic Applications
The rapid development of the Fifth Generation (5G) networks encourages researchers to improve the Radio over Fiber (RoF) technique to achieve data rates of 10 Gbps and beyond.
Hasan k. Al Deen, Haider J. Abd
doaj   +1 more source

Neural Network DPD for Aggrandizing SM-VCSEL-SSMF-Based Radio over Fiber Link Performance

Photonics, 2021
This paper demonstrates an unprecedented novel neural network (NN)-based digital predistortion (DPD) solution to overcome the signal impairments and nonlinearities in Analog Optical fronthauls using radio over fiber (RoF) systems.
Muhammad Usman Hadi, Muhammad Awais, Mohsin Raza, Kiran Khurshid, Hyun Jung   +4 more
doaj   +1 more source

Full-duplex analog radio-over-fiber system based on an integrated transceiver with a silicon microring modulator and a transfer-printed III-V photodetector [PDF]

, 2019
A full-duplex analog radio-over-fiber (RoF) system based on an integrated transceiver is proposed. The transceiver incorporates a C-band silicon microring modulator for the electrical-to-optical (E-O) conversion of the downstream signal and an O-band III-
Pan, Shilong, Roelkens, Günther, Tang, Zhenzhou, Van Thourhout, Dries, Zhang, Jing   +4 more
core  

Unique Performance Considerations for Printable Organic Semiconductor and Perovskite Radiation Detectors: Toward Consensus on Best Practice Evaluation

Advanced Functional Materials, EarlyView.
A lack of standard approaches for testing and reporting the performance of metal halide perovskites and organic semiconductor radiation detectors has resulted in inconsistent interpretation of performance parameters, impeding progress in the field. This Perspective recommends key metrics and experimental details, which are suggested for reporting in ...
Jessie A. Posar, Matthew Large, Andrea Ciavatti, Laura Basiricò, Beatrice Fraboni, Paul J. Sellin, Attila J. Mozer, Marco Petasecca, Matthew J. Griffith   +8 more
wiley   +1 more source

Characterisation of millimetre wave multimode radio-over-fibre systems [PDF]

, 2008
Millimetre wave radio-over-fibre links using both singlemode and multimode fibres are demonstrated over a 0-50 GHz bandwidth operating at 1550 nm. Results show that good link gain can be achieved with both single mode and multimode detectors.Millimetre ...
Cryan, MJ, Khawaja, BAM
core   +2 more sources

Understanding and Optimizing Li Substitution in P2‐Type Sodium Layered Oxides for Sodium‐Ion Batteries

Advanced Functional Materials, EarlyView.
This work explores Li‐substituted P2 layered oxides for Na‐ion batteries by crystallographic and electrochemical studies. The effect of lithium on superstructure orderings, on phase transitions during synthesis and electrochemical cycling and on the interplay of O‐ versus TM‐redox is revealed via various advanced techniques, including semi‐simultaneous 
Mingfeng Xu, Giovanni Gammaitoni, Michael Häfner, Eduardo Villalobos‐Portillo, Carlo Marini, Matteo Bianchini   +5 more
wiley   +1 more source

A Machine Learning Aided Reference-Tone-Based Phase Noise Correction Framework for Fiber-Wireless Systems

IEEE Transactions on Machine Learning in Communications and Networking
In recent years, the research involving the use of machine learning in the field of communication networks have shown promising results, in particular, improving receiver sensitivity against noise and link impairment.
Guo Hao Thng, Said Mikki
doaj   +1 more source

Performance Limits of Direct Wideband Coherent 3D Localization in Distributed Massive MIMO Systems

Sensors, 2021
We address the accuracy of wideband direct position estimation of a radio transmitter via a distributed antenna array in 5G cellular systems. Our derivations are based only on the presence of spatially coherent line-of-sight (LoS) signal components ...
Nenad Vukmirović, Miljko Erić, Petar M. Djurić   +2 more
doaj   +1 more source

Intelligent Analog Radio Over Fiber aided C-RAN for Mitigating Nonlinearity and Improving Robustness

2022 IEEE Symposium on Computers and Communications (ISCC), 2022
As a low-cost solution for the 5G communication system, centralised radio access network (C-RAN) has been implemented in the ultra-dense environment, where radio over fiber (RoF) technology can enable reduced operational cost as well as coordinated multi-point (CoMP) despite its less robustness and reduced system performance. On the other hand, machine
Li, Yichuan, El-Hajjar, Mohammed
openaire   +2 more sources