Results 31 to 40 of about 251,545 (286)

A comprehensive review of Millimeter wave based radio over fiber for 5G front haul transmissions

Indian Journal of Science and Technology, 2021
Objectives: To find out how fiber distribution system could be utilized for 5G based futuristic higher capacity and lower latency front haul transmission system.
Asha, Sandeep Dahiya
semanticscholar   +1 more source

Digital Predistortion Based Experimental Evaluation of Optimized Recurrent Neural Network for 5G Analog Radio Over Fiber Links

IEEE Access
In the context of Enhanced Remote Area Communications (ERAC), Radio over Fiber (RoF) technology plays a crucial role in extending reliable connectivity to underserved and remote areas. This paper explores the significance of fifth-generation (5G) Digital
Muhammad Usman Hadi, K. U. Danyaro, Alawi Alqushaibi, Rizwan Qureshi, Tanvir Alam   +4 more
semanticscholar   +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.
M. Hadi, Muhammad Awais, M. Raza, K. Khurshid, HyunDo Jung   +4 more
semanticscholar   +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  

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

Experimental Demonstration and Performance Enhancement of 5G NR Multiband Radio over Fiber System Using Optimized Digital Predistortion

Applied Sciences, 2021
This paper presents an experimental realization of multiband 5G new radio (NR) optical front haul (OFH) based radio over fiber (RoF) system using digital predistortion (DPD).
M. Hadi, M. Awais, M. Raza, Muhammad Ikram Ashraf, Jian Song   +4 more
semanticscholar   +1 more source

Power Over Fiber and Analog Radio Over Fiber Simultaneous Transmission Over Long Distance in Single Mode, Multicore, and Hollow Core Fibers

Laser & Photonics Reviews
In this work, a novel study of the feasibility of shared Power over Fiber (PoF) and Fifth‐Generation (5G) New Radio (NR) Analog Radio over Fiber (ARoF) over long distance Hollow‐core Fibers (HCF) is presented.
R. Pérez, Yongmin Jung, P. Petropoulos, Carmen Vázquez García   +3 more
semanticscholar   +1 more source

Structural biology of ferritin nanocages

FEBS Letters, EarlyView.
Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley   +1 more source