Results 11 to 20 of about 15,432 (261)

High-frequency Si/SiGe phototransistor model: Operation on multiple polarization points [PDF]

E3S Web of Conferences, 2022
This article presents the results of our research on the modeling of an HPT SiGe heterojunction phototransistor. Usually this HPTs type work for a single point of polarization in this work, we were interested in modeling the same HPT on different points ...
Diop A.M., Bennour A., Mazer S, El Bekkali M., Fattah M., Polleux J-L., Algani C.   +6 more
doaj   +1 more source

Perspectives of Radio over Fiber Technologies [PDF]

OFC/NFOEC 2008 - 2008 Conference on Optical Fiber Communication/National Fiber Optic Engineers Conference, 2008
Radio-over-fiber technologies enable efficient provisioning of broadband wireless services both in access and in in-building networks, in particular when combined with flexible optical routing and dispersion-robust RoF transport techniques, such as optical frequency multiplying.
Koonen A.M.J., Larrode M.G., Ng'oma A., Wang K., Yang H., Zheng Y., Tangdiongga E.   +6 more
openaire   +1 more source

Optically Powered and Controlled Drones Using Optical Fibers for Airborne Base Stations

Photonics, 2022
Mobile communication services are crucial during emergency disasters and temporary events, and future mobile communication systems should be able to provide such services. Airborne base stations using drones are highly effective as stand-in base stations
Natsuki Shindo, Taiki Kobatake, Denis Masson, Simon Fafard, Motoharu Matsuura   +4 more
doaj   +1 more source

RoFnet – Reconfigurable Radio over Fiber Network Architecture Overview

Journal of Telecommunications and Information Technology, 2023
This paper introduces the basic operational concepts of the RoFnet – reconfigurable radio over fiber network, which is a project supported by the Portuguese Foundation forScience and Technology.
Maria C. R. Medeiros, Ricardo Avó, Paula Laurˆencio, Noélia S. Correia, Alvaro Barradas, Henrique J. A. da Silva, Izzat Darwazeh, John E. Mitchell, Paulo M. N. Monteiro   +8 more
doaj   +1 more source

Experimental characterization of Sigma Delta Radio over fiber system for 5G C-RAN downlink

ICT Express, 2020
Radio over Fiber is a promising technology for the 5G Cloud Radio Access Network. We demonstrate experimentally Sigma Delta Radio over Fiber by means of Sigma Delta Modulator (SDM) subsequently replacing expensive digital to analog converters.
Muhammad Usman Hadi, Pier Andrea Traverso, Giovanni Tartarini, Hyun Jung   +3 more
doaj   +1 more source

Analog Radio Over Fiber Aided C-RAN: Optical Aided Beamforming for Multi-User Adaptive MIMO Design

Frontiers in Communications and Networks, 2021
Given the increasing demand for high data-rate, high-performance wireless communications services, the demand on the radio access networks (RAN) has been increasing significantly, where optical fiber has been widely used both for the backhaul and ...
Yichuan Li, Salman Ghafoor, Muhammad Fasih Uddin Butt, Muhammad Fasih Uddin Butt, Mohammed El-Hajjar   +4 more
doaj   +1 more source

Radio-over-fiber transmission using vortex modes [PDF]

2015 International Topical Meeting on Microwave Photonics (MWP), 2015
This paper demonstrates experimentally the distribution of radio-over-fiber (RoF) signals using orbital angular momentum (OAM) of light over standard OM4 multimode fiber (MMF) at 850 nm wavelength. Five independent OAM modes are used to convey RoF signals in the microwave regime showing robust performance and therefore opening new prospects for ...
Tatarczak, A., Lu, X., Rommel, S., Rodriguez, S., Olmos, J. J. Vegas, Monroy, I. Tafur   +5 more
openaire   +2 more sources

Hybrid OFDM and Radio-Over-Fiber Transport System Based on a Polarization Modulator

IEEE Photonics Journal, 2015
A hybrid orthogonal frequency-division multiplexing (OFDM) and quadruple-frequency radio-over-fiber (RoF) transport system is developed based on colorless optical polarization beam splitters and an optical polarization-arrangement technique.
Ching-Hung Chang, Peng-Chun Peng, Han-Wen Gu, Chin-Wang Huang, Meng-Hsin Fang, Hsuan-Lun Hu, Po-Tso Shen, Chung-Yi Li, Hai-Han Lu   +8 more
doaj   +1 more source

5G-Compatible IF-Over-Fiber Transmission Using a Low-Cost SFP-Class Transceiver

IEEE Access, 2022
With the rise of 5G and beyond, the ever-increasing data-rates demanded by mobile access are severely challenging the capacity of optical fronthaul networks.
Marco A. Fernandes, Bruno T. Brandao, Abel Lorences-Riesgo, Paulo P. Monteiro, Fernando P. Guiomar   +4 more
doaj   +1 more source

Power limits with adjustable 10G receiver parameters for A-RoF transmission

Elektronika ir Elektrotechnika, 2023
Current paper characterizes the performance of the three-radio-frequency-channels, orthogonal-frequency-division-multiplexed (OFDM) radio-over-fiber (RoF) transmission system in terms of error-vector-magnitude and received optical signal power for a ...
Inna Kurbatska, Armands Ostrovskis, Laura Skladova, Kristaps Rubuls, Sandis Spolitis, Vjaceslavs Bobrovs   +5 more
doaj   +1 more source