Results 31 to 40 of about 21,925 (307)

Photonic Systems and Devices for Linear Cell Radar

open access: yesApplied 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   +4 more
doaj   +1 more source

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

open access: yesPhotonics, 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   +2 more
doaj   +1 more source

Improved IEEE 802.11 point coordination function considering fiber-delay difference in distributed antenna systems [PDF]

open access: yes, 2014
In this paper, we present an improved IEEE 802.11 wireless local-area network (WLAN) medium access control (MAC) mechanism for simulcast radio-over-fiber-based distributed antenna systems where multiple remote antenna units (RAUs) are connected to one ...
Dai, Yitang   +6 more
core   +1 more source

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

open access: yesIEEE 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   +2 more
doaj   +1 more source

Flexible and Scalable Radio over Fiber Architecture [PDF]

open access: yesRadioengineering, 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

open access: yesIEEE 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   +3 more
doaj   +1 more source

Remote downconversion scheme for uplink configuration in radio/fiber systems [PDF]

open access: yes, 2005
The authors present a novel technology for uplink transmission in radio over fiber (RoF) distribution systems. The technique employs remote downconversion of the uplink data to intermediate frequency (IF) in the base station (BS).
Barry, Liam P.   +1 more
core   +1 more source

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

open access: yesIEEE 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   +4 more
doaj   +1 more source

Design and Prototype Implementation of Software-Defined Radio Over Fiber

open access: yesIEEE 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   +10 more
doaj   +1 more source

Multifunctional operation of a fiber Bragg grating in a WDM/SCM radio over fiber distribution system [PDF]

open access: yes, 2004
A radio over fiber distribution system incorporating both sub-carrier multiplexing (SCM) and wavelength division multiplexing (WDM) technologies is presented.
Anandarajah, Prince M.   +2 more
core   +1 more source

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