Results 31 to 40 of about 10,695,067 (249)

Simultaneous Dual Band Transmission Over Multimode Fiber-Fed Indoor Wireless Network [PDF]

open access: yes, 2006
Performance measurements of different combinations of digital enhanced cordless telecommunications packet radio service, global system for mobile communications, universal mobile telecommunication service, and 802.11g (54 Mbps) signals in a dual band ...
Lethien, Christophe   +7 more
core   +1 more source

Characterization of wavelength interleaving in radio-over-fiber systems employing WDM/SCM [PDF]

open access: yes, 2006
A radio-over-fiber (RoF) distribution system incorporating both sub-carrier multiplexing and wavelength division multiplexing (WDM) technologies is presented. This signal is directly modulated onto three high-speed lasers.
Anandarajah, Prince M.   +3 more
core   +2 more sources

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  

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 ...
Feifei Yin   +13 more
core   +1 more source

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

Full duplex 60 GHz millimeter wave transmission over multi-mode fiber [PDF]

open access: yes, 2010
Copyright @ 2010 IEEENew wireless subscribers are signing up at an increasing demand of more capacity for ultra-high data rate transfers at speeds more than 1 Gbps, while the radio spectrum is limited. Millimeter wave communication system offers a unique
M. Kamarei   +9 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

Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system

open access: yesFEBS Letters, EarlyView.
Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley   +1 more source

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