Results 71 to 80 of about 4,319 (225)

Using a $\hbox{Si}_{3}\hbox{N}_{4}$ Ring Resonator Notch Filter for Optical Carrier Reduction and Modulation Depth Enhancement in Radio-Over-Fiber Links

IEEE Photonics Journal, 2013
Optical carrier reduction via the use of a Si3N4 ring resonator notch filter (RRNF) is proposed and experimentally demonstrated as a means for improving the modulation efficiency in 10-GHz radio-over-fiber (RoF) links.
A. Perentos, F. Cuesta-Soto, A. Canciamilla, B. Vidal, L. Pierno, N. S. Losilla, F. Lopez-Royo, A. Melloni, S. Iezekiel   +8 more
doaj   +1 more source

Future broadband access network challenges [PDF]

, 2010
Copyright @ 2010 IEEEThe optical and wireless communication systems convergence will activate the potential capacity of photonic technology for providing the expected growth in interactive video, voice communication and data traffic services that are ...
Abdollahi, SR, Al-Raweshidy, H, Darzi, A, Nilavalan, R   +3 more
core   +1 more source

Latency analysis on W-band hybrid fiber-wireless link using software defined radio in real time

Revista Facultad de Ingeniería Universidad de Antioquia, 2018
This paper reports an experimental comparison and analysis of latency for different modulation techniques at different data rates in W-band Radio-over-Fiber (RoF) transmission links. In addition, a software defined radio called GNU-Radio is employed with
Mónica Andrea Rico-Martínez, Álvaro Morales-Vicente, Rafael Puerta-Ramírez, Víctor Mehmeri-Dantas, Idelfonso Tafur-Monroy, Gloria Margarita Varón-Durán   +5 more
doaj  

Temperature Impairment Characterization in Radio-Over-Multimode Fiber Systems [PDF]

, 2012
The proceeding at: SPIE Photonics West 2012.Broadband Access Communication Technologies VI., took place in 2012, January 21-26, in San Francisco, California (USA).
Sánchez Montero, David Ricardo, Vázquez García, María Carmen   +1 more
core   +2 more sources

Investigating delay of the media access control protocols for IoT‐RoF using quantum entanglement

IET Networks, Volume 13, Issue 4, Page 324-337, July 2024.
IoT‐RoF QE‐based: MAC Protocol Delay Study. Abstract One of the significant challenges of the Radio over fibre (RoF) Medium Access Control (MAC) protocol is the propagation delay. This delay can lead to serious issues, such as higher propagation delay resulting in collisions and unnecessary retransmissions.
Shakir Salman Ahmad, Hamed Al‐Raweshidy, Rajagopal Nilavalan   +2 more
wiley   +1 more source

Nanophotonic Devices for Radio Over Fiber (RoF) Technologies in Telecommunications Networks

Radioelectronics. Nanosystems. Information Technologies.
Background: The combination of nanophotonic devices with Radio Over Fibre (RoF) technology has the potential to enhance telecommunications networks significantly. RoF technology, known for its ability to transport wireless data rapidly across optical fibres, has challenges such as capacity limitations and latency issues.
Hanan Mahmood Shukur, Sirwan Kareem Jalal, Maher Waleed Saab, Sharmeen Izzat Hassan, Ghazwan Saleem Naamo Ghno, Saif Saad Ahmed, Salama Idris Mustafa, Abdymanap Z. Pirmatov   +7 more
openaire   +2 more sources

A novel intelligent approach for man‐in‐the‐middle attacks detection over internet of things environments based on message queuing telemetry transport

Expert Systems, Volume 41, Issue 2, February 2024.
Abstract One of the most common attacks is man‐in‐the‐middle (MitM) which, due to its complex behaviour, is difficult to detect by traditional cyber‐attack detection systems. MitM attacks on internet of things systems take advantage of special features of the protocols and cause system disruptions, making them invisible to legitimate elements.
Álvaro Michelena, José Aveleira‐Mata, Esteban Jove, Martín Bayón‐Gutiérrez, Paulo Novais, Oscar Fontenla Romero, José Luis Calvo‐Rolle, Héctor Aláiz‐Moretón   +7 more
wiley   +1 more source

Transmission Quality Measurement of Two Types of 60 GHz Millimeter-Wave Generation and Distribution Systems [PDF]

, 2009
International audienceIn this paper, we demonstrate and compare experimentally two techniques achieving very high-data-rates (> 1 Gb/s) wireless transmission in the 60 GHz window using radio over fiber (RoF) for reach extension.
Blache, Fabrice, Charbonnier, Benoit, Enard, Alain, Goix, Michel, Lecoche, Frédéric, Li, Hong Wu, Mallecot, Franck, Tanguy, Eric, Van Dijk, Frederic   +8 more
core   +2 more sources

Analisis Kinerja Jaringan Radio over Fiber (RoF) menggunakan Optical Amplifier

Jurnal Litek : Jurnal Listrik Telekomunikasi Elektronika
Perkembangan teknologi telekomunikasi menuntut peningkatan kecepatan dan keandalan pertukaran data. Meskipun sistem transmisi kabel memiliki kecepatan tinggi dan performa prima, namun biaya instalasi yang dibutuhkan cukup besar. Sebagai solusi, Radio over Fiber (RoF) dihadirkan untuk mengintegrasikan jaringan nirkabel dan kabel.
Sabiqun Naufal, Misriana Misriana, Hanafi Hanafi   +2 more
openaire   +1 more source

Performance Analysis of DP‐QAM‐Based Optical OFDM PON Employing Optical Multicarrier

Journal of Engineering, Volume 2024, Issue 1, 2024.
This work proposes a new hybrid bidirectional standard single mode fiber (SSMF)/free space optical (FSO) dual polarization quadrature amplitude modulation (DP‐QAM) employing optical orthogonal frequency division multiplexing (OFDM). An optical multicarrier generator (OMG) source is utilized. The suggested model is simulated using VPI photonics software.
Ibrahim Luay, Tahreer Safa’a Mansour, Muhammad Nasir Khan   +2 more
wiley   +1 more source