نتایج جستجو برای: radio over fiber rof

تعداد نتایج: 1340509  

2013
Sebastien Deronne Véronique Moeyaert Sebastien Bette

The radio-over-fiber (RoF) technology is a suitable solution to provide high bitrates and to improve the IEEE 802.11 WLAN coverage. Those systems use an optical network to distribute the radio signal from the access point to several remote antennas. Our research project consist in the investigation of the Medium Control Access (MAC) layer performance of those networks. We decided to achieve our...

2014
Kawanishi

Introduction The Great East Japan Earthquake on 11th March 2011 seriously damaged telecommunication networks, which were indispensable to share and collect information for disaster recovery activities. Telecom operators in Japan used various types of transmission media, including communication satellites, to resume services quickly [1]. Radio-wave communications can have agile deployment capabi...

2013
Ahmed Haddad Maurice Gagnaire

It is today widely admitted that existing cellular backhauling needs to be redesigned to cope with radio mobile traffic increase. We have proposed in recent papers an alternative solution called GeRoFAN (Generic Radio-over-Fiber Access Network) exploiting both the benefits of optical transparency and Analog-Radio-over-Fiber (A-RoF). Thanks to A-RoF and reflective modulators used at network term...

2013
Prof. Vikrant Sharma Dalveer Kaur

This paper presents an overview of the fiber optics and its principles in optical communication network. Fiber nonlinearities are bounded factors for optical communications systems, in specific for wavelength division multiplexing .Among the nonlinearities effect is four-wave mixing ,which is a nonlinear process that generates new frequency components from existing frequency components. FWM is ...

2008
Katsutoshi Tsukamoto Takeshi Higashino Takuya Nakamura Koichi Takahashi Yuji Aburakawa Shozo Komaki Kazuhiko Wakamori Toshiji Suzuki Kamugisya Kazaura Alam Mohammad Shah Kazunori Omae Mitsuji Matsumoto

Radio on Fiber (RoF) with layer 1 routing capability can realize a cost effective universal platform for future ubiquitous wireless services. The layer 1 routing concept can be realize by not only RoF but also RoFSO (Radio on Free Space Optics) or RoR (Radio on Radio) networks, which provide a free space for heterogeneous wireless services in Free Space Optics or millimeter wave radio. Developm...

Journal: :Journal of Lightwave Technology 2021

We propose using power-over-fiber (PoF) in some part of future 5G cellular solutions based on radio access networks considering currently installed front-haul with single mode fiber to optically power communication systems for new (NR) data transmission. Simulations addressing design parameters are presented. Radio-over-fiber (RoF) transmission over (SMF) is experimentally implemented and teste...

2010
Martin Maier Navid Ghazisaidi

Future bimodal fiber-wireless (FiWi) access-metro networks may deploy both radio-over-fiber (RoF) and radio-andfiber (R&F) technologies. RoF networks are rapidly becoming mature, but they fall short of interworking with distributed wireless MAC protocols such as DCF in widely deployed IEEE 802.11 WLANs. While R&F networks are able to avoid this limitation by means of protocol translation at the...

Journal: :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. Findings: Integrating the of Millimeter wave (Mm wave) signals over Radio Fiber (RoF) i.e. Mm-RoF can seen as a promising candidate that would satisfy requirement imposed by wireless Further, optical generation Mm is major concern need...

2014
Niels Neumann Dirk Plettemeier

The convergence of optical and wireless systems such as Radio-over-Fiber (RoF) networks is the key to coping with the increasing bandwidth demands due to the increasing popularity of video and other high data rate applications. A high level of integration of optical technologies enables simple base stations with a fiber-to-the-antenna (FTTA) approach. In this paper, we present a complete full-d...

Journal: :Optics express 2013
Alexander Lebedev Xiaodan Pang J J Vegas Olmos Søren Forchhammer Idelfonso Tafur Monroy

We present an experimental investigation of the 60 GHz optical carrier suppressed radio over fiber systems with less than 5 dB carrier suppression. As a case study, the 60 GHz RoF signal is generated using a 12.5 Gb/s commercially available Mach-Zehnder modulator biased at its minimum point. We report on error free transmission over 20 km of standard single mode fiber and 1 m of wireless distan...

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