Radio over fiber system based on a hybrid link for next generation of optical fiber communication

Alaoui, Kaoutar Saidi; Foshi, Jaouad; Zouine, Y.

doi:10.11591/ijece.v9i4.pp2571-2577

Cited by 7 publications

(4 citation statements)

References 15 publications

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“…ROF technology uses Multi-Carrier Modulation, such as OFDM, which provides the ability to increase bandwidth along with an reasonable amount of costs, and this concept has become an adequate subject recently for several research projects. At the other hand, the SAC-OCDMA method is able to boost device data levels and maximize user numbers, and is the spectral amplitude coding optic code division multiple access method [15]. In 2019 Hybrid TDM / WDM Gigabit Passive Optical network experimental research is carried out by replacement of Free Space Optical channel with the ultimate mile optical fibre.…”

Section: Introductionmentioning

confidence: 99%

Design of high scalability multi-subcarrier rof hybrid system based on optical CDMA/TDM

Wadday

Ali

Albattat

2021

IJEECS

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<span>The technology of radio over fiber (RoF) regard a crucial point to solve problems in wireless communication system. As well as, the growth of internet applications also reveals a tremendous increase in bandwidth for different applications. Therefore, the development of optical networks is very important that have maximum bandwidth by using different multiple access techniques. Optical code division multiple access (OCDMA) technique has considered as a good solution for high bandwidth network. Hybrid optical systems of OCDMA and time division multiplexing (OTDM) has been proposed in this paper to increase the number of simultaneous users. The results of hybrid OCDMA and OTDM system demonstrate that this system can make a considerable increase in the network scalability while ensuring sufficient data rate and an acceptable bit error rate. Where M-user OCDMA signals can be transmitted in different channels of an OTDM system. Due to its wide band facility compared with other access techniques, OCDMA used here. In addition to its high scalability for our radio network, the OTDM and SCM utilized. The combination of these efficient access technique and powerful time-sharing media are lead to increase the framework system scalability.</span>

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Section: Introductionmentioning

confidence: 99%

Design of high scalability multi-subcarrier rof hybrid system based on optical CDMA/TDM

Wadday

Ali

Albattat

2021

IJEECS

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“…Since the 1990s, after the introduction of the world wide web (WWW) [1], by Tim Berners Lee, a British scientist. Which was used to communicate, between scientists from all around the world.…”

Section: Introductionmentioning

confidence: 99%

Modern tools and current trends in web-development

Mishra

Rout

Salkuti

2021

IJEECS

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In this paper, a social media platform like LinkedIn and Facebook is made using MongoDB as a database. This paper aims to touch all the modern tools required to make an efficient web app, keeping in mind both the customer satisfaction and the ease for the developers to make their web designs, front-end and back-end. In this application, a user could make an account, add or delete details of their profile, education, and experience fields. The users could post, also comment and even like a post of other users. A monolithic architectural approach is used for simplicity in maintaining the database. Postman application programming interface (API) was used to check the working of the back-end. Git, Github, and Heroku were used to deploy the website. Node package manager (NPM) packages like bcrypt and validator are used to encrypt passwords and to validate a user during login. Media queries are used in cascading style sheets (CSS) to achieve a responsive design. Therefore, the users could view the website through a mobile phone, i-pad and also a personal computer (PC), maintaining the readability and design across all these devices.

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“…Several techniques been done to achieve an effective reduction of FWM. Wavelength swept WDM, the allocation of polarization and effective frequency, WDM/TDM (wavelength/time division multiplexing), and non-uniform spacing of channels ware applied [23][24][25][26][27][28][29][30]. These techniques are needing an extra complexity in system design or at least needing a compensator to improve the signal dispersion.…”

Section: Introductionmentioning

confidence: 99%

Transmitting audio via fiber optics under nonlinear effects and optimized tuning parameters based on Co-simulation of matlab and optisystemTM

Al-hayder¹,

Abd²,

Alkhafaji³

2020

IJECE

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Limitations of conventional wires such as copper wires are causing dispersion and distortion of the message signal for long distances communication especially for the wide bandwidths. The ability of fiber optic to overcome this problem is making it a dominant transmission medium. Despite of this major positive attribute of optic fibers, there is still a downside for using the fiber optic communication; that is the nonlinearity problem especially at the very high frequency bandwidth. For the first time, a desigen of an audio signal is suggested and executed in MatLab with an integration with OptiSystemTM software to discuss and solve this issu. The audio signal is then transmitted in different shapes of modulation signals (NRZ, RZ & RC) for different distances (100 km & 75 km) via a fiber optic media to be received in a receiving part of the simulated system. Three tests are used to do so. The first is the Quality-factor (Q-Factor) against the received power, second test is eye diagram performance and finally is the measuring of the amplitude of output (received) signal for each modulation signal shape using the Oscilloscope Visualizer. The NZR modulation signal was found to be the best one of the three used signals’ types in all three tests. The Q-factor for NRZ pulse shape (=12) was higher than that for RZ (=10) and RC (=8) for a 100 km distance at the same received power level.

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Radio over fiber system based on a hybrid link for next generation of optical fiber communication

Cited by 7 publications

References 15 publications

Design of high scalability multi-subcarrier rof hybrid system based on optical CDMA/TDM

Design of high scalability multi-subcarrier rof hybrid system based on optical CDMA/TDM

Modern tools and current trends in web-development

Transmitting audio via fiber optics under nonlinear effects and optimized tuning parameters based on Co-simulation of matlab and optisystemTM

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