Expandable high-capacity wavelength division multiplex-over-optical code division multiple access millimeter wave radio-over-fiber system

Eghbal, Morad Khosravi; Shadaram, Mehdi

doi:10.1117/1.oe.58.1.016118

Cited by 3 publications

(4 citation statements)

References 35 publications

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“…The innovative integration of DWDM-PON and millimeter-wave wireless transmission will become mainstream in the foreseeable future, given that they enhance user data rate, end-to-end connectivity, connection density, and traffic volume density at a reduced cost. Such a development trend is similar to the predictions made by other scholars [14,41]. In conclusion, the results of the current study correspond with the development trends of this emerging domain.…”

Section: Discussionsupporting

confidence: 92%

Key Technologies and Development Trends of 5G Optical Networks

Chang

2019

Applied Sciences

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With the development of 5G, 5G optical networks have gradually received increasing attention from scholars. However, most studies have focused on discussing the technical or market aspect. Furthermore, their findings have not provided a panorama of the technologies in the 5G domain, nor have they provided a detailed understanding of the key technologies and development trends. An optical network is an indispensable type of infrastructure for the development of 5G. Therefore, defining key technologies in this domain is particularly crucial. The present study used patents for 5G optical networks as the basis of its analysis and constructed a technology network using a network analysis method. Research results indicated that the key technologies provided by 5G optical networks include wireless communication network facilities and local resource management (H04W88 and H04W72), selection arrangements for multiplex systems (H04Q11), and arrangements enabling multiple uses of the transmission path (H04L5). The maturation of optical component technology has paved the way for multiplex communication system technology to flourish and made it one of the key technologies in the development of 5G. Additionally, an analysis of top patentees revealed that information technology companies are the main force in developing 5G optical network technologies. Thus, driven by the market, 5G optical communication has become the technical focus of the private sector. In this study, the researchers constructed a technology network model to explore the technology development trends, and the results may serve as a reference for the government in observing emerging technologies.

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Section: Discussionsupporting

confidence: 92%

Key Technologies and Development Trends of 5G Optical Networks

Chang

2019

Applied Sciences

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“…At the same time, while fiber-optic technology can provide tremendous bandwidth (capacity) [2], [3] low signal attenuation and high security, it does not support mobility. Thus, the combined use of fiber optics for point-to-point communications and radio frequency (RF) waves for short-range wireless communications can provide high capacity along with mobility [4], [5], [6], [7], [8].…”

Section: Need For Creation Of Fiber Optic Simulation Laboratorymentioning

confidence: 99%

“…For high capacity transmissions, use of broadband fiber optic communication systems such as wavelength division multiplexing (WDM) systems are continuously advancing due to the spread of technologies that support it [6], [7]. Hybridization of various techniques, such as radio-over-fiber along with new modulation techniques, increases the capacity of fiber optic networks to fulfill the capacity requirements of the next generation of mobile communication (5G).…”

Section: Need For Creation Of Fiber Optic Simulation Laboratorymentioning

confidence: 99%

Creation of an engineering course: design and simulation of high-capacity fiber optic systems utilizing VPI-photonics

Shadaram

Sarkar

Eghbal

2019

Fifteenth Conference on Education and Training in Optics and Photonics: ETOP 2019

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In recent years, the importance of training skillful fiber optic engineers capable of designing and analyzing fiber optic links to deliver the enormous capacity needed for the next generation of mobile phones (5G) has been proven in industry. A comprehensive curriculum for such courses should undoubtedly comprise both theoretical and hands-on skills to better prepare the engineers before entering industry. The hands-on skills can be established through experimenting with real fiber optic links. However, having access to an equipped fiber optic laboratory imposes a significant cost to the academic institutions. Therefore, similar hands-on experiences can be delivered by software simulation of the physical signal generation and propagation. Thus, identifying an efficient yet powerful tool in simulating fiber optics components and devices is of utmost importance toward successfully rendering an understanding of the physical phenomena to the graduates. This paper aims to analyze the necessity of incorporating hands-on experience through software simulation and then it suggests the course topics and the learning outcomes expected to be achieved from this course. In addition, it investigates the feedbacks obtained from graduate engineering students throughout an actual course offered on fiber optic communication and demonstrates the assessment of the strength and weaknesses of the method. Finally, it introduces a powerful software package capable of simulating a variety of optical systems and devices frequently used in a typical fiber optic link and presents the performance analysis of this software package in addressing primitive and complex problems arising in fiber optics.

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“…On the other hand, multiple access interference (MAI) is the big problem facing the researchers in optical CDMA area, which is caused by the overlapping signaling between the users. Few researches of hybrid systems have been [1][2][3][4][5][6][7][8]. However the effect of FWM has not been addressed yet.…”

Section: Introductionmentioning

confidence: 99%

Hybrid optical CDMA and DWDM system implemented under the influence of Non-linear effects

Alsowaidi

Eltaif

Mokhtar

2019

IJEECS

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<span>A hybrid optical CDMA-DWDM system accommodating 12 optical CDMA users carried by 5 DWDM wavelengths at a data rate of 60Gb/s/wavelength with channel spacing of 0.4nm is implemented under the effect of four-wave mixing (FWM). It was found that the FWM effect could be minimized by the use of CDMA technology, where the energy of each bit is spread over the optical sequence code. Over a distance of 105.075km, significant performance of all optical CDMA users in terms of the BER is achieved. The results reveal that the inter-symbol interference (ISI) can be mitigated when the interval of optical signature sequence code is squeezed into 25% of the bit duration. </span>

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Expandable high-capacity wavelength division multiplex-over-optical code division multiple access millimeter wave radio-over-fiber system

Cited by 3 publications

References 35 publications

Key Technologies and Development Trends of 5G Optical Networks

Key Technologies and Development Trends of 5G Optical Networks

Creation of an engineering course: design and simulation of high-capacity fiber optic systems utilizing VPI-photonics

Hybrid optical CDMA and DWDM system implemented under the influence of Non-linear effects

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