ADVANTAGES OF AMOOFDM SYSTEM OVER OTHERTECHNOLOGIES: A REVIEW

2020 ◽  
Author(s):  
Х. Язбек ◽  
В.В. Беляев ◽  
И.М. Ткаченко
Keyword(s):  
Radio Wave ◽  
Semiconductor Optical Amplifier ◽  
Optical Amplifier ◽  
Access Networks ◽  
The Internet ◽  
Internet Service ◽  
Significant Percentage ◽  
Fiber To The Home ◽  
Frequency Multiplexing ◽  
The Cost

В настоящее время желание клиентов получить более высокую скорость доступа и снизить стоимость услуг за- ставляет операторов постоянно развивать свои сети. Кроме того, операторы вынуждены увеличивать размеры сетей доступа, чтобы обслужить как можно больше домохозяйств, охватить весь город, район крупного города или его окрестности в радиусе до 60 км. Также остаются актуальными проблемы ограниченного количества сервисов сети, недостаточной зоны покрытия и слишком высокой стоимости услуг для среднего абонента. Довольно много сетей все еще используют наземную беспроводную связь для организации каналов внутри или между городскими кварталами, но есть и операторы, которые используют технологию FTTH (оптоволокно до дома). В статье сравниваются производительность, пропускная способность и максимальный размер действующих сетей доступа и перспективных сетей, использующих адаптивно-модулированное оптическое ортогональное частотное мультиплексирование (AMOOFDM). Также показаны преимущества системы AMOOFDM, в которой в качестве модулятора интенсивности применяется полупроводниковый оптический усилитель. Access networks are under constant development looking for customers satisfaction by enhancing the Internet service speed and the cost of the service. However, a significant percentage of these networks still using the terrestrial radio wave telecommunications to distribute the service inside or between city blocks, while others use the fiber to the home (FTTH). The article compares the performance of the currently operated access networks to the adaptively modulated optical orthogonal frequency multiplexing (AMOOFDM) based access networks, according to the bit-rate, and the distance reach of these networks. The advantages of the AMOOFDM system, in which a semiconductor optical amplifier (SOA) is used as an intensity modulator, are shown.

A Contract Service Provider Model for Virtual Assets

2022 ◽  
Author(s):  
Thomas Hardjono ◽  
Alexander Lipton ◽  
Alex Pentland
Keyword(s):  
Business Model ◽  
Service Provider ◽  
Design Principles ◽  
End Users ◽  
Internet Service Provider ◽  
The Internet ◽  
Internet Service ◽  
Smart Contract ◽  
Service Models ◽  
The Cost

With the recent rise in the cost of transactions on blockchain platforms, there is a need to explore other service models that may provide a more predictable cost to customers and end-users. We discuss the Contract Service Provider (CSP) model as a counterpart of the successful Internet Service Provider (ISP) model. Similar to the ISP business model based on peered routing-networks, the CSP business model is based on multiple CSP entities forming a CSP Community or group offering a contract service for specific types of virtual assets. We discuss the contract domain construct which encapsulates well-defined smart contract primitives, policies and contract-ledger. We offer a number of design principles borrowed from the design principles of the Internet architecture.

Optimizing an Efficient Use of Internet Bandwidth for Higher Learning Institutions in Ghana

2018 ◽  
pp. 50-65
Author(s):  
Lewis M. Selby ◽  
Anthony Bawa
Keyword(s):  
Service Providers ◽  
Service Level Agreement ◽  
Service Level ◽  
Higher Learning ◽  
The Internet ◽  
Internet Services ◽  
Internet Service ◽  
Bandwidth Consumption ◽  
The Cost ◽  
Learning Institutions

This paper examines the availability of Internet services in Higher Learning Institutions (HLIs) for developing countries such as Ghana, with respect to the cost and usage. We looked at the source of Internet services and the bandwidth package for some Higher Learning Institutions in Accra, Ghana. One of the key objectives of this study is to design and simulates an efficient Internet bandwidth usage for Higher Learning Intuitions. We examined the cost of bandwidth package offered by the Internet service providers to these higher institutions. In looking at the cost we also included the bandwidth packages offered, the type of Internet connection and the service level agreement with the ISPs. In the study, we looked at how the Internet is distributed to these institutions and the equipment used in the distribution of the Internet services. Ipswich Whatsup Gold software was used to monitor the network infrastructure for one of the institutions in the study. We went further to monitor the bandwidth consumption for Ghana Technology University College, one of the institutions in the study, to monitor their bandwidth consumption and traffic flow in the network. In designing an efficient bandwidth management for the Higher Learning Institution, we model and configured a network in Packet tracer using a proxy cache box. This technique allows for an efficient bandwidth planning capacity to manage the bandwidth consumptions. At the end of the study, we modeled a network using cache box to restrict and minimize bandwidth usage and thus making it less expensive for the Higher Learning Institutions.

Simulation Research on 40Gbit/s Hybrid WDM/TDM PON System

2014 ◽  
Vol 602-605 ◽  
pp. 3035-3038
Author(s):  
Jiang Nan Yang ◽  
Li Qun Huang ◽  
Xue Li Tang
Keyword(s):  
Semiconductor Optical Amplifier ◽  
High Speed ◽  
Optical Network ◽  
Optical Amplifier ◽  
Experimental Results ◽  
Passive Optical Network ◽  
Long Distance ◽  
Simulation Research ◽  
Wavelength Division ◽  
The Cost

Recently, wavelength division mulplexing (WDM) technology has been extensively studied, and various WDM-PON architectures have been proposed for next-generation passive optical network (PON). In this paper, we combine the TDM with WDM architecture to achieve high-speed, long-distance transmission. To reduce the cost of ONU, we achive the colorless ONU by placing a Reflective Semiconductor Optical Amplifier (RSOA) in the uplink transmission. We build the whole architecture to simulate the Hybrid WDM/TDM PON System in Optisystem and the experimental results prove that the architecture is feasible and reasonable.

Asymmetric MQW Semiconductor Optical Amplifier for Next-Generation Optical Access Networks

CLEO: 2013 ◽  
2013 ◽  
Author(s):  
Julie Nkanta ◽  
Ramón Maldonado-Basilio ◽  
Abdessamad Benhsaien ◽  
Kaiser Khan ◽  
Sawsan Abdul-Majid ◽  
...  
Keyword(s):  
Semiconductor Optical Amplifier ◽  
Optical Amplifier ◽  
Access Networks ◽  
Optical Access Networks ◽  
Next Generation ◽  
Optical Access

Design and Simulation of Smart Control System for Internet Traffic Distribution on Servers by Using Fuzzy Logic System

2018 ◽  
Vol 2 (1) ◽  
Author(s):  
Raid Daoud ◽  
Yaareb Al-Khashab
Keyword(s):  
Fuzzy Logic ◽  
Control System ◽  
Input Parameter ◽  
Traffic Density ◽  
The Internet ◽  
Linguistic Variables ◽  
Internet Service ◽  
Traffic Distribution ◽  
Smart Control ◽  
High Level

The internet service is provided by a given number of servers located in the main node of internet service provider (ISP). In some cases; the overload problem was occurred because a demand on a given website goes to very high level. In this paper, a fuzzy logic control (FLC) has proposed to distribute the load into the internet servers by a smart and flexible manner. Three effected parameters are tacked into account as input for FLC: link capacity which has three linguistic variables with Gaussian membership function (MF): (small, medium and big), traffic density with linguistic variables (low, normal and high) and channel latency with linguistic variables (empty, half and full); with one output which is the share server status (single, simple and share). The proposed work has been simulated by using MATLAB 2016a, by building a structure in the Fuzzy toolbox. The results were fixed by two manners: the graphical curves and the numerical tables, the surface response was smoothly changed and translates the well-fixed control system. The numerical results of the control system satisfy the idea of the smart rout for the incoming traffics from the users to internet servers. So, the response of the proposed system for the share of server ratio is 0.122, when the input parameter in the smallest levels; and the ratio is 0.879 when the input parameters are in highest level. The smart work and flexible use for the FLC is the main success solution for most of today systems control.

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