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Literatura académica sobre el tema "GPON"

Autor: Grafiati

Publicado: 4 de junio de 2021

Última modificación: 4 de mayo de 2024

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Artículos de revistas sobre el tema "GPON"

Akymyshyn, M. М., N. V. Kuzmina y D. D. Ostapiv. "Isozymes of glutathione peroxidase in cow ovarian tissue under different physiological and pathological states of the gonad". Scientific Messenger of LNU of Veterinary Medicine and Biotechnologies 25, n.º 110 (18 de junio de 2023): 127–30. http://dx.doi.org/10.32718/nvlvet11021.

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The article presents a study of glutathione peroxidase (GPO) isozymes content in ovarian tissue under various physiological and pathological states of cow gonads. The ovarian tissue of 12 cows in different physiological conditions were selected for research, from which homogenates were prepared. The content of isozymes was determined in the supernatant after centrifugation by electrophoresis. After electrophoresis in a 7.5 % polyacrylamide gel and specific staining of the plates according to Lin C. L. and Weydert C. J., 5 bands of catalytically active isozymes of the enzyme (GPO1, GPO2, GPO3, GPO4, and GPO5) were established. They differed in electrophoretic mobility, intensity, and area of band staining. It has been proven that depending on the physiological state of the ovaries, the content of individual isozymes in the gonad tissue changed. In particular, it was found that the content of GPO1 for “late corpus luteum” and “follicular growth” was almost the same, and was in the range of 14.2–15.6 %, and for “early corpus luteum” it was 8.7–10.1 % lower (Р < 0.01). The content of GPO2 was high in “early corpus luteum” (19.9 ± 6.42 %), and in “late corpus luteum” and “follicular growth” it was lower on 11.0–13.2 % (Р < 0.01). The content of GPO3 during “follicular growth” and “early corpus luteum” was within 50.1–51.2 %, and during “late” it decreased on 4.5–5.6 %. According to changes in the physiological state of the ovary in the tissue of “late corpus luteum”, the content of GPO4 was the highest (26.0 ± 2.40 %), and under “follicular growth” and “early corpus luteum” it was lower on 10.2 (Р < 0.05) and 12.9 % (Р < 0.01), respectively. A high content of GPO5 was established in the ovarian tissue of “follicular growth” (10.8 ± 2.00 %), which tended to decrease by 2.8 % and by 4.8 %, respectively, in “early” and “late corpus luteum”. For ovarian tissue with hypofunction, compared to physiological conditions, a probable decrease in the content of the following isozymes was registered: GPO1 by 1.2–11.3 % (Р < 0.01), GPO4 – 6.8–19.7 % (Р < 0 .01) and GPO5 – 2.7–7.5 % (Р < 0.01), while the content of GPO3, on the contrary, increased by 23.6–29.2 % (Р < 0.05–0.01). The study of the dependence of the content of enzyme isozymes on different conditions of the gonad showed that the correlation ratio for the content of GPO isozymes in ovarian tissue under physiological conditions and hypofunction: medium strength was negative for GPO2 and GPO3 (η = 0.473 and 0.530), positive for GPO5 (η = 0.481 ), and strongly positive for GPO1 and GPO4 (η = 0.740 and 0.746).

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Tomasov, Adrian, Martin Holik, Vaclav Oujezsky, Tomas Horvath y Petr Munster. "GPON PLOAMd Message Analysis Using Supervised Neural Networks". Applied Sciences 10, n.º 22 (18 de noviembre de 2020): 8139. http://dx.doi.org/10.3390/app10228139.

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This paper discusses the possibility of analyzing the orchestration protocol used in gigabit-capable passive optical networks (GPONs). Considering the fact that a GPON is defined by the International Telecommunication Union Telecommunication sector (ITU-T) as a set of recommendations, implementation across device vendors might exhibit few differences, which complicates analysis of such protocols. Therefore, machine learning techniques are used (e.g., neural networks) to evaluate differences in GPONs among various device vendors. As a result, this paper compares three neural network models based on different types of recurrent cells and discusses their suitability for such analysis.

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Sun, Wen Feng y Ji Zhong Li. "Engineering Design Based on GPON+WLAN". Advanced Materials Research 694-697 (mayo de 2013): 2247–50. http://dx.doi.org/10.4028/www.scientific.net/amr.694-697.2247.

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Now the existing access networks have not met the requirements of users, especially the increase of wireless access requirement. So the upgrade or reform of the existing access networks becomes very necessary. To begin with, the technology and network structure of GPON and WLAN are introduced in detail, and then how to combine GPON and WLAN in the engineer is also illustrated clearly. According to the common cases in the engineer, two access ways of GPON+WLAN are also shown. Finally, the summary about the GPON+WLAN is discussed in the paper.

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Kang, Wen Hui, Xiao Hang Huang, Shi Cai Zhang y Xiao Yuan Zhang. "Realization of RIP Module on GPON OLT System". Advanced Materials Research 989-994 (julio de 2014): 4962–65. http://dx.doi.org/10.4028/www.scientific.net/amr.989-994.4962.

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As networks to be flattened, a direction has been put forward clearly by Telecom operators that Optical Line Terminals (OLT) of Gigabit Passive Optical Network (GPON) should become aggregation [1] OLTs, which makes them to work as both aggregation switches and edge access devices. According to this requirement, a scheme that realizes Routing [2] Information Protocol (RIP) on GPON OLT is put forward after deep analysis of GPON system [3] [4] [5] and RIP. Results shows that IP routing on GPON OLT is realized, which allows OLTs to work on the network layer, at the same time simplifies the broadband network levels and increases the reliability of the network.

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M. Atan, F., Nadiatulhuda Zulkifli, S. M. Idrus, N. A. Ismail y A. M. Zin. "Impact of security breach on the upstream delay performance of next generation gigabit passive optical networks". Bulletin of Electrical Engineering and Informatics 8, n.º 3 (1 de septiembre de 2019): 1059–65. http://dx.doi.org/10.11591/eei.v8i3.1600.

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The next generation passive optical networks (NG-GPON) such as long reach GPON is the future-proof solution to answer the continuous demands for access user bandwidth and network expansion. However, security which is yet to be addressed in NG-GPON needs urgent attention as it will become more critical due to much longer distance, denser user population and more network elements. In addition, the longer propagation delay in NG-GPON can also lead to a more complex bandwidth allocation mechanism that is expected to operate in a dynamic manner. Among the highlights of recommendations for future implementation are improvements in the security aspect and the use of dynamic bandwidth allocation (DBA) algorithm that suit the characteristics of long reach GPON. Current PON is exposed to degradation attack, a security breach that can harm how bandwidth fairness mechanism among ONUs work. Thus, this project proposes a secured DBA mechanism for NG-PON that could overcome this particular threat. In specific, a detection phase will be included in the DBA mechanism to sense and subsequently mitigate abnormal behaviours among ONUs that are harmful to the goal of DBA i.e. to ensure QoS among ONUs and traffics. At the same time, careful attention is given on the delay parameter as it is a critical parameter that can affect DBA performance in long reach GPON. In this paper, preliminary analysis is shown that reveal how possibility of threats increase with increasing of distance and network elements.

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Мухамедрахимова, Галия Исатаевна, Кариппула Увалиевич Мухамедрахимов, Арай Сарсенкалиевна Толегенова y Людмила Андреевна Соболева. "Некоторые особенности построения сети GPON на примере новых формирующихся районах Казахстана". Bulletin of Toraighyrov University. Energetics series, n.º 3.2020 (14 de octubre de 2020): 237–46. http://dx.doi.org/10.48081/pzra9063.

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В статье рассмотрены основные пути организации сети GPON на примере новых формирующихся районах Казахстана. Дан детальный анализ развития широкополосного доступа оптической сети GPON, рассмотрены: характерные черты технологии пассивной оптической сети для новых формирующихся районов Казахстана.

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Yuda Pramana Putra, I. Putu, Pande Ketut Sudiarta y Gede Sukadarmika. "Studi Perbandingan Jaringan Optik Eksisting dengan Gigabit Passive Optical Network (GPON) di Kampus Universitas Udayana Bukit Jimbaran". Jurnal SPEKTRUM 5, n.º 2 (17 de diciembre de 2018): 43. http://dx.doi.org/10.24843/spektrum.2018.v05.i02.p06.

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The purpose of this study is to compare the existing optical network conditions that use point to point technology with GPON network designed for Udayana University campuses area in Bukit Jimbaran Bali. The Existing optical network is currently able to serve only 14 buildings from 77 existing productive buildings due to the limited number of available optical cores.. It means in order to connect each building at the campuses area, it is required much more optical fiber. Alternatively is using Gigabit Passive Optical Network (GPON) technology. This research was conducted by analyzing the condition of the existing optical network and designing the GPON network. Here are compared some network feasibility parameters ie Link Power Budget, Rise Time Budget and Bit Error Rate. Then compare the use of cores, the number of subscribers as well as device estimation and transmission costs. The study found that to connect all of the buildings are GPON configuration required only 22 optical cores, compared to 154 cores for eksisting network designs. However, the GPON design has lower network quality but is simpler and much more economical if it is implemented for a wide network.

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Tokhmetov, А. Т., A. D. Tusupov y L. A. Tanchenko. "DATA ANALYSIS WHEN CREATING AN EXTENDED GIGABIT OPTICAL NETWORK". Bulletin Series of Physics & Mathematical Sciences 75, n.º 3 (15 de septiembre de 2021): 148–57. http://dx.doi.org/10.51889/2021-3.1728-7901.18.

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The article describes the application of data analysis, which allows, based on the processed experimental data, to obtain new knowledge about the behavior and capabilities of a gigabit passive optical network (GPON network). The description of the test bench of the GPON network is given. The paper studied the characteristics of semiconductor optical amplifiers used to increase the range of GPON networks, as well as their dependence on the input power and signal wavelength. For data processing, the MatLab mathematical calculation automation package and the OriginLab package for numerical data analysis and scientific graphics were used. It is shown that the use of an EDFA amplifier (an optical amplifier on an erbium-doped fiber) in the architecture of a gigabit passive optical network is the best choice and allows expanding the range of the GPON network from 20 kilometers to 60 kilometers.

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Horvath, Tomas, Petr Munster, Vaclav Oujezsky y Josef Vojtech. "Activation Process of ONU in EPON/GPON/XG-PON/NG-PON2 Networks". Applied Sciences 8, n.º 10 (16 de octubre de 2018): 1934. http://dx.doi.org/10.3390/app8101934.

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This article presents a numerical implementation of the activation process for gigabit and 10 gigabit next generation and Ethernet passive optical networks. The specifications are completely different because GPON, XG-PON and NG-PON2 were developed by the International Telecommunication Union, whereas Ethernet PON was developed by the Institute of Electrical and Electronics Engineers. The speed of an activation process is the most important in a blackout scenario because end optical units have a timer after expiration transmission parameters are discarded. Proper implementation of an activation process is crucial for eliminating inadvisable delay. An OLT chassis is dedicated to several GPON (or other standard) cards. Each card has up to eight or 16 GPON ports. Furthermore, one GPON port can operate with up to 64/128 ONUs. Our results indicate a shorter duration activation process (due to a shorter frame duration) in Ethernet-based PON, but the maximum split ratio is only 1:32 instead of up to 1:64/128 for gigabit PON and newer standards. An optimization improves the reduction time for the GPON activation process with current PLOAM messages and with no changes in the transmission convergence layer. We reduced the activation time from 215 ms to 145 ms for 64 ONUs.

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Dávila Arteaga, Marcos Lenin. "Estudio y diseño para la construcción de una red GPON FFTH, en una urbanización del cantón Manta – provincia de Manabí." Revista de Investigaciones en Energía, Medio Ambiente y Tecnología: RIEMAT ISSN: 2588-0721 2, n.º 1 (9 de enero de 2017): 57. http://dx.doi.org/10.33936/riemat.v2i1.945.

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Fiber to the home (FTTH) for development of conton Manta - in the study and design work for the construction of a network with Gigabit Passive Optical Network (GPON) is performed. Through research, you can come up with fiber to each household of urbanization, using GPON technology, so users can access telecommunications services faster and opportune times based on the concept that these networks reach speeds in Gigabit per second (Gbps) according to the needs of each client, becoming a useful technology to manage a modern and effective communication. Index Terms— GPON, FTTH, Fiber Optics, design, development, construction

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Tesis sobre el tema "GPON"

Oliveira, Adolfo Manuel Melim Machado de. "GPON over WDM-PON". Master's thesis, Universidade de Aveiro, 2013. http://hdl.handle.net/10773/12812.

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Mestrado em Engenharia Eletrotécnica e Telecomunicações
Due to the increased need for more bandwidth, access networks are evolving constantly. At the moment, GPON networks are the main choice in Europe, but due to the increased traffic in recent years, developing a new option for access networks defined NGPON2 as one of the main focuses in telecommunication research. In this document the current PON networks and the possible NGPON2 candidates will be studied. The main focus will be the possibility of designing a WDM-PON network while maintaining the main GPON architecture already implemented. By using SFPs, an example will be shown where a normal GPON transmission will be converted to another wavelength in order to show a possible implementation of a WDM network.
Com o aumento da necessidade de largura de banda nos últimos anos as redes de acesso encontram-se em constante evolução. Sendo que as redes GPON são de momento a principal escolha num âmbito europeu, devido ao aumento de tráfego nos últimos anos, a necessidade de uma nova tecnologia para redes de acesso NGPON2 é um dos principais focos de investigação em telecomunicações. Neste documento irá ser realizado um estudo das actuais redes PON e as possíveis opções para uma rede NGPON2. Maior ênfase será dado à possibilidade de realizar uma rede WDM-PON utilizando como base a arquitectura GPON já implementada. . Utilizando SFPs irá ser demonstrado como é possível converter uma transmissão GPON para outros comprimentos de onda com o objectivo de criar uma rede WDM.

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Guimarães, Marcelo Alves. "Transporte TDM em redes GPON". Universidade de São Paulo, 2011. http://www.teses.usp.br/teses/disponiveis/18/18155/tde-07042011-152547/.

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Neste trabalho analisamos e propomos a utilização de TDM (Time Division Multiplexing) nativo canalizado/estruturado em redes PON (Passive Optical Network) com padrão GPON (Gigabit Passive Optical Network), com ênfase na estrutura de transmissão do legado das redes de telefonia. O objetivo principal é obter um aumento na eficiência de banda transmitida através da fragmentação de sinais E1 sem que seja necessário o uso de técnicas de emulação de circuito (que reduzem a eficiência de banda devido à adição de cabeçalhos). Inicialmente, é descrito o transporte TDM em redes GPON, como efetuado pelos equipamentos comerciais atuais através de duas técnicas: CES - Circuit Emulation Service e TDM nativo não estruturado. Em seguida, é introduzido o conceito de comutação digital visando sua aplicação no transporte TDM nativo estruturado em redes GPON. Nesta etapa, é proposta uma solução para este transporte, é descrito o protocolo utilizado bem como seu funcionamento. Por fim, como prova de conceito, é apresentada uma implementação em HDL (Hardware Description Language) para FPGA (Field Programmable Gate Array).
In this work we analyze and propose the use of native channeled /structured TDM (Time Division Multiplexing) in GPON (Gigabit Passive Optical Network), with emphasis on the structure for transmission of the telephone network legacy. The main target is to achieve an increase in transmitted bandwidth efficiency by fragmenting E1 signals, thus avoiding the use of circuit emulation techniques (which reduce the bandwidth efficiency due to overhead addition). Initially, it is described in TDM transport in GPON networks, as it is performed in present commercial equipment by two techniques: CES - Circuit Emulation Service and Native TDM - unstructured. Next, we introduce the concepts of digital switching aiming its application on the transport of native and structured TDM in GPON. At this stage, we propose a transport solution, describe its protocol and functionalities. Finally, for concept proof, we present an implementation in HDL (Hardware Description Language) meant to FPGA (Field Programmable Gate Array) application.

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Holík, Martin. "Systém pro detekci rámce GPON". Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2018. http://www.nusl.cz/ntk/nusl-377125.

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This diploma thesis deals with GPON frame detection system. Partial problems of designing databases, optical networks and management of database system are described in theoretical parts. Practical parts this thesis are focused on design of system for detecting GPON frames and script for analysing of traffic.

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Gonçalves, Cláudio Marcelo Livramento. "GPON / FTTH: FTTH_fiber to the home". Master's thesis, Universidade da Madeira, 2009. http://hdl.handle.net/10400.13/87.

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As redes de comunicação de nova geração, onde se incluem as tecnologias de fibra óptica, têm sido uma área na qual tem havido imensa investigação e desenvolvimento. As tecnologias de FTTx, em especial a FTTH, já são uma realidade em milhares de habitações em variadíssimos países. A presente dissertação descreve um estudo da tecnologia GPON - Gigabit Passive Optical Network - nas instalações da EMACOM, Telecomunicações da Madeira, Unipessoal, Lda. Inicialmente são enumerados os requisitos necessários, quer seja por parte dos clientes como dos fornecedores. Em seguida apresenta-se o padrão do ITU-T G.984, contendo as várias camadas, tais como a camada física e a camada de convergência de transmissão, abordando também a estrutura das tramas e as principais características do referido padrão. Depois é dado a conhecer ao leitor os elementos que constituem uma rede GPON, sejam estes equipamentos passivos ou activos. Seguidamente foi descrito o planeamento para o projecto proposto onde foram estudados os vários tipos de arquitectura utilizados pelo FTTH e definiu-se qual seria a melhor opção para a zona urbana considerada. Utilizou-se o ArcMap da ESRI Portugal - Sistemas e Informação Geográfica, S.A, criando uma base de dados e um esquema da própria rede num mapa da freguesia de São Martinho. Utilizou-se o AutoCad, onde foram elaborados vários sinópticos da rede da área escolhida, nos quais englobam a rede de alimentação, e a rede de distribuição. Toda a informação ilustrada nos sinópticos foi colocada numa folha de cálculo de Excel sendo mais rápida a sua pesquisa. Posteriormente, criou-se uma lista de material com as quantidades necessárias a utilizar para a sua implementação. Para verificar a viabilidade do projecto em termos de potência óptica foi efectuado um cálculo do balanço de potência. Assim, é considerada a ligação mais distante para averiguar se existe potência óptica suficiente para cobrir essa ligação. Caso seja viável, então os outros pontos de distribuição ópticos com distâncias inferiores também estarão suficientemente alimentados em termos ópticos. São ainda abordados os vários tipos de perdas nas fibras ópticas, as definições de link power e link loss budgets. Finalmente, foram efectuados testes de simulação com o programa OptiSystem simulando a ligação usada para o cálculo de potência podendo-se assim comparar valores e verificar o desempenho do sistema através do diagrama de olho obtido.
Orientador: José Manuel Baptista

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Cardoso, Rodrigo Alves 1986. "Proposta, simulação e testes de arquitetura para redes ópticas passivas GPON e XG-PON". [s.n.], 2015. http://repositorio.unicamp.br/jspui/handle/REPOSIP/258924.

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Orientador: Edson Moschim
Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Elétrica e de Computação
Made available in DSpace on 2018-08-27T23:28:40Z (GMT). No. of bitstreams: 1 Cardoso_RodrigoAlves_M.pdf: 10022519 bytes, checksum: 6cc7c615004e4ecdf7f5acc095cd2d2f (MD5) Previous issue date: 2015
Resumo: O objetivo deste trabalho foi propor uma arquitetura de rede óptica passiva (PON) capaz de suportar um sistema GPON e permitir a evolução para redes PON de nova geração, ou XG-PON, de maneira que ambas as tecnologias possam coexistir na mesma infraestrutura de rede óptica. Na arquitetura foram considerados um mecanismo de proteção parcial e equipamentos que possibilitam sua efetiva construção. Foi apresentado um modelo matemático que permitiu a validação da arquitetura em função do cálculo do power budget de acordo com as premissas estabelecidas pelas normas das tecnologias PON. Um modelo de cálculo de disponibilidade de redes com proteção parcial foi apresentado. De posse destes modelos foram obtidos resultados do alcance máximo da rede, número máximo de clientes suportados, as classes requeridas de equipamentos GPON e XG-PON e a relação entre o comprimento do enlace protegido e a disponibilidade, sendo obtido um alcance máximo de 13 km e disponibilidade próxima a 5-9s para uma rede com proteção parcial. O desempenho do sistema foi validado utilizando o simulador Optisystem e testes realizados em equipamentos reais
Abstract: The aim of this work was to propose a Passive Optical Network architecture (PON) capable of supporting a GPON system and enable the evolution to next-generation PON network, or XG-PON, where both technologies can coexist in the same optical network infrastructure. In the architecture were considered a partial protection mechanism and devices that allow their deployment in real situations. It was presented a mathematical model to validation of the architecture based in the power budget calculation and in the premises established by the PON technologies recommendations. A mathematical model to calc availability in networks with partial protection was presented. Using these models were obtained the maximum reach of the network, maximum supported clients, which GPON and XG-PON equipment classes were required and the relationship between the length of the protected link and availability. It was obtained a maximum reach of 13 km and network availability next to 5-9s using partial protection. The system¿s performance was validated using the Optisystem simulator and tests performed in real equipment
Mestrado
Telecomunicações e Telemática
Mestre em Engenharia Elétrica

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Li, Jia. "10G GPON Management System Study and Implementation". Thesis, Linköping University, Department of Electrical Engineering, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-18817.

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This thesis includes the GPON management system concept study and implementation work to translate the command line interface management mechanism to a user friendly GUI (graphic user interface). The original system was developed in C program with a client-server structure. The new system retains the same communication structure and protocol interface between the OLT PON card and user workstations. On the workstation side, a new GUI management client application is developed in Java to offer the similar functionalities as the original one, and a totally new graphic real-time system traffic statistics function is integrated to make it easier for user to monitor system traffic information in real time.

The main object of this project is to study the GPON specifications, and understand GPON system working procedure and traffic transmission principle. On the other hand, ‘original system management application’ study is necessary including third party documentation reading and C code understanding. This study has resulted in the development of a new application in Java with third party user libraries and plug-ins. This new application has been tested using basic function tests executed in the GPON lab environment.

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Tomašov, Adrián. "Analýza GPON rámců s využitím strojového učení". Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2020. http://www.nusl.cz/ntk/nusl-413085.

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Táto práca sa zameriava na analýzu vybraných častí GPON rámca pomocou algoritmov strojového učenia implementovaných pomocou knižnice TensorFlow. Vzhľadom na to, že GPON protokol je definovaný ako sada odporúčaní, implementácia naprieč spoločnosťami sa môže líšiť od navrhnutého protokolu. Preto analýza pomocou zásobníkového automatu nie je dostatočná. Hlavnou myšlienkou je vytvoriť systém modelov za použitia knižnice TensorFlow v Python3, ktoré sú schopné detekovať abnormality v komunikácií. Tieto modely používajú viaceré architektúry neuronových sietí (napr. LSTM, autoencoder) a zameriavajú sa na rôzne typy analýzy. Tento systém sa naučí na vzorovej vzorke dát a upozorní na nájdené odlišnosti v novozachytenej komunikácií. Výstupom systému odhad podobnosti aktuálnej komunikácie v porovnaní so vzorovou komunikáciou.

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Kupka, Ondřej. "Software hlášení bezpečnostních incidentů v GPON síti". Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2021. http://www.nusl.cz/ntk/nusl-442394.

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This thesis focuses on development of software for security incident reporting from GPON networks. The theoretical part introduces the principles of GPON and provides an introduction to security incidents. The practical part is focused on the selection of suitable open-source systems and the design of an application in Python for the creation of alerts. The output of the work is the deployment of TheHive, Cortex and MISP systems and the creation of an application enabling the creation of various types of alerts based on prepared template. The thesis is finalized by a detailed description of deployment, custom configuration and testing.

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Girão, José Pedro de Sousa. "Extender box para redes ópticas passivas GPON". Master's thesis, Universidade de Aveiro, 2010. http://hdl.handle.net/10773/5606.

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Mestrado em Engenharia Electrónica e Telecomunicações
As Redes Ópticas Passivas de Acesso são hoje uma forte aposta dos operadores de telecomunicações. A constante necessidade de baixar os custos de instalação, levou o ITU a criar normas para regular a criação de dispositivos que aumentem a capacidade das redes GPON actualmente instaladas. Ao longo desta dissertação vamos analisar os requisitos definidos na norma GPON, para a implementação destes dispositivos, e avaliar os já existentes no mercado. Vão ser analisados os amplificadores ópticos existentes, e vai ser proposto um protótipo para uma Extender Box totalmente óptica. Esse protótipo vai ser implementado e serão feitos testes que aprovam o seu funcionamento em redes GPON
The Passive Optical Access Networks are today very important to the telecommunications operators. The constant need for lowering cost lead the ITU to create recommendations to allow the creation of devices that can increase the capability of the installed GPON networks. In the scope of this thesis we will analyze the requirements defined in the GPON recommendation to the implementation of such devices, and we will evaluate the available solutions in the market. We will analyze as well the optical amplifiers available and propose a prototype for an all-optical Extender Box. This prototype will be implemented and tests will be performed to validate its operation in GPON networks.

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Tavares, Ana Cristina Maia. "GPON and video over free space optics". Master's thesis, Universidade de Aveiro, 2013. http://hdl.handle.net/10773/11569.

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Resumen

Mestrado em Engenharia Electrónica e Telecomunicações
A procura por maiores larguras de banda nas redes de telecomunicações em curtos períodos de tempo tem crescido bastante. Mas tem-se verificado um desequilíbrio em termos de flexibilidade, eficácia e custo, uma vez que há zonas de difícil acesso, onde se torna caro levar uma fibra, e há ligações que podem ser apenas temporárias, outras de longo termo. É o chamado problema de “last mile bottleneck”. Uma das possibiblidades para ultrapassar estes obstáculos, é a utilização de uma tecnologia chamada óptica de meio livre (mais conhecida pela tradução inglesa “Free Space Optics”, ou FSO). Esta tecnologia, mesmo sendo já antiga, apresenta ainda alguns desafios em termos de perdas na atmosfera ou de possíveis desalinhamentos do emissor e receptor, por exemplo. Neste trabalho é feito um estudo de uma ligação de FSO, aplicando-lhe um sinal GPON, que é uma rede óptica passiva, bastante usada pelos operadores de telecomunicações hoje em dia. Em primeiro lugar é feita a caracterização do sinal GPON apenas em fibra, assim como do “Extender Box” existente no laboratório, e só depois se fez o teste desse sinal sobre uma secção de FSO. Aplicou-se também um sinal de vídeo para perceber se o facto de passar na secção de FSO afectava a qualidade do mesmo. São feitas também algumas simulações de modo a perceber de que forma é que as perdas na ligação e o BER são afectados pela turbulência e pelo comprimento da própria ligação.
The seek for higher bandwidth in telecommunications networks on short timelines has grown quite. But it has been found an imbalance in terms of flexibility, efficiency and cost, because there are areas of difficult access, where is expensive the deployment of fiber, and there are connections that could be only temporary, and others are long term. It’s called the last mile bottleneck problem. One of the possibilities to overcome these obstacles is the usage of a technology called Free Space Optics (FSO). That, even if already old, still faces some challenges in terms of atmospheric losses or possibility of misalignment between the emitter and the receptor, for example. In this work a FSO connection is studied, applying a GPON signal, which is a passive network, quite used by the telecommunications operators nowadays. First a GPON signal characterization is done, only with fiber cables, as well as the Extender Box existent in the laboratory, and then the test of that signal over a FSO section is carried out. A video signal was also applied in order to assess the impact of the FSO section in its quality. Some simulations are also done in order to understand how link losses and BER are affected by turbulence and by the link length itself.

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Libros sobre el tema "GPON"

EPON/GPON Ji shu wen da. Beijing: Ren min you dian chu ban she, 2010.

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min, Lang wei y Guo dong sheng. EPON/GPON cong yuan li dao shi jian. Bei jing: Ren min you dian chu ban she, 2010.

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Office, Great Britain Post. GPO Film Unit presents. London: Post Office, 1992.

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United States. Government Printing Office, ed. GPO warehouse building no. 4. Washington, D.C: U.S. Government Printing Office, 1987.

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Mike, Barden, Baldry Ron y Camberwell Press, eds. GPO posters: Post early 1920 - 1960. London: Camberwell Press, 1993.

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GPO access: Information for depository libraries. Washington, D.C: Library Programs Service, Superintendent of Documents, U.S. G.P.O., 1995.

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Dublin 1916: The siege of the GPO. London: Profile, 2009.

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Dublin 1916: The siege of the GPO. Cambridge, Mass: Harvard University Press, 2009.

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Stephen, Ferguson, ed. GPO staff in 1916: Business as usual. Cork, Ireland: Mercier Press, 2012.

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Cornelissen, Igor. De GPOe op de overtoom: Spionnen voor Moskou, 1920-1940. Amsterdam: Van Gennep, 1989.

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Capítulos de libros sobre el tema "GPON"

Skubic, Björn, Jiajia Chen, Jawwad Ahmed, Biao Chen y Lena Wosinska. "Dynamic Bandwidth Allocation in EPON and GPON". En Convergence of Mobile and Stationary Next-Generation Networks, 227–52. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2010. http://dx.doi.org/10.1002/9780470630976.ch8.

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Ansari, Nirwan y Jingjing Zhang. "Media Access Control and Resource Allocation in GPON". En Media Access Control and Resource Allocation, 23–28. New York, NY: Springer New York, 2012. http://dx.doi.org/10.1007/978-1-4614-3939-4_3.

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Angelopoulos, John D., Helen-C. Leligou, Theodore Argyriou y Stelios Zontos. "Prioritized Multiplexing of Traffic Accessing an FSAN-Compliant GPON". En Lecture Notes in Computer Science, 890–901. Berlin, Heidelberg: Springer Berlin Heidelberg, 2004. http://dx.doi.org/10.1007/978-3-540-24693-0_73.

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Gliwan, Ali, Pandelis Kourtessis y John M. Senior. "A G.984 GPON Exhibiting Multi-wavelength Protocol Functionalities". En Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, 411–17. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-30376-0_28.

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Shaghaghi, Ali Rais, Tim Glover, Michael Kampouridis y Edward Tsang. "Guided Local Search for Optimal GPON/FTTP Network Design". En Lecture Notes in Electrical Engineering, 255–63. New York, NY: Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-6154-8_25.

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Sıngh, Jasmeena y Amıt Kumar Garg. "Heuristic Solutions Supported by GPON for Future Telecommunication Optical Network". En Second International Conference on Computer Networks and Communication Technologies, 116–25. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-37051-0_13.

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Hayder Ali, Md y Mohammad Hanif Ali. "A Novel Approach for Wavelength Optimization in GPON Quad Play". En Algorithms for Intelligent Systems, 525–53. Singapore: Springer Singapore, 2022. http://dx.doi.org/10.1007/978-981-16-6332-1_45.

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Khare, Shalini, Amit Kumar Garg, Aditi Phophaliya, Vijay Janyani y Ghanshyam Singh. "Ring-Based Hybrid GPON Network with Inter-oNU Transmission Capability". En Intelligent Systems and Networks, 47–53. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-4725-6_7.

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Qin, Yixuan, Martin Reed, Zheng Lu, David Hunter, Albert Rafel y Justin Kang. "Fragmentation in a Novel Implementation of Slotted GPON Segmentation and Reassembly". En Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, 251–63. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-04648-3_18.

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Hwang, I.-Shyan, Bor-Jiunn Hwang y AliAkbar Nikoukar. "Delay Constraint CAC with Hierarchical DBA over GPON-LTE Converged Networks". En Transactions on Engineering Technologies, 29–43. Singapore: Springer Singapore, 2016. http://dx.doi.org/10.1007/978-981-10-0551-0_3.

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Actas de conferencias sobre el tema "GPON"

Selmanovic, Faruk y Edvin Skaljo. "GPON in Telecommunication Network". En 2010 International Congress on Ultra Modern Telecommunications and Control Systems and Workshops (ICUMT 2010). IEEE, 2010. http://dx.doi.org/10.1109/icumt.2010.5676500.

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Holik, Martin, Tomas Horvath y Vaclav Oujezky. "GPON Frame Data Processing". En 2019 International Workshop on Fiber Optics in Access Networks (FOAN). IEEE, 2019. http://dx.doi.org/10.1109/foan.2019.8933659.

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Nesset, Derek, Ruben Gorena, Morgan Potter y Martin Yates. "Economic Study Comparing Raman Extended GPON and Mid-span GPON Reach Extenders". En National Fiber Optic Engineers Conference. Washington, D.C.: OSA, 2010. http://dx.doi.org/10.1364/nfoec.2010.nmc2.

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Kaur, Ramandeep y Simranjit Singh. "A Review on Evolution Trends in Passive Optical Networks". En International Conference on Women Researchers in Electronics and Computing. AIJR Publisher, 2021. http://dx.doi.org/10.21467/proceedings.114.30.

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In this paper, the passive optical network (PON) evolution trend has been discussed. The literature of PON standards which are ATM PON (APON), Broadband PON (BPON), Gigabit PON (GPON), 10-Gigabit-capable passive optical networks (XG-PON) and next-generation PON2 (NG-PON2) has been reviewed extensively. From the literature review, a comparison of the PON technologies is made. The GPON, XG-PON and NG-PON2 are the most recent PON generations, and these are simulated to find the split per wavelength supported. The Q-factor below 6 is considered unacceptable in the analysis. The results show that the GPON can support 32 ONU when transmitted power set to 3dB. In the case of XG-PON, the Q-factor remains more than 6 for a split ratio up to 16. For the NG-PON2, the observed Q-factor is more than 6 for split up to 32. However, as the split increases above 32, the Q-factor falls below the acceptable level of 6.

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Raja, M. Kumarasamy, Dan Lei Yan y Wooi Gan Yeoh. "Burst Mode Receiver for GPON". En 2008 IEEE PhotonicsGlobal@Singapore (IPGC). IEEE, 2008. http://dx.doi.org/10.1109/ipgc.2008.4781421.

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Weis, E., R. Hölzel, D. Breuer y C. Lange. "GPON FTTH trial – Lessons learned". En Asia Communications and Photonics Conference and Exhibition. Washington, D.C.: OSA, 2009. http://dx.doi.org/10.1364/acp.2009.tubb2.

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Liu, Yang, Guoping Zhang y Qing Li. "WDM/TDM Hybrid GPON Technology". En 2011 Symposium on Photonics and Optoelectronics (SOPO 2011). IEEE, 2011. http://dx.doi.org/10.1109/sopo.2011.5780515.

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Oujezsky, Vaclav, Adrian Tomasov, Martin Holik, Vladislav Skorpil, Tomas Horvath y Michal Jurcik. "GPON Traffic Analysis with TensorFlow". En 2020 43rd International Conference on Telecommunications and Signal Processing (TSP). IEEE, 2020. http://dx.doi.org/10.1109/tsp49548.2020.9163575.

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Triningsih, Kurnia, Erna Sri Sugesti y H. Sofia Naning. "Multipartition DBA method on GPON". En 2017 IEEE 13th Malaysia International Conference on Communications (MICC). IEEE, 2017. http://dx.doi.org/10.1109/micc.2017.8311759.

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Carmona, David, Josep Prat, Ioannis Tomkos y Ma Pilar Sanchez Marco. "GPON unbundling for multioperator access". En 2012 XVth International Telecommunications Network Strategy and Planning Symposium (NETWORKS). IEEE, 2012. http://dx.doi.org/10.1109/netwks.2012.6381701.

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Informes sobre el tema "GPON"

Heckart, David G., Glen B. Roybal, Betty R. Walker, Thomas Joseph Pratt, Steven Allen Gossage, Sandra M. Trujillo, Bob Fischer et al. SNL evaluation of Gigabit Passive Optical Networks (GPON). Office of Scientific and Technical Information (OSTI), agosto de 2009. http://dx.doi.org/10.2172/1028953.

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Brenkosh, Joseph Peter y Jimmie V. Wolf. Evaluation of the Tellabs 1150 GPON multiservice access platform. Office of Scientific and Technical Information (OSTI), noviembre de 2014. http://dx.doi.org/10.2172/1323274.

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Brenkosh, Joseph Peter, Janice M. Vaughan, Glen B. Roybal, Brian Lee Amberg y David G. Heckart. Evaluation of the Tellabs 1150 GPON Multiservice Access Platform. Office of Scientific and Technical Information (OSTI), noviembre de 2012. http://dx.doi.org/10.2172/1055866.

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DeVivo, Joe. State, Territory, and NatureServe Conservation Listing Status of Taxa in National Park Service Units for use in Determining Appropriate Release of Data. National Park Service, 2023. http://dx.doi.org/10.36967/2272465.

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In 2013, Executive Order 13642, Making Open and Machine Readable the New Default for Government Information (GPO 2013), and associated policies issued by the Office of Management and Budget (OMB 2013) mandated that all data be made public by default unless those data are protected from release by one or more authorities. Staff at all National Park Service (NPS) units where the Inventory & Monitoring Division conducts activities identified resources that warrant some level of data protection, and default rules to be used when disseminating information about those resources. In nearly all cases, information about taxa on State and NatureServe lists of species of conservation concern were identified as taxa about which data must be protected from public release. This report documents the creation of a standard dataset of state-, territory-, and NatureServe-designated taxa for each NPS unit to use in developing public-access versions of inventory & monitoring datasets developed by the NPS Inventory and Monitoring Program.

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DeVivo, Joe. Federal Listing Status of Taxa in National Park Service Units for Use in Determining Appropriate Release of Data (March 2023). National Park Service, 2023. http://dx.doi.org/10.36967/2286464.

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In 2013, Executive Order 13642, Making Open and Machine Readable the New Default for Government Information (GPO 2013), and associated policies issued by the Office of Management and Budget (OMB 2013) mandated that all data be made public by default unless those data are protected from release by one or more authorities. Staff at all National Park Service (NPS) units where the Inventory & Monitoring Division conducts activities identified resources that warrant some level of data protection, and default rules to be used when disseminating information about those resources. In nearly all cases, information about taxa on the federal list of taxa with conservation status (USFWS 2019) were identified as taxa about which data must be protected from public release. This report documents the creation of a standard dataset of federally protected taxa for each NPS unit to use in developing public-access versions of inventory & monitoring data sets developed by the NPS Inventory and Monitoring Program.

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Canto, Patricia, ed. Heterogeneous Social Capitals: A New Window of Opportunity for Local Economies. Universidad de Deusto, 2010. http://dx.doi.org/10.18543/gwvw3770.

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In this paper we analyze the relationship between hot topics in economic development such as global knowledge pipelines (GKP), tacit knowledge (TK) and social capital (SC). In particular, echoing the work of Gertler (2003) and Bathelt et al. (2004) we stress that GKPs are important not only as conveyors of codified knowledge, but also of TK. In this paper, we make two additional operations; the first is extending the concept of TK to include systematically the concept of SC. Traditionally, TK tends to be conceived as individual experiential knowledge based on practice, in a way part of the human capital embodied in the highly-skilled individual expert. We’d rather include here also collective pools of social knowledge otherwise called SC since TK can be created and later transferred by wider communities. In this operation we benefit from Blacklers (2002) typology of knowledge that appropriately includes aspects of localized SC in the form of ‘encultured’ and ‘embedded knowledge’. In the second operation we extend Williams argument (2007) on the richness of migrants’ codified and tacit knowledge; in fact, we assert that TK flows do not rely only upon highly knowledgeable economic agents such as scientists, engineers and top managers, but on a broader spectrum of individual and collective agents that are and/or can be part of competitive GVC/GPN/GKP. This discussion has special importance for local production systems (LPS) such as clusters and districts, where TK flows and SC are transforming dramatically, thus need more thorough theoretical frameworks to represent these changing socioeconomic scenarios, as well as their real constraints and opportunities.

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Brisbane - Premises, Queen St. (next to GPO) (view 1). Reserve Bank of Australia, marzo de 2022. http://dx.doi.org/10.47688/rba_archives_pn-000053.

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Head Office - Extensions 1931-1933: Construction view from GPO - November 1931. Reserve Bank of Australia, marzo de 2022. http://dx.doi.org/10.47688/rba_archives_pn-000966.

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Commonwealth Bank - Branches - Brisbane - Queen Street (next to GPO) - 1924 (plate 49). Reserve Bank of Australia, marzo de 2021. http://dx.doi.org/10.47688/rba_archives_pn-000056.

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