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Broadband access technologies

Pereira, João Paulo; Pires, José Adriano
Fonte: Instituto Politécnico de Bragança Publicador: Instituto Politécnico de Bragança
Tipo: Conferência ou Objeto de Conferência
ENG
Relevância na Pesquisa
36.88%
Broadband technologies have view great growth over the past decade. But, the main part of this development and growth has been in the core networks, and the capacity of the access network to delivery broadband services remains as a challenge ("last mile problem"). The access network remains a bottleneck in terms of the bandwidth and service quality it affords the end user. By other side, the access network is much more spread geographically and covers larger areas. Then, this part of the network is usually the most expensive component in terms of capital investment and OAM cost. Some studies reefer that this networks required 70% of the total investment. Several access technologies can be used in this part of the network, which can be used to resolve the bandwidth bottleneck and the investment problem: xDSL, HFC, FTTx, FWA, WiMAX, PLC, Satellite, etc. This paper presents a methodology and a tool that compare and evaluate broadband access technologies. The paper presents a techno-economic analysis of eight broadband technologies for access networks: digital subscriber line (DSL), hybrid fiber coax (HFC), power line communications (PLC), fiber to the home (FTTH), fiber to the curb (FTTC), fiber to the cabinet (FTTCab)...

Broadband for Africa : Developing Backbone Communications Networks

Williams, Mark D. J.
Fonte: World Bank Publicador: World Bank
Relevância na Pesquisa
36.97%
Many countries in Sub-Saharan Africa see information and communication technology (ICT) as a necessary foundation for long-term economic development. While the region has been very successful in increasing access to basic voice communications, there has been no comparable improvement in broadband connectivity. In fact, the broadband access gap between Sub-Saharan Africa and the rest of the world is getting wider just as the gap in basic voice communications is getting smaller. Increasing access to broadband connectivity is therefore emerging as a high priority for policy makers across the continent. This book begins with a brief review of the ICT market and considers the extent of demand for broadband and the ICT services that high-capacity backbone networks make possible. This is followed by a review of the existing coverage of backbone networks in the region, a discussion of how this compares with other parts of the world, and an analysis of the possible explanations for the current pattern of network development. Finally...

Building Broadband : Strategies and Policies for the Developing World

Kim, Yongsoo; Kelly, Tim; Raja, Siddhartha
Fonte: World Bank Publicador: World Bank
Relevância na Pesquisa
37.1%
This book suggests an ecosystem approach to broadband policy that could help in the design of strategies, policies, and programs that support network expansion, have the potential to transform economies, improve the quality and range of services, enable application development, and broaden adoption among users. To identify emerging best practices to nurture this ecosystem, this volume analyzes the Republic of Korea and other leading broadband markets. It identifies three building blocks to support the growth of the broadband ecosystem: defining visionary but flexible strategies, using competition to promote market growth, and facilitating demand. An important but often neglected building block is demand facilitation. This includes raising awareness about the benefits of broadband and improving affordability and accessibility for the largest number of users. Successful countries have often focused on creating a suite of useful applications that increase the relevance of broadband to the widest base of users. Programs to mainstream information and communication technology (ICT) use in education...

Broadband Wireless Access in Egypt

World Bank
Fonte: Washington, DC Publicador: Washington, DC
EN_US
Relevância na Pesquisa
37.02%
This paper discusses current and future developments in wireless technology and infastructure in Egypt. One of the important regulatory decisions made in Egypt is that policy related to broadband wireless will be technology neutral. Consequently, the regulator cannot decide about which operators should use specific technologies. This approach is beneficial for the overall development of the market and deployment of networks because: It allows operators and service providers to decide on which technology or mix of technologies is best for given service and market requirements, budget outlays, and deployment scenarios. Such an approach promotes technical and economic efficiency since each service providerwill attempt to maximize revenues and their subscriber base. The flexibility allows the regulator to ensure that the market can deploy the latest technology with the least regulatory overhead. Allowing only one technology into the market place will restrict the range of choices available to consumers.

Socio-Economic Assessment of Broadband Development in Egypt

World Bank
Fonte: Washington, DC Publicador: Washington, DC
EN_US
Relevância na Pesquisa
37.12%
The Government of Egypt has recognized broadband as being of strategic importance to the country´s economic and social development and it is developing a new strategy to develop access and use of broadband networks and services. As a specific target of this strategy, the government seeks to increase broadband penetration to 20 connections per 100 inhabitants by 2013. This report is the result of the second part of the existing reimbursable technical assistance on communications by which the World Bank has been providing assistance to the government of Egypt in the development of this broadband strategy. The objective of this particular assignment is to support the policy making process to develop broadband services and infrastructure throughout Egypt and achieve substantial economic impact in the economy including specific intermediary sectors. This assignment builds of the outcomes of the previously delivered study (strategic options for broadband development, 2010) and it uses both qualitative and quantitative approaches to provide specific advisory outputs.

Broadband Networks in the Middle East and North Africa : Accelerating High-Speed Internet Access

Gelvanovska, Natalija; Rogy, Michel; Rossotto, Carlo Maria
Fonte: Washington, DC: World Bank Publicador: Washington, DC: World Bank
EN_US
Relevância na Pesquisa
37.06%
Just as the steam engine was the driving force behind the Industrial Revolution, broadband Internet is today seen as critical to the transition to knowledge-intensive economies across the world. As a general purpose technology, broadband Internet is considered as a fundamental driver of economic growth and social development, releasing the innovative potential and energy of previously disenfranchised members of the population. Many of the countries in the Middle East and North Africa region (MENA) now recognize that broadband Internet is crucial to their efforts to reduce poverty and create job opportunities, especially for their young populations and for women. The report re-emphasizes the important contribution that broadband Internet can make and assesses the status of existing infrastructure in at least 18 MENA countries. While there is significant potential across the region, however, the take-up of broadband Internet has been slow, and the price of broadband service is high in many countries. In large part, this stems from market structures that, too often, reflect the past when telecommunications were treated as a monopoly utility service. The report finds that there are gaps in infrastructure regionally with no connectivity between neighboring countries in some cases. Similarly...

Broadband in Russia

Rossotto, Carlo Maria; Gelvanovska, Natalija; Hohlov, Yuri; Maciule, Vaiva; Shaposhnik, Sergei
Fonte: World Bank, Washington, DC Publicador: World Bank, Washington, DC
Tipo: Trabalho em Andamento
EN_US
Relevância na Pesquisa
37.15%
It is widely recognized that broadband is of fundamental importance to the social and economic development of a nation. The focus of the paper is on infrastructure-related actions; measures to stimulate demand for broadband are, therefore, only marginally addressed. This paper aims to provide a platform for debate with the Russian counterparts in the sector, and to discuss the measures needed to develop broadband in support of actions aimed at economic growth. This paper examines the broadband market in Russia and preconditions for its sustainable development. It begins by presenting arguments demonstrating the importance of broadband to the overall economic development of Russia, including from the perspective of diversification of the economy and new job creation. The paper benchmarks Russia s broadband performance with Organization of Economic Cooperation and Development (OECD) comparators, as well as with other nations leading the way in broadband diffusion. The paper takes stock of the existing broadband market structure in Russia and its main players as they stand today...

Modal Analysis and Synthesis of Broadband Nearfield Beamforming Arrays

Abhayapala, P. Thushara D
Fonte: Universidade Nacional da Austrália Publicador: Universidade Nacional da Austrália
Tipo: Thesis (PhD); Doctor of Philosophy (PhD)
EN
Relevância na Pesquisa
36.88%
This thesis considers the design of a beamformer which can enhance desired signals in an environment consisting of broadband nearfield and/or farfield sources. The thesis contains: a formulation of a set of analysis tools which can provide insight into the intrinsic structure of array processing problems; a methodology for nearfield beamforming; theory and design of a general broadband beamformer; and a consideration of a coherent nearfield broadband adaptive beamforming problem. To a lesser extent, the source localization problem and background noise modeling are also treated. ¶: A set of analysis tools called modal analysis techniques which can be used to a solve wider class of array signal processing problems, is first formulated. The solution to the classical wave equation is studied in detail and exploited in order to develop these techniques. ¶: Three novel methods of designing a beamformer having a desired nearfield broadband beampattern are presented. ...; yes

Understanding broadband adoption in rural Australia

Rao Hill, S.; Burgan, B.; Troshani, I.
Fonte: MCB Univ Press Ltd Publicador: MCB Univ Press Ltd
Tipo: Artigo de Revista Científica
Publicado em //2011 EN
Relevância na Pesquisa
36.93%
Purpose – The purpose of this paper is to propose and test a model concerning broadband adoption in a rural setting. Design/methodology/approach – A computer-aided telephone survey was conducted to collect data to validate the proposed model in rural Australia. Findings – It was found that relative advantage, utility outcomes, and facilitating conditions play a crucial role in explaining broadband adoption behavior amongst rural Australian households. Practical implications – The key challenges to stakeholders involved in promoting broadband adoption in these settings are discussed in light of the findings. Originality/value – A more realistic approach at household level was adopted to investigate broadband adoption in a rural setting. The theoretical framework offers a comprehensive view of broadband adoption applicable to rural Australia.; Sally Rao Hill, Barry Burgan and Indrit Troshani

The Mobile Broadband and Fixed Broadband Battle in Swedish Market: Complementary or substitution?

SRINUAN, Pratompong; SRINUAN, Chalita; BOHLIN, Erik
Fonte: Instituto Universitário Europeu Publicador: Instituto Universitário Europeu
Tipo: Trabalho em Andamento Formato: application/pdf; digital
EN
Relevância na Pesquisa
37.02%
This paper aims to investigate the current broadband situation in Swedish market, in particular whether the mobile broadband (MBB) is a complementary or substitute service to fixed broadband (FBB) by using multinomial logit model. The data is collected from the Post- och telestyrelsen (PTS) survey in 2009 together with a secondary data on price of broadband service for each service providers. The findings indicate that price and type of housing are the major determinant for broadband connections. In addition, the living area and service provider affect the probability of using broadband. Considering the own price elasticities, cable is more inelastic compared to DSL, LAN/Fiber and MBB while the cross price elasticities show that MBB is complementary service to FBB in Sweden at this stage. However, the cross price elasticities of FBBs and MBB report that there is high possibility that MBB could be substitution service to FBB in the near future.

Compare affordability, capability and availability of broadband services between Australia and Canada and evaluate how these demand factors, government initiatives and regulation determine broadband deployment

Lowe, Arianwyn
Fonte: Universidade Nacional da Austrália Publicador: Universidade Nacional da Austrália
Tipo: Relatório
Relevância na Pesquisa
37.08%
Broadband is seen as a key driver of future national productivity however Australia is ranked 19th out of the 23 OECD countries for broadband take-up. In contrast, Canada has a strong broadband penetration rate of approximately 40%. The two countries have the same legal, economic and telecommunications frameworks, and contain relatively small populations within vast expanses of land and yet the positioning of the Canadian information economy is by far superior. This report asserts that Australia's pricing of broadband services is relatively expensive when compared to Canadian prices for equivalent services however there is no significant price differential associated with dial-up fees between the two countries. Broadband service contracts drawn up by Australian ISPs include monthly charges which often exceed the $60 mark and are full of restricting additional fees. These packages are no match for Canadian firms' enticing low-entry monthly charges of approximately $AUD27.15. Broadband services allow faster, dedicated connections which do not interfere with the phone line. However, customers need a more compelling benefit then a new, better way of doing things to persuade them to pay twice as much as dial-up services. A 'killer application' which is indispensable to many consumers and exclusive to broadband is required to boost demand. Research in the field of broadband content should be encouraged and content producers...

Broadband Strategies Handbook

Kelly, Tim; Rossotto, Carlo Maria
Fonte: Washington, DC: World Bank Publicador: Washington, DC: World Bank
Tipo: Publications & Research; Publications & Research :: Publication
ENGLISH
Relevância na Pesquisa
37.16%
The handbook consists of seven chapters and two appendixes that look at how broadband is defined, why it is important, and how its development can be encouraged. Throughout the handbook, broadband is viewed as an ecosystem consisting of supply and demand components, both of which are equally important if the expansion of broadband networks and services is to be successful. In addressing the challenges and opportunities to which broadband gives rise, the handbook discusses the policies and strategies that government officials and others should consider when developing broadband plans, including what legal and regulatory issues to address, what broadband technologies to choose, how to facilitate universal broadband access, and how to generate demand for broadband services and applications. Chapter one, 'building broadband,' introduces the concepts of broadband by defining the term 'broadband' more conventionally (that is, speed or functionality) as well as explaining how this handbook seeks to define the term as broadband comes to be seen as an enabling platform. Chapter two...

Broadband Low-Noise CMOS Mixers For Wireless Communications

Jiang, FAN
Fonte: Quens University Publicador: Quens University
Tipo: Tese de Doutorado
EN; EN
Relevância na Pesquisa
36.88%
In this thesis, three broadband low-noise mixing circuits which use CMOS 130 nm technology are presented. As one of the first few stages in a receiving front-end, stringent requirements are posted on mixer performance. The Gilbert cell mixers have presented excellent properties and achieved wide applications. However, the noise of a conventional active Gilbert cell mixer is high. This thesis demonstrates both passive and active mixing circuits with improved noise performance while maintaining the advantages of the Gilbert cell-based mixing core. Furthermore, wide bandwidth and variable gain are implemented, making the designed mixers multi-functional, yet with compact sizes and low power consumptions. The first circuit is a passive 2x subharmonic mixer that works from 4.5 GHz to 8.5 GHz. The subharmonic mixing core is a two-stage passive Gilbert cell driven by a quadrature LO signal. Together with a noise-cancelling transconductor and an inverter-based TIA, this subharmonic mixer possesses an excellent broadband conversion gain and a low noise figure. Measurement results show a high conversion gain of 16 dB and a low average DSB NF of 9 dB. The second design is a broadband low-noise variable gain mixer which operates between 1 and 6 GHz. The transconductor stage is implemented with noise cancellation and current bleeding techniques. Series inductive peaking is used to extend the bandwidth. Gain variation is achieved by a current-steering IF stage. Measurements show a wide gain control range of 13 dB and a low noise performance over the entire frequency and gain range. The lowest DSB NF is 3.8 dB and the highest DSB NF is 14.2 dB. The Third design is a broadband low-noise mixer with linear-in-dB gain control scheme. Using the same transconductance stage with the second circuit...

Mudança técnica e políticas públicas : exepriências internacionais na difusão da banda larga e o caso brasileiro; Technical change and public policies : international experiences in broadband diffusion and the Brazilian case

Cristiane Vianna Rauen
Fonte: Biblioteca Digital da Unicamp Publicador: Biblioteca Digital da Unicamp
Tipo: Tese de Doutorado Formato: application/pdf
Publicado em 22/02/2013 PT
Relevância na Pesquisa
37.07%
A presente tese analisa o processo de mudança na agenda de políticas de difusão de serviços de telecom face ao processo de mudança técnica que deu origem às redes de banda larga. Inserida no paradigma tecnoeconômico da atualidade, o paradigma das TICs, o surgimento das redes de banda larga acarretou em uma série de impactos na dinâmica socioeconômica dos dias atuais - como alteração nas formas de comunicação e de acesso à informação da sociedade, alteração na estrutura organizacional do setor de telecom e dinamização macroeconômica de forma geral -, o que levou a um processo de anomalias no paradigma político anterior aplicável a esse setor, em particular, com relação ao escopo e às formas de difusão dos serviços. Diante disso, as experiências internacionais passaram a incluí-la como item das agendas de difusão de serviços em substituição aos tradicionais serviços de telefonia fixa. Observou-se que a maior parte das experiências internacionais não fez isso com base na introdução da banda larga nas agendas de regulação para universalização, mas sim, incluindo-a nas agendas de regulação para competição, em especial, entre - plataformas, e em programas públicos voltados à expansão desse serviço...

Broadband adoption in regional and urban households

Hill, S.R.; Troshani, I.; Burgan, B.
Fonte: International Association for Computer Information Systems Publicador: International Association for Computer Information Systems
Tipo: Artigo de Revista Científica
Publicado em //2014 EN
Relevância na Pesquisa
37%
Broadband offers key advantages as a communication infrastructure, including efficiency and cost savings which can stimulate productivity, innovation, and ultimately economic growth and social well-being. This paper presents a comparative study on the adoption of broadband in urban and regional areas. It proposes a model concerning broadband adoption which we validate with data collected using a computer-aided telephone survey. We find that relative advantage, utility outcomes, and facilitating conditions play a crucial role in explaining the broadband adoption behavior of both urban and regional household users. In a dynamic environment where technologies are changing quickly, our findings about broadband adoption drivers are useful to stakeholders such as internet service providers, regulators, broadband application developers for encouraging further broadband and application adoption and developments in communication space in both regional and urban areas.; Sally Rao Hill, Indrit Troshani, Barry Burgan

BROADBAND INTERNET: A PROSPECTIVE EXPLORATORY STUDY ON ITS PENETRATION, CONNECTION TECHNOLOGIES, AND IMPACTS ON BRAZIL IN 2020; INTERNET BANDA LARGA: UM ESTUDO PROSPECTIVO EXPLORATÓRIO SOBRE A SUA PENETRAÇÃO, TECNOLOGIAS DE CONEXÃO E IMPACTOS NO BRASIL EM 2020 DOI: 10.5773/rai.v9i2.675

Spers, Renata Giovinazzo; Wright, James Terence Coulter; Silva, Antonio Thiago Benedete
Fonte: Universidade de São Paulo. Economia, Administração e Contabilidade Publicador: Universidade de São Paulo. Economia, Administração e Contabilidade
Tipo: info:eu-repo/semantics/article; info:eu-repo/semantics/publishedVersion; Formato: application/pdf
Publicado em 04/07/2012 POR
Relevância na Pesquisa
36.93%
This study aimed to explore the evolution of broadband Internet penetration in Brazil in 2020 and the impacts on the population and the Brazilian economy. The Delphi Method of consultation with experts was used, in which 98 respondents in Round 1 and 72 respondents in Round 2 participated. The results indicate that there will be an increase in broadband penetration in all economic sectors. Such expansion will however depend on the lower cost of services. According to 60% of specialists, the cost of broadband Internet will be a critical factor for the expansion of penetration. The technology that will have more growth in broadband Internet connections by 2020, indicated by 33% of specialists, will be "Connecting via cable modem or wireless (offered by cable TV operators)," followed by "Connection via WiMAX networks," with 31% of predictions. As for 69% of specialists, the main impact on the economy by 2020 will be the increase of the Gross Domestic Product of Brazil, and the principal impacts of broadband Internet penetration in the Brazilian population will be the "Increase of Productivity of Individuals,” as indicated by 49% of experts, and "Improving the Quality of Life," indicated by 46%.; Esta pesquisa buscou prospectar a evolução da penetração da internet banda larga no Brasil em 2020 e os impactos na população e na economia brasileira. Para tanto...

Stimulating Broadband Adoption in Delaware: A Planning Tool

Homsey, Andrew; Patterson, Theodore; O'Boyle, Todd
Fonte: Universidade de Delaware Publicador: Universidade de Delaware
Tipo: Outros
EN_US
Relevância na Pesquisa
37.1%
published in coordination with and funded through the Delaware Department of Technology and Information; In  mid-­‐December  2009,  the  state  of  Delaware  was  awarded  funds  to  research  and  publish   broadband  options  for  its  citizens.  Governor  Jack  Markell  designated  the  Department  of   Technology  and  Information  (DTI)  as  the  agency  to  receive,  apply,  and  implement  the   funds,  according  to  the  guidelines  and  mandates  of  the  National  Telecommunications  and   Information  Administration  (NTIA).     In  2010  the  broadband-­‐mapping  portion  of  this  program  was  initiated  by  DTI,  consisting  of   data  collection,  the  development  of  a  statewide  broadband-­‐availability  map,  transmission   of  those  data  to  NTIA  for  the  development  of  its  national  broadband  map,  and  the  long-­‐ term  maintenance  of  these  data  by  the  state.    The  University  of  Delaware’s  Institute  for   Public  Administration  (IPA)  is  assisting  DTI  with  project-­‐data  collection...

Broadband Opportunities for Sussex County

Mix, Troy; Beauchamp, David; Wendt, Matthias
Fonte: Universidade de Delaware Publicador: Universidade de Delaware
Tipo: Outros
EN_US
Relevância na Pesquisa
37%
Infrastructure is a key ingredient in the recipe for regional economic prosperity—a constant requirement as the U.S. economy evolves. Roads and rail connect cities, the electric grid connects industry with energy, and telephone lines connect businesses with customers. The current economy places a premium on the high-speed transfer of data that broadband infrastructure makes possible. Broadband—defined by the Federal Communications Commission (FCC) as advanced communications systems capable of providing high-speed transmission of services such as data, voice, and video over the Internet and other networks—has become a staple infrastructure in the diet of competitive regional economies (Federal Communications Commission, February 2009). This report highlights the opportunity for Sussex County, Delaware, to harness broadband infrastructure for economic development and urges policy action in that regard. Broadband technologies are described and defined in terms of their speed, availability, and future promise. Chapter 2 reviews selected community benefits and specific applications of broadband. Chapter 3 summarizes the status of broadband infrastructure and use in rural areas of the United States, with a particular focus on Sussex County. Finally...

Phase identification and attribute analysis of broadband seismograms at far-regional distances

Bai, C-Y; Kennett, Brian
Fonte: Kluwer Academic Publishers Publicador: Kluwer Academic Publishers
Tipo: Artigo de Revista Científica
Relevância na Pesquisa
36.97%
A trained analyst can frequently provide a rapid assessment of a seismic record and provide identification for many seismic phases. For digital data a challenge is to find methods (or combination of methods) which can provide equivalent levels of phase identification and attribute analysis. Until now, there have been few discussions on phase attribute analysis for broadband records, even though the character of the major phases has been recognised several decades ago. We introduce a combination of four simple methods into the analysis of broadband seismograms so as to provide a means of improving phase recognition and the full use of broaband information for far-regional distances where the seismograms are particularly complex (because of the influence of the upper mantel discontinuities). For arrival detection we can employ the energy ratios of the short term behaviour to the long-term trend, using the vertical component and horizontal components of unrotated seismic records. We also use auto-regressive analysis to endeavour to separate broadband records into three parts: The seismic signal, microseismic noise and white noise. The higher order auto- and cross-correlation coefficient (representing the similarity of waveform) can be used to identify the presence of seismic phase...

National Broadband Planning and Market Liberalism: Regulatory Reforms for Citizenship?

Dwyer,Timothy
Fonte: OberCom Publicador: OberCom
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/01/2011 EN
Relevância na Pesquisa
36.93%
Planning for the systematic upgrading to ‘superfast’ broadband networks has emerged as a key communications infrastructure in many countries throughout the developed world. These governance processes combine centrally directed state measures with laissez-faire market or civil society organisation components. In some cases we are witnessing the kinds of arrangements typically encountered when governments pursue capital works initiatives in collaboration with privately controlled corporations. In this sense broadband networks can be another instance of ‘public-private’ infrastructure partnerships, just as governments have constructed joint arrangements for the ubiquitous supply of telecommunications, transport, electricity, gas and water. Yet media and communications systems are simultaneously cultural industry sites that often represent a profound culture-economy disconnect. In such systems, because they culturally distribute ‘public goods’ that work to shape peoples’ deliberation and participation in society, there is the tendency for conflict with the defining features of market liberalism (Keane, 1991). This dual life of media and communications systems, as both economic input to key infrastructure and foundational to political democracy is frequently highlighted (McChesney...