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Communications Magazine, IEEE

Issue 11 • Date Nov. 1998

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Displaying Results 1 - 15 of 15
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  • Dynamic Routing in Telecommunications Networks [Book Review]

    Page(s): 20
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    Freely Available from IEEE
  • Comparison of single-carrier and multitone digital modulation for ADSL applications

    Page(s): 114 - 121
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    Single-carrier modulation such as quadrature amplitude modulation (QAM) or carrierless amplitude modulation-phase modulation (CAP), and DMT are alternative techniques for providing digital communication in a variety of applications, in particular ADSL for communication over the telephone company subscriber lines. Although theory predicts comparable performance under ideal implementations, a definitive comparison of performance over a wide range of conditions will require more experience from field trials. Similarly, accurate comparison of implementation costs must await the greater availability of commercial-grade devices. However, enough is now known about these modulation schemes to compare their inherent similarities and differences in performance and cost. Overall, a present view of single-carrier and multitone modulation indicates comparable performance with some differences depending on the type of degradation. Costs should also be approximately equal, with multitone having some advantage in digital processing, but requiring greater cost in analog circuitry View full abstract»

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  • SingAREN: the Singapore Advanced Research and Education Network

    Page(s): 74 - 82
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    Singapore is the first country in the world to have a nationwide broadband network infrastructure deployed. What started as an experimental ATM testbed network in 1995 has now become a nationwide broadband infrastructure called Singapore ONE, launched in 1997 to provide residential broadband access via ADSL or CATV cable modem technologies, and business access via ATM. As of June 1998, Singapore ONE supported more than 10,000 users with over 120 commercial applications. More than 100,000 users are projected by the end of 1999, increasing to 400,000 by the year 2001. In order to support the technological needs of broadband communications under Singapore ONE, and to address the national R&D agenda in this area, an advanced research network called the Singapore Advanced Research and Education Network (SingAREN) was established in late 1997. This article gives an overview of the broadband infrastructure initiatives in Singapore, focusing on the SingAREN project. The goals of SingAREN, its network configuration, the research programs and activities to date, and plans for the future are described View full abstract»

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  • ATM traffic management considerations for facilitating broadband access

    Page(s): 98 - 105
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    Traffic management in ATM nodes plays a key role in providing the capability to support a wide range of integrated services while utilizing network resources, such as buffer space and bandwidth, in an efficient manner. In many cases, the issues arising in ATM access devices are very similar to those encountered in larger ATM backbone nodes. In this article, major issues in the design of traffic management schemes are discussed. These include switch fabric design, buffering strategies, service scheduling disciplines, usage parameter control, buffer management schemes, call admission control, and feedback flow control View full abstract»

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  • Telecommunications in Malaysia: diversity in adversity

    Page(s): 83 - 87
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    The telecommunications industry in Malaysia has experienced a tremendous transformation in just over a decade. The government-owned Jabatan Talikom, which hitherto operated the network, was incorporated in 1987 and subsequently privatized a few years later, with a majority share holding by the government. The regulatory aspects were spun off under the slim looking JTM. This marked the beginning of liberalization, and many new players entered the fray. This article reviews the telecommunications infrastructure and services available in Malaysia and visits some of the telcos offering these services. Some pertinent issues affecting the industry are also discussed View full abstract»

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  • The role of technology in telecom expansion in India

    Page(s): 88 - 94
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    It is not viable to expand the telecom network in India substantially at the prevalent level of per-line investment. However, systems based on new technologies, many developed in India, promise to more than halve the investment required. This article looks at the telecom scenario, the new technologies, the Indian products based on these technologies, and the cost reductions they promise. The provision of widespread Internet service with low access tariff is an important aspect of the new approach View full abstract»

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  • Future telecommunication networks: major trend projections

    Page(s): 122 - 127
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    Integrating synergistically the issues of traffic types, technologies, and competition, we create a view of the future of telecommunications that appears to be probable and review the technologies likely to be implemented in the future View full abstract»

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  • The telecommunications industry in Taiwan

    Page(s): 65 - 73
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    Telecommunications in Taiwan dates back more than 100 years and is provided by a government-owned organization. With the worldwide trend of liberalization and globalization of the telecom business, Taiwan cannot isolate itself from the international arena and must face the challenge of increased competition. The author first introduces the current status of the telecommunications industry in Taiwan, and then describes some technical innovations and a series of policies implemented by the government. In addition, telecom service projects and future prospects are also presented View full abstract»

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  • Provision of multimedia services: the key to deployment of access network architectures in developing countries

    Page(s): 106 - 113
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    Access networks have always been a very significant part of public network operator investments and operating costs. They have not, however, been a very dynamic part of telecom networks, planned, as they were, for the long term and usually with limited technological innovation. This is changing, and access networks are increasingly coming into focus for technological innovation and as platforms for provisioning new advanced services in a competitive business environment. New fiber, radio, and copper-based technologies, in combination with flexible multiplexers and management tools, provide new possibilities for improved quality of services, cost reduction, and provisioning of new advanced services. In order to fully benefit from these possibilities, to extend and upgrade existing as well as build completely new access networks, a flexible service-independent access network architecture and access network system are required. In this article a target access network architecture is suggested as well as an implementation scenario for developing countries View full abstract»

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  • Telecommunications markets, industry, and infrastructure in Korea

    Page(s): 59 - 64
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    Following the successful deployment of basic telecommunications networks and services in the 1970s and 1980s, Korea's telecommunications sector has undergone significant environmental and technical changes. Among these are the introduction of competition in the telecommunications market, the allowance of foreign ownership of telecommunication services, and the deployment of new networks and services, all within a new legal framework. As demands for more diversified and high-quality telecommunications increase, Korea is now preparing for a major communication infrastructure that can serve as a common network foundation. Named the Korea Information Infrastructure, it is planned to provide a new network foundation that will serve as the core of the information society in the 21st century. This article describes the current status of and future perspectives on the Korean telecommunications markets, industry, and infrastructure View full abstract»

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  • Changes and deregulation in the Japanese telecommunications market

    Page(s): 46 - 53
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    The Japanese telecommunications market has experienced drastic changes since the privatization of NTT and the introduction of competition in 1985. Rate reduction in long distance services has been remarkable, and NTT's revenue share in the long distance market has declined sharply. The growth in mobile services and Internet services are epoch-making, and POTS is showing signs of decline. Behind the scenes is the progress of deregulation in remedying the distortion in the market structure. The establishment of new interconnection rules and the reorganization of NTT into one long distance company and two regional companies are the most important outcomes. With this deregulation the Japanese telecommunications industry is expected to develop from managed competition to full competition. However, new challenges for telecommunications regulation are emerging with the progress of competition and new multimedia services. One of them is the universal service. Cooperation among regulators, operators, users, and scholars is required to accommodate the change View full abstract»

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  • The development of telecommunications in China

    Page(s): 54 - 58
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    This article reviews the achievements and history of telecommunications development in China, and analyzes the development of the telecommunications services market in China. The analysis is mainly focused on total turnover of telecommunications services, the development of telecommunications services, and competition in the market. Finally, it analyzes issues on policies and regulations for telecommunications, and gives development targets for the future View full abstract»

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  • Telecommunications industry markets: vision and potential

    Page(s): 95 - 96
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    This article studies future telecommunications industry markets from a new vision and potential viewpoint. The topic is discussed in terms of environmental, technological, and consumer needs. Also, some new thoughts are proposed and the market trend is mentioned View full abstract»

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  • The telecommunications market in Japan: entering the digital era and the second phase of competition

    Page(s): 38 - 44
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    After the liberalization of the Japanese telecommunications market in 1985, the market went through a first phase of competition, which focused on domestic telephony services, in both the long distance (domestic and international) and mobile segments. However, the growth of the Internet and the full digitalization of NTT's telecommunications network are ushering in a digital era and a second phase of competition. This article describes the current Japanese telecommunications market and the direction it is taking by referring to key statistical indicators View full abstract»

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Aims & Scope

IEEE Communications Magazine covers all areas of communications such as lightwave telecommunications, high-speed data communications, personal communications systems (PCS), ISDN, and more.

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Sean Moore
Centripetal Networks