ADSL

소개

ADSL에 대한 정의, 배경, 특징, 응용분야에 대한 영어리포트입니다.
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목차

1Overview
2History
3Basic Concept of ADSL and DSL
3.1 Asymmetric Digital Subscriber Line (ADSL)
3.2 Digital Subscriber Line (DSL)
4Capabilities
5ADSL Architecture
6Technology
7Modem
7.1 DSL Modem
7.2 ADSL Modem
8Multiple Channel
9Benefits
10Applications
11Drawbacks
11.1 ADSL
11.2 DSL
12Conclusion
13Reference

본문내용

1. Overview
The rapid growth of the Internet and the World Wide Web (WWW), and the widespread deployment of personal computers have greatly accelerated the need for higher bit rates, faster local loop connections to the PSTN, and more responsive access to bandwidth on demand. While the picture is not altogether clear at this time, it is certain that new capabilities which are resulting from the current deployments will have significant implications for planners and providers of NS/EP services e.g., the ability to provide real-time video from a disaster site for remote damage assessment or medical diagnosis and treatment. Recent advances in digital signal processing (DSP) have resulted in significant increases in usable bandwidth over traditional wirelines used for PSTN access. However, in many respects, the universal transmission of data on such lines still has significant limitations.
Specific limitations concern achievable data rates, the quality of transmissions, and the availability of shared access.

참고자료

·    Aber, R. 1998, DSL Local Loop Access Technology., viewed 2 Aug 2009, URL: http://www.3com.com/technology/tech_net/white_papers/500624.html
·  Levitt, J.,1998, Digital Subscriber Line Technology ,viewed 2 Aug 2009, URL : http://www.techweb.com/se/directlink.cgi?IWK19981005S0040
·  Press Release, 1998, SuperVision ADSL digital modems, viewed 2 Aug 2009, URL: http://www.westell.com/pr111.html
·  Flanagan P. ,1997, The 10 hottest technologies in Telecom.,viewed 2 Aug 2009, URL: http://www.telecoms-mag.com/issues/199705/tcs/flanagan.html
·  Rauschmayer, D., 1998, Asymmetric Digital Subscriber Lines and Very High-speed Digital Subscriber Lines, Macmillian Technical Publishing, Indianapolis.
·  Marven, C. and Ewers, G., 1996, A Simple Approach to Digital Signal Processing, John Wiley & Sons, Inc., New York.
·  Black, U., 1997, Emerging Communications Technologies - Second Edition, Prentice Hall PTR, Upper Saddle River.