標題: VIDEO ON PHONE LINES - TECHNOLOGY AND APPLICATIONS
作者: LIN, DW
CHEN, CT
HSING, TR
電子工程學系及電子研究所
電信研究中心
Department of Electronics Engineering and Institute of Electronics
Center for Telecommunications Research
公開日期: 1-二月-1995
摘要: This paper reviews the telephone loop plant characteristics, current DSL (digital subscriber line) technologies, recent efforts in video coding standards, and the interrelationship between DSL technologies and visual communications over subscriber lines. In overview of the loop plant characteristics we examine its physical makeup and transmission properties, where for the latter we discuss frequency and time responses of wire-pair lines and the impairments of echo, crosstalk, impulse noise, and radio frequency interference. We trace the historical development of various DSL technologies and comment on possible future evolution. Transmission technologies used in the ISDN basic-access DSL, the high bit-rate DSL, and the asymmetric DSL are portrayed. And the issue of spectrum compatibility among different transmission systems is explained. Several important video coding standards are briefly described, including ITU-T's H.261 and ISO's JPEG and MPEG series, which are either completed or emerging. The synergistic relationship between these standards and the DSL technologies is elucidated. As a result, DSL technologies provide the potential of delivering certain broadband services well in advance of direct fiber access for telephone subscribers.
URI: http://dx.doi.org/10.1109/5.364467
http://hdl.handle.net/11536/2055
ISSN: 0018-9219
DOI: 10.1109/5.364467
期刊: PROCEEDINGS OF THE IEEE
Volume: 83
Issue: 2
起始頁: 175
結束頁: 193
顯示於類別:期刊論文


文件中的檔案:

  1. A1995QC89600005.pdf