摘要
异步数字用户环路技术(ADSL)是在光纤用户网络普及之前,向用户提供宽带业务的一种过渡手段。文章比较了ADSL的三种调制技术,DMT以其性能优越和技术先进,成为ADSL的标准调制技术。
The asymmetric digital subscriber modulation technology is a transitional means to provide subscribers with broadband services prior to the popularization of light - fiber subscriber networks. Compared ADSL' s three kinds of modulation technologies, DMT with superior performance and advanced technology becomes the standard modulation technology of ADSL.
出处
《计算机与网络》
1999年第15期20-23,共2页
Computer & Network
关键词
QAM
DMT
ADSL
CAP
QAM - Quadrative amplitude modulation DMT - discrete multi - tone ADSL - asymmetric digital subscriber line technology CAP
