摘要
简述市内有线网和无线蜂窝网中高速数据接入线的需求概况 ,以及有线和无线高速数据接入线的传输环境 ,分别说明有线网对绞铜线调制解调器利用离散多音调 (DMT)和无线网基台下行线路利用正交频分多路 (OFDM )
The paper begins with the briefing on the high speed data access used in the urban wired network and wireless cellular network and the transmission environments for these netorks.Then,it explains the applications of DMT technology in the digital subscriber line of twisted pair copper wire and OFDM technology in the down link from the cellular base station to the mobile terminal.
出处
《电信快报》
2000年第7期7-10,共4页
Telecommunications Information
关键词
高速数据传输
通信网接入线
多载波调制
high speed data transmission access line in communication network multi carrier modulation
