摘要
文章在概述VDSL系统技术特点的基础上,针对该系统的应用局限性,介绍了一种应用于基于DMT的VDSL系统中的Zipper双工方式。该方式利用循环后缀和符号定时解决了回波问题,采用脉冲成形和加窗技术解决了异步工作的问题。
Bas ed on the introduction to the characteris tics of VDSL s ys tem,and als o cons idering the s ys tem limitations,this paper introduces a novel duplex s cheme called the Zipper dulpex method and us ed for DMT-bas ed VDSL s ys tems.The Zipper duplex method s olves the s elf-echo problem by us ing the cyclic s uffix(CS)tog ether with s ynchroniz ed s ymbol timing at both trans mitters.The as ynchronous Zipper reduces the impact of the s elf-NEXT by performing puls e s haping at the trans mitter and windowing at the receiver.
出处
《中兴通讯技术》
2002年第3期47-51,共5页
ZTE Technology Journal
