摘要
首先介绍了VDSL(甚高速率数字用户线)技术的应用驱动,接着描述了在VDSL系统上行传输方向上存在的"近 远"FEXT问题,以及为解决这个问题而提出的几种上行信道功率回馈方法及实现机制,并对它们的性能和实现复杂性进行了分析比较。
This paper introduces the VDSL(Very High-Speed Digital Subscriber Line) application drivers firstly. Then, it describes the near-far FEXT problem in the upstream direction of VDSL, as well as the methods and implementation mechanism of upstream power back-off to mitigate the near-far problem. Finally, the performances and implementation complexity of the various upstream power back-off methods are compared.
出处
《南京邮电学院学报（自然科学版）》
2004年第2期37-41,共5页
Journal of Nanjing University of Posts and Telecommunications
关键词
甚高速率数字用户线
上行信道功率回馈
接入网
Very high-speed digital subscriber line
Upstream power back-off
Access network
