一种基于DMT调制的VDSL系统射频干扰的抵消方法  

A RFI Cancelling Method for VDSL Based on Discrete Multi tone Modulation

作　　者：石文孝[1] 

机构地区：[1]长春邮电学院通信工程系,长春130012

出　　处：《吉林大学自然科学学报》2000年第4期58-60,共3页Acta Scientiarum Naturalium Universitatis Jilinensis

基　　金：信息产业部重点科技发展计划项目基金! (批准号 :970 65)

摘　　要：在讨论几种射频干扰 ( RFI)抵消方法的基础上 ,提出一种以参数估计为基础抵消 RFI的有效方法 ,并用 MATLAB工具进行计算机仿真 .结果表明 ,使用这种方法信号干扰比( SIR)能够得到 6 0 dRadio frequency interference (RFI) can severely degrade the performance of very high speed digital subscriber lines (VDSL). On the basis of the discussion of several RFI cancelling methods, this paper gives an efficient method of cancelling RFI based on parameter estimation and the computer simulations with MATLAB have been carried out. It is shown from the simulation that 60 dB SIR improvement can be achieved with the proposed method.

关 键 词：射频干扰 数字用户环路 离散多频音调制 电信网 

分 类 号：TN915.61[电子电信—通信与信息系统]