不对称数字用户环线(ADSL,Asymmetrical Digital Subscriber Loop)技术利用现有的电话线网络,适合解决目前宽带网络的瓶颈--"最后一公里"问题,其应用越来越广泛,对检测设备的要求也越来越高.本文通过对现有测量方法总结比较之后,提出了一种新的ADSL线路传输特性的检测方案--使用自适应算法实现对ADSL整个频段衰减情况的动态测量,并采用通用DSP处理器实现算法,对系统的整体结构进行了设计.测试算法经过在MATLAB上仿真,可以达到对信道传输特性的提取.
Abstract:
Asymmetrical Digital Subscriber Loop (ADSL) is suitable to eliminate "the last mile" bottleneck of current broadband solutions, which use the existing telephone network and apply more and more abroad. It results in the higher demands of the detecting equipment. According to the review and comparison of today "s ADSL detect instruments, a new method is put forward with the system design, which self - adapting detecting can be used to test the ADSLs transmission characters on the whole band dynamically. Current DSP is used to operate arithmetic. The self - adapting detecting arithmetic can get the characteristic of signal channel through the MATLAB simulation.