TDD-VDSL兼容ADSL频谱的子频带抑制方法  

The compatibility of TDD-VDSL and ADSL based on forbidding subcarriers

作　　者：樊凌涛[1] 陈健[1] 

机构地区：[1]上海交通大学SJTU-TI技术中心,上海200030

出　　处：《通信学报》2004年第1期157-163,共7页Journal on Communications

摘　　要：VDSL是数字用户线技术中的最新技术,宽带接入的最佳方案之一。为了提高VDSL系统的传输速率,它有必要兼容现行ADSL系统的频谱。本文通过对VDSL系统的双工方式及兼容ADSL系统的可行性分析,提出了VDSL系统的可用功率谱密度及TDD-VDSL系统兼容ADSL频带的子频带抑制方法,并进行了仿真分析。结果表明在不同的运行环境下,都有很好的性能,是一种有效的实用方案。VDSL is the latest digital subscriber line technique for high-speed communication over ordinary copper telephone lines, and one of the best potential broadband access solutions. The frequency band of ADSL may be used to support VDSL transmission in either downstream or upstream directions for achieving a much high bit-rate. After the analysis of the duplexing methods of VDSL systems and the compatibility with ADSL, this paper propose an appropriate VDSL PSD mask levels and a scheme of TDD-VDSL using ADSL frequency bands based on forbidding subcarriers. Simulation results show great benefit in different environments such as mixed FDD, Zipper FDD under FTTEx and FTTCab.

关 键 词：频谱兼容 时分双工 串扰 TDD-VDSL ADSL 子频带抑制 

分 类 号：TN915.61[电子电信—通信与信息系统]