基于dmt的ADSL系统时域均衡和频域暂态补偿的新方法

EUROCON'2001. International Conference on Trends in Communications. Technical Program, Proceedings (Cat. No.01EX439) Pub Date : 2001-07-04 DOI:10.1109/EURCON.2001.937752

D. Straussnigg, A. Kozarev, H. Schenk, J. Bodner

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引用次数: 0

摘要

本文提出了一种多载波传输系统时域均衡的新方法。我们的方法背后的主要思想是通过使用一个简单的高通滤波器来缩短信道响应，并通过对DMT(离散多音调制)符号中的剩余瞬态进行额外补偿来改善频率均衡效果，从而提高性能，简化众所周知的基于fir的时间均衡算法(TEQ)的复杂性和实现成本。在基于dmt的ADSL仿真平台上进行了计算机仿真，测试了三种不同的配置:(1)基于35分岔fir的TEQ，(2)基于缩短滤波器的TEQ，(3)基于缩短滤波器和瞬态补偿的TEQ。

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New approach to time-domain equalization and frequency-domain transient compensation for a DMT-based ADSL system

In this paper, a new approach to time-domain equalization for a multicarrier transmission system is described. The main idea behind our method is to enhance the performance and simplify the complexity and implementation cost of the well-known FIR-based time equalization algorithm (TEQ), by using a simple high-pass filter for channel response shortening and improving the frequency equalization effects with additional compensation of the remaining transient in a DMT (discrete multitone modulation) symbol. Computer simulations were performed in a DMT-based ADSL simulation platform where three different configurations were tested: (1) 35-tap FIR-based TEQ, (2) shortening filter-based TEQ and (3) shortening filter and transient compensation-based TEQ.

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EUROCON'2001. International Conference on Trends in Communications. Technical Program, Proceedings (Cat. No.01EX439)

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