Title :
New approach to time-domain equalization and frequency-domain transient compensation for a DMT-based ADSL system
Author :
Straussnigg, D. ; Kozarev, Aleksandra ; Schenk, Heinrich ; Bodner, Joachim
Author_Institution :
Microelectron. Design Centers Austria, Infineon Technol., Villach, Austria
Abstract :
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.
Keywords :
digital subscriber lines; equalisers; frequency-domain analysis; high-pass filters; modulation; time-domain analysis; transient response; DMT-based ADSL system; FIR-based time equalization algorithm; channel response shortening; discrete multitone modulation; frequency equalization effects; frequency-domain transient compensation; high-pass filter; multicarrier transmission system; shortening filter; time-domain equalization; Computer simulation; Delay; Discrete Fourier transforms; Equalizers; Filters; Frequency; Intersymbol interference; OFDM modulation; Time domain analysis; Transceivers;
Conference_Titel :
EUROCON'2001, Trends in Communications, International Conference on.
Conference_Location :
Bratislava, Slovakia
Print_ISBN :
0-7803-6490-2
DOI :
10.1109/EURCON.2001.937752
