Low-Complexity Channel Shortening Methods To Achieve High Bit Rates In Discrete Multitone Modulation Systems

Mr. Ming Ding

Department of Electrical and Computer Engineering
The University of Texas at Austin, TX, USA

Wednesday, April 16th, 2:00 PM, ENS 637

ming@ece.utexas.edu

Abstract

Multicarrier modulation (MCM) techniques such as orthogonal frequency division multiplexing (OFDM) and discrete multi-tone (DMT) have been receiving increasing attention in the literature, and have been deployed in numerous standards. MCM is attractive due to the ease with which it can combat channel dispersion. With all the benefits MCM could give, DMT has an extra ability to perform dynamic bit loading, which has the potential to exploit the available bandwidth fully. In broadband wireline communications, DMT modulation is standardized for asymmetric digital subscribe line (ADSL) and very-high-bit-rate digital subscriber line (VDSL) modems. Maximizing the bit rate is the ultimate goal for such systems.

The proposed research is targeted at developing reliable channel shortening methods for transceiver design that play a key role in increasing the bit rate. The proposed research aims at developing low complexity channel shortening techniques to maximize the bit rate. The methods will be amenable to implemented on programmable fixed-point digital signal processors, which are employed in ADSL/VDSL transceivers.

This talk (a) reviews the current research in this area, (b) presents research that motivated this work, and (c) proposes low complexity methods to maximize the bit rate in the DMT based systems.

Biography

TBA

A list of Wireless Networking and Communications Seminars is available at from the ECE department Web pages under "Seminars". The Web address for the Wireless Networking and Communications Seminars is http://signal.ece.utexas.edu/seminars