2000 IEEE Asilomar Conference on Signals, Systems, and Computers

Efficient Matrix Multiplication Methods to Implement a Near-Optimum Channel Shortening Method for Discrete Multitone Transceivers

Jeffrey Wu, Guner Arslan, and Brian L. Evans

Department of Electrical and Computer Engineering, Engineering Science Building, The University of Texas at Austin, Austin, TX 78712-1084 USA
jwu@ece.utexas.edu - arslan@ece.utexas.edu - bevans@ece.utexas.edu

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Abstract

The minimum intersymbol interference (min-ISI) method yields time-domain equalizer (TEQ) designs for discrete multitone (DMT) modulation transceivers that are close to channel capacity. For eight standard ADSL channels, the min-ISI design method reaches within 1% of the matched filter bound at the TEQ output. However, the min-ISI method relies several computationally expensive matrix multiplications. In this paper, we develop low-complexity algorithms for these multiplications to allow for real-time implementation of the min-ISI method on programmable digital signal processors.

Last Updated 11/05/00.