IEEE Asilomar Conference on Signals, Systems, and Computers,
Nov. 3-6, 2002, Pacific Grove, CA USA.
DMT Bit Rate Maximization With Optimal Time Domain Equalizer
Filter Bank Architecture
Milos Milosevic (1),
Lucio F. C. Pessoa (2),
Brian L. Evans (1),
Ross Baldick (1)
(1) Department of Electrical and Computer Engineering,
Engineering Science Building,
The University of Texas at Austin,
Austin, TX 78712-1084 USA
(2) 700 West Parmer Lane, MD: TX32-PL30,
Motorola, Austin, TX 78729 USA
TEQ Design Matlab toolbox, DSP source code, papers, and presentations
In a multicarrier modulation system, a time domain
equalizer (TEQ) traditionally shortens the transmission
channel impulse response (CIR) to mitigate inter-symbol
In this paper, we propose a data-rate optimal TEQ filter
bank whose data rates at the equalizer output are
significantly better than those of the Maximum Bit Rate
and Minimum ISI methods and similar to those of the
least-squares per-tone equalizer method for ADSL CIRs,
transmit filters, and receive filters.
The contributions of this paper are:
- a new model for multicarrier demodulator output SNR
that includes ISI, near-end crosstalk, white Gaussian
noise, and the digital noise floor;
- data rate optimal time domain per-tone TEQ filter bank, and
- a new achievable upper bound on achievable bit rate.
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