Title :
Bitrate-maximizing time-domain equalizer design for DMT-based systems
Author :
Vanbleu, Koen ; Ysebaert, Geert ; Cuypers, Gert ; Moonen, Marc ; Van Acker, Katleen
Author_Institution :
Katholieke Univ. Leuven-ESAT/SCD, Leuven-Heverlee, Belgium
fDate :
6/1/2004 12:00:00 AM
Abstract :
A time-domain equalizer (TEQ) is inserted in discrete multitone (DMT) receivers to impose channel shortening. Many algorithms have been developed to initialize this TEQ, but none of them really optimizes the bitrate. We present a truly bitrate-maximizing TEQ (BM-TEQ) cost function that is based on an exact formulation of the subchannel signal-to-noise ratio as a function of the TEQ taps. The performance of this BM-TEQ comes close to the performance of the per-tone equalizer.
Keywords :
digital subscriber lines; equalisers; modulation; optimisation; telecommunication channels; time-domain analysis; DMT-based systems; SNR; bitrate maximizing cost function; channel shortening; discrete multitone receivers; subchannel signal-to-noise ratio; time-domain equalizer design; Bit rate; DSL; Demodulation; Discrete Fourier transforms; Equalizers; Finite impulse response filter; Intersymbol interference; OFDM modulation; Signal to noise ratio; Time domain analysis;
Journal_Title :
Communications, IEEE Transactions on
DOI :
10.1109/TCOMM.2004.829564
