Title :
Per tone equalization for DMT receivers
Author :
Van Acker, Katleen ; Leus, Geert ; Moonen, Marc ; van de Wiel, O. ; Pollet, Thierry
Author_Institution :
ESAT-SISTA, Katholieke Univ., Leuven, Belgium
Abstract :
An alternative receiver structure is presented for discrete multitone (DMT)-based systems. The usual structure consisting of a (real) time domain equalizer (TEQ) with a (complex) 1-tap frequency domain equalizer (FEQ) per tone, is modified into a structure with a (complex) multitaps FEQ per tone. By solving an MMSE problem, the SNR is maximized for each tone separately. This always results in a larger bit rate while complexity during data transmission is kept at the same level. Moreover, the per tone equalization is shown to have a reduced sensitivity to the synchronization delay.
Keywords :
computational complexity; delays; digital subscriber lines; equalisers; least mean squares methods; modems; modulation; noise; receivers; synchronisation; ADSL; DMT modem; DMT receivers; MMSE problem solution; SNR; asymmetric digital subscriber line; bit rate; data transmission; discrete multitone-based systems; frequency domain equalizer; per tone equalization; receiver structure; reduced synchronization delay sensitivity; time domain equalizer; Bit rate; Copper; DSL; Data communication; Delay; Demodulation; Equalizers; Frequency domain analysis; Frequency synchronization; OFDM modulation;
Conference_Titel :
Global Telecommunications Conference, 1999. GLOBECOM '99
Print_ISBN :
0-7803-5796-5
DOI :
10.1109/GLOCOM.1999.831715
