Title :
Performance of the MMSE time domain equalizer in DMT modulation system
Author :
Changchuan, Yin ; Guangxin, Yue
Author_Institution :
Beijing Univ. of Posts & Telecommun., China
Abstract :
Performance of the time domain equalizer (TDE) based on the minimum-mean-square-error (MMSE) criterion in a discrete multitone (DMT) modulation system is presented. A new criterion, the shortening signal-to-noise-ratio (SSNR) criterion, is used to investigate the performance difference of the TDE under two optimized constraints (the unit tap constraint and the unit energy constraint). The variation of the information transmission rate after the TDE being introduced is studied. Finally, the effect of the bandwidth optimization of the system on the output SNR of the TDE is carefully examined
Keywords :
adaptive equalisers; least mean squares methods; modulation; noise; optimisation; time-domain analysis; DMT modulation system; MMSE time domain equalizer; SSNR; TDE; bandwidth optimization; discrete multitone modulation; information transmission rate variation; minimum-mean-square-error; optimized constraints; output SNR; performance; shortening signal-to-noise-ratio; unit energy constraint; unit tap constraint; Bandwidth; Constraint optimization; Data communication; Dispersion; Equalizers; Niobium; OFDM modulation; Signal to noise ratio; Transceivers; White noise;
Conference_Titel :
Communication Technology Proceedings, 1998. ICCT '98. 1998 International Conference on
Conference_Location :
Beijing
Print_ISBN :
7-80090-827-5
DOI :
10.1109/ICCT.1998.743111
