Title :
A simplified interpolation equalization technique for filterbank-based DMT systems
Author :
Wang, Luqing ; Tellambura, Chintha ; Nowrouzian, Behrouz
Author_Institution :
Dept. of Electr. & Comput. Eng., Alberta Univ., Edmonton, Alta., Canada
Abstract :
This paper presents a simplified interpolation equalization technique for filterbank-based DMT systems. In DMT systems, the channel effect in each subchannel can be approximated as a fractional delay, which can be compensated for by using the multitap interpolation equalization technique. By using a large number of polyphase components of the analysis filter output, and using the same polyphase index set for all subchannels, a simplified (suboptimal) interpolation equalization technique is proposed. This technique gives rise to a high transmission bit-rate close to the optimal solution of the interpolation equalization technique. It is also suitable for the timing synchronization.
Keywords :
channel bank filters; delays; equalisers; interpolation; synchronisation; analysis filter output; channel effect; channel filterbank-based discrete multitone system; fractional delay; high transmission bit-rate; polyphase component; polyphase index set; simplified multitap interpolation equalization technique; timing synchronization; Additive noise; DSL; Delay effects; Digital filters; Digital modulation; Equalizers; Interpolation; OFDM modulation; Piecewise linear approximation; Timing;
Conference_Titel :
Electrical and Computer Engineering, 2003. IEEE CCECE 2003. Canadian Conference on
Print_ISBN :
0-7803-7781-8
DOI :
10.1109/CCECE.2003.1226322
