Title :
Frequency domain echo cancellation for discrete multitone systems
Author :
Yeh, Heng-Cheng ; Lin, Leon
Author_Institution :
Realtek Semicond. Inc., Hsinchu, Taiwan
Abstract :
In this paper, we propose a low complexity echo canceller design, where the echo interference is estimated and subtracted in the frequency domain. The symbol-based operation minimizes the computational load without sacrificing performance. The scalability of the architecture makes it suitable for both echo cancellation (EC) mode and frequency-division multiplexing (FDM) mode ADSL.
Keywords :
digital subscriber lines; discrete systems; echo suppression; frequency division multiplexing; intersymbol interference; ADSL; FDM; ICI; ISI; asymmetric digital subscriber line; discrete multitone system; echo canceller design; echo interference estimation; frequency domain; frequency-division multiplexing mode; intercarrier interference; intersymbol interference; minimization; scalability; symbol-based operation; Communication industry; Convolution; DSL; Echo cancellers; Echo interference; Fast Fourier transforms; Frequency domain analysis; Intersymbol interference; OFDM modulation; Transmitters;
Conference_Titel :
Signal Processing and Information Technology, 2004. Proceedings of the Fourth IEEE International Symposium on
Print_ISBN :
0-7803-8689-2
DOI :
10.1109/ISSPIT.2004.1433803
