Title :
Efficient matrix multiplication methods to implement a near-optimum channel shortening method for discrete multitone transceivers
Author :
Wu, Jeffrey ; Arslan, Güner ; Evans, Brian L.
Author_Institution :
Embedded Signal Process. Lab., Texas Univ., Austin, TX, USA
fDate :
Oct. 29 2000-Nov. 1 2000
Abstract :
The minimum intersymbol interference (min-ISI) method yields time-domain equalizer (TEQ) designs for discrete multitone (DMT) modulation transceivers that are close to channel capacity. For eight standard ADSL channels, the min-ISI design method reaches within 1% of the matched filter bound at the TEQ output. However, the min-ISI method relies several computationally expensive matrix multiplications. We develop low-complexity algorithms for these multiplications to allow for real-time implementation of the min-ISI method on programmable digital signal processors.
Keywords :
channel capacity; computational complexity; digital subscriber lines; equalisers; intersymbol interference; matrix multiplication; modulation; time-domain synthesis; transceivers; TEQ output; channel capacity; discrete multitone modulation; discrete multitone transceivers; efficient matrix multiplication methods; low-complexity algorithms; matched filter bound; min-ISI method; minimum intersymbol interference; near-optimum channel shortening method; programmable digital signal processors; real-time implementation; standard ADSL channels; time-domain equalizer; Channel capacity; Design methodology; Digital signal processors; Equalizers; Intersymbol interference; Matched filters; OFDM modulation; Signal processing algorithms; Time domain analysis; Transceivers;
Conference_Titel :
Signals, Systems and Computers, 2000. Conference Record of the Thirty-Fourth Asilomar Conference on
Conference_Location :
Pacific Grove, CA, USA
Print_ISBN :
0-7803-6514-3
DOI :
10.1109/ACSSC.2000.910934
