TY - GEN
T1 - A low-complexity design method for DMT time domain equalizers
AU - Lee, Chun Fang
AU - Wu, Wen-Rong
PY - 2006/1/1
Y1 - 2006/1/1
N2 - The time-domain equalizer (TEQ) is a commonly used device to shorten the channel impulse response in a discrete multitone (DMT) receiver. With a capacity maximization criterion, a TEQ design method called minimum intersymbol interference (minISI) has shown to have nearly optimum performance. However, the minISI design method require high computational complexity, adversely affecting its real-world implementation. In this paper, we propose a low-complexity method to overcome this problem. The main idea is to use a subset of the subchannels, instead of all, for capacity maximization. With a simple equally-spaced sampling method, the number of subchannels required for calculation can be effectively reduced. Simulations show that the performance of the proposed algorithm is almost the same as the original minISI while its computation is dramatically reduced.
AB - The time-domain equalizer (TEQ) is a commonly used device to shorten the channel impulse response in a discrete multitone (DMT) receiver. With a capacity maximization criterion, a TEQ design method called minimum intersymbol interference (minISI) has shown to have nearly optimum performance. However, the minISI design method require high computational complexity, adversely affecting its real-world implementation. In this paper, we propose a low-complexity method to overcome this problem. The main idea is to use a subset of the subchannels, instead of all, for capacity maximization. With a simple equally-spaced sampling method, the number of subchannels required for calculation can be effectively reduced. Simulations show that the performance of the proposed algorithm is almost the same as the original minISI while its computation is dramatically reduced.
UR - http://www.scopus.com/inward/record.url?scp=45249109815&partnerID=8YFLogxK
U2 - 10.1109/ISPACS.2006.364869
DO - 10.1109/ISPACS.2006.364869
M3 - Conference contribution
AN - SCOPUS:45249109815
SN - 0780397339
SN - 9780780397330
T3 - 2006 International Symposium on Intelligent Signal Processing and Communications, ISPACS'06
SP - 211
EP - 214
BT - 2006 International Symposium on Intelligent Signal Processing and Communications, ISPACS'06
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2006 International Symposium on Intelligent Signal Processing and Communications, ISPACS'06
Y2 - 12 December 2006 through 15 December 2006
ER -