Title :
Optimal DMT transceivers over fading channels
Author :
Lin, Yuan-Pei ; Phoong, See-May
Author_Institution :
Dept. of Electr. & Control Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan
Abstract :
Discrete Fourier transform (DFT) based discrete multitone modulation (DMT) systems have been widely applied to various applications. We study a broader class of DMT systems using more general unitary matrices instead of DFT matrices. For this class we show how to design the optimal DMT systems over fading channels with colored noise. Examples are given to show the improvement over the traditional DFT based DMT system. In addition we introduce a modified DFT based DMT system. The new system has the same complexity but better noise rejection property
Keywords :
AWGN channels; discrete Fourier transforms; fading channels; matrix algebra; modulation; noise; optimisation; transceivers; AWGN fading channels; colored noise; complexity; discrete Fourier transform; discrete multitone modulation; general unitary matrices; modified DFT based DMT system; noise rejection; optimal DMT transceivers; polyphase representation; receiving filters; transmitting filters; AWGN; Additive white noise; Colored noise; Crosstalk; Data communication; Fading; Finite impulse response filter; Gaussian noise; OFDM modulation; Transceivers;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1999. Proceedings., 1999 IEEE International Conference on
Conference_Location :
Phoenix, AZ
Print_ISBN :
0-7803-5041-3
DOI :
10.1109/ICASSP.1999.756242
