Perfect discrete multitone modulation with optimal transceivers

Author

Lin, Yuan-Pei ; Phoong, See-May

Author_Institution

Dept. of Electr. & Control Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan

Volume

48

Issue

6

fYear

2000

fDate

6/1/2000 12:00:00 AM

Firstpage

1702

Lastpage

1711

Abstract

Previously, discrete Fourier transform (DFT)-based discrete multitone modulation (DMT) systems have been widely applied to various applications. In this paper, 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 optimal DMT systems over frequency-selective channels with colored noise. In addition, asymptotical performance of DFT-based and optimal DMT systems are studied and shown to be equivalent. However, for a moderate number of bands, the optimal DMT system offers significant gain over the DFT-based DMT system, as is demonstrated by examples

Keywords

discrete Fourier transforms; matrix algebra; modulation; noise; telecommunication channels; transceivers; DFT-based DMT systems; asymptotical performance; colored noise; discrete Fourier transform; frequency-selective channels; optimal DMT systems; optimal transceivers; perfect discrete multitone modulation; unitary matrices; Additive white noise; Bit rate; Colored noise; Discrete Fourier transforms; Filters; Frequency; Intersymbol interference; OFDM modulation; Redundancy; Transceivers;

fLanguage

English

Journal_Title

Signal Processing, IEEE Transactions on

Publisher

ieee

ISSN

1053-587X

Type

jour

DOI

10.1109/78.845928

Filename

845928