Egress reduction by intra-symbol windowing in DMT-based transmitters

Author

Cuypers, G. ; Vanbleu, K. ; Ysebaert, G. ; Moonen, M.

Author_Institution

ESAT, Katholieke Univ., Leuven, Heverlee, Belgium

Volume

4

fYear

2003

fDate

6-10 April 2003

Abstract

Discrete multi tone (DMT) uses an inverse discrete Fourier transform (IDFT) to modulate data on the carriers. The rather high side lobes of the IDFT filter bank can lead to spurious emissions in unauthorised frequency bands. Applying a window function within the DMT symbol alleviates this, but introduces distortions that are generally not easy to compensate. In this paper a special class of window functions is derived for which this compensation only requires a modest amount of processing at the receiver.

Keywords

digital subscriber lines; discrete Fourier transforms; modulation; receivers; transmitters; DMT-based transmitters; DSL; IDFT; compensation; data communication; digital subscriber line; discrete multi tone modulation; egress reduction; intra-symbol windowing; inverse discrete Fourier transform; receiver; window functions; Bandwidth; Bit rate; DSL; Discrete Fourier transforms; Equalizers; Filter bank; Frequency conversion; Frequency domain analysis; OFDM modulation; Transmitters;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 2003. Proceedings. (ICASSP '03). 2003 IEEE International Conference on

ISSN

1520-6149

Print_ISBN

0-7803-7663-3

Type

conf

DOI

10.1109/ICASSP.2003.1202697

Filename

1202697