Equalization for DMT-based broadband modems

Citation
T. Pollet et al., Equalization for DMT-based broadband modems, IEEE COMM M, 38(5), 2000, pp. 106-113
Citations number
9
Categorie Soggetti
Information Tecnology & Communication Systems
Journal title
IEEE COMMUNICATIONS MAGAZINE
ISSN journal
01636804 → ACNP
Volume
38
Issue
5
Year of publication
2000
Pages
106 - 113
Database
ISI
SICI code
0163-6804(200005)38:5<106:EFDBM>2.0.ZU;2-9
Abstract
Faced with fierce competition from cable operators, telephone companies are now aggressively investing in digital subscriber line technology with the objective of providing an economic broadband access alternative. However, h igh-bitrate transmissions over the metallic access network is far from triv ial. The subscriber loop predominantly consists of interconnection of twist ed pair copper sections. This causes severe attenuation of the high-frequen cy components of the transmitted signal. Equalization refers to the signal processing in the transceiver to combat the effects of the dispersive chann el on the transmitted signal. This article overviews equalization methods f or discrete multitone modulation (DMT). The interference structure created by a non-ideally equalized channel is analyzed. Time modulation as well as frequency domain equalization methods are addressed.