DocumentCode :
414802
Title :
Optimal multiuser spectrum management for digital subscriber lines
Author :
Cendrillon, Raphael ; Moonen, Marc ; Verlinden, J. ; Bostoen, Tom ; Yu, Wei
Author_Institution :
Dept. of Electr. Eng., Katholieke Univ., Leuven, Belgium
Volume :
1
fYear :
2004
fDate :
2004
Firstpage :
1
Abstract :
Crosstalk is a major issue in modern DSL systems such as ADSL and VDSL. Static spectrum management, the traditional way of ensuring spectral compatibility, employs spectral masks which can be overly conservative and lead to poor performance. In this paper we present a centralized algorithm for optimal spectrum management (OSM) in DSL. The algorithm uses a dual decomposition to solve the spectrum management problem in an efficient and computationally tractable way. The algorithm shows significant performance gains over existing DSM techniques, e.g. in a downstream ADSL scenario the centralized OSM algorithm can outperform a distributed DSM algorithm such as iterative waterfilling by up to 135%.
Keywords :
crosstalk; digital subscriber lines; radio spectrum management; centralised algorithm; crosstalk; digital subscriber line; dual decomposition; modern DSL system; optimal multiuser spectrum management; spectral compatibility; Background noise; Crosstalk; DSL; Degradation; Iterative algorithms; Modems; Performance gain; Radio spectrum management; Sliding mode control; Technological innovation;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Communications, 2004 IEEE International Conference on
Conference_Location :
Paris, France
Print_ISBN :
0-7803-8533-0
Type :
conf
DOI :
10.1109/ICC.2004.1312441
Filename :
1312441
Link To Document :
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