Convex relaxation based low-complexity optimal spectrum balancing for multi-user DSL

被引：0

作者：

Tsiaflakis, Paschalis ^{[1
]}

Vangorp, Jan ^{[1
]}

Moonen, Marc ^{[1
]}

Verlinden, Jan ^{[2
]}

机构：

[1] Katholieke Univ Leuven, Dept Elect Engn, ESAT Lab, Louvain, Belgium

[2] DSL Experts Team, Bell, Belgium

来源：

2007 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING, VOL III, PTS 1-3, PROCEEDINGS | 2007年

关键词：

digital subscriber lines; crosstalk; dynamic spectrum management; MIMO systems; optimization methods;

D O I：

暂无

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

In modern DSL networks, crosstalk between different DSL lines in the same cable bundle is a major source of performance degradation. By balancing the transmit power spectra, also referred to as multi-user power control, the impact of crosstalk can be minimized leading to spectacular performance gains. In this paper a novel low-complexity spectrum balancing algorithm is presented. Its performance is compared to optimal spectrum balancing for multiple-user scenarios and it is seen to yield similar results but with a huge reduction in complexity. Moreover, by the use of a Spectrum Management Center and limited message-passing the algorithm can be executed in a distributed fashion, which is a great asset in current DSL networks.

引用

页码：349 / +

页数：2

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