SCALE: A Low-Complexity Distributed Protocol for Spectrum Balancing in Multiuser DSL Networks
SCALE: A Low-Complexity Distributed Protocol for Spectrum Balancing in Multiuser DSL Networks
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DOI：
10.1109/tit.2009.2023751
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发表时间：
2009-08
影响因子：
2.5
通讯作者：
J. Papandriopoulos;J. Evans
中科院分区：
文献类型：
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作者：
J. Papandriopoulos;J. Evans
数字用户线（DSL）的动态频谱管理有可能大大增加老化的最后一英里铜线接入网的容量。本文通过功率谱平衡向实现这一潜力迈出了重要的一步。我们推导出一种新的算法称为SCALE，提供了一个显着的性能改善现有的迭代注水（IWF）算法在多用户DSL网络中，这样做具有相当低的复杂性。该算法很容易通过测量和有限的消息传递与频谱管理中心的使用分布。我们概述了如何管理开销，并表明，在零消息传递的限制，性能降低到IWF。
Dynamic spectrum management of digital subscriber lines (DSLs) has the potential to dramatically increase the capacity of the aging last-mile copper access network. This paper takes an important step toward fulfilling this potential through power spectrum balancing. We derive a novel algorithm called SCALE, that provides a significant performance improvement over the existing iterative water-filling (IWF) algorithm in multiuser DSL networks, doing so with comparable low complexity. The algorithm is easily distributed through measurement and limited message passing with the use of a spectrum management center. We outline how overhead can be managed, and show that in the limit of zero message-passing, performance reduces to IWF.