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January 24, 2010 | History

Efficient spectrum balancing techniques for discrete multi-tone based digital subscriber line systems 1 edition

Efficient spectrum balancing techniques for discrete multi-tone based ...
Raymond Lui

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Efficient spectrum balancing techniques for discrete multi-tone based digital subscriber line systems.

Published 2006 .
Written in English.

About the Book

Dynamic spectrum management (DSM) has the potential to improve crosstalk-limited, rnulti-user digital subscriber lines (DSL) systems throughput. Unfortunately, an efficient, high-performance DSM technique has yet been discovered. Optimal spectrum balancing (OSB), currently the best available spectrum optimization technique, is capable of determining the optimal throughputs of discrete multi-tone (DMT) based DSL systems but it suffers with exponential computational complexity. The focus of this thesis is to identify more computationally efficient rnethods to improve the performance of OSB. First, a time-sharing condition, is observed for the spectrum optimization problem of OSB. This observation re-interprets OSB as a dual algorithm that converges to the global optimum of the spectrum optimization problem, and this observation leads to more efficient dual update methods. Next, this thesis proposes iterative spectrum balancing for approximating the dual objective more efficiently. Simulation results show that the proposed algorithm outperforms iterative water-filling (IWF) in different DSL scenarios.

Edition Notes

Source: Masters Abstracts International, Volume: 44-06, page: 2922.

Thesis (M.A.Sc.)--University of Toronto, 2006.

Electronic version licensed for access by U. of T. users.

ROBARTS MICROTEXT copy on microfiche.

The Physical Object

80 leaves.
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History Created December 11, 2009 · 2 revisions Download catalog record: RDF / JSON

January 24, 2010 Edited by WorkBot add more information to works
December 11, 2009 Created by WorkBot add works page