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Application of gradient algorithm for optimizing power allocation in DSL systems

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3 Author(s)
Kalakech, A. ; Commun. & Remote Sensing Lab., UCL, Louvain-la-Neuve, Belgium ; Louveaux, J. ; Vandendorpe, L.

The optimization of power allocation in DSL systems is a well studied non-convex problem. In recent years many algorithms have been proposed to solve this problem, but due to its non-convexity, researchers had to rely on heuristic, or exhaustive research methods. In our approach we make use of the similarities of the channel gain between 2 adjacent tones to overcome the non-convexity limitation of gradient methods. This allows the proposition of an efficient and a fast routine that manages to speed up the convergence of existent state of the art algorithms.

Published in:

Acoustics Speech and Signal Processing (ICASSP), 2010 IEEE International Conference on

Date of Conference:

14-19 March 2010