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A Power Allocation Method for DMT-Based DSL Systems Using Geometric Programming | IEEE Journals & Magazine | IEEE Xplore

A Power Allocation Method for DMT-Based DSL Systems Using Geometric Programming


Abstract:

In this letter, we consider a power allocation problem for digital subscriber line (DSL) systems. The goal of this problem is to minimize the total transmit power under s...Show More

Abstract:

In this letter, we consider a power allocation problem for digital subscriber line (DSL) systems. The goal of this problem is to minimize the total transmit power under some constraints on minimum data-rate and maximum transmit power for each modem where we take into account various sources of interference. We convert our problem into an auxiliary geometric programming (GP) which gives the optimum solution for transmit powers in a neighborhood of a given feasible point. Then, we use an iterative scheme for obtaining the solution to our original problem by exploiting this auxiliary GP problem. Numerical examples show that the proposed method outperforms the existing schemes.
Published in: IEEE Signal Processing Letters ( Volume: 17, Issue: 1, January 2010)
Page(s): 16 - 119
Date of Publication: 21 August 2009

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