Dynamic spectrum management for energy-efficient transmission in DSL

Wolkerstorfer, Martin; Statovci, Driton; Nordström, Tomas

doi:10.1109/iccs.2008.4737336

Cited by 27 publications

(31 citation statements)

References 7 publications

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“…Note that b = 1 corresponds to no greening, and increasing b corresponds to greening. One can easily extend (20) with an extra bisection search to find the value of b that corresponds to a particular system power usage. This is because system power usage is monotonically decreasing with increasing b.…”

Section: Fair Greening By Constraintsmentioning

confidence: 99%

“…Recently, also a limited number of energy-aware DSM designs have been proposed [7,20,22,24], such as the minimization of the (weighted) sum of transmit powers subject to data rate constraints…”

Section: A Green Dsl Frameworkmentioning

confidence: 99%

“…More specifically, a large portion of the power consumption of today's state-of-the-art VDSL2 chipsets is due to the line driver [20]. The line driver consumption depends on the transmit powers.…”

Section: Introductionmentioning

confidence: 99%

“…In [4] iterative distributed DSM algorithms are proposed for minimizing the sum power for each user. In [7,[20][21][22][23][24] the problem of minimizing the (weighted) sum transmit powers of the multiuser DSL system has been considered, where different solution procedures are proposed: in [20,24] procedures are proposed based on iterative geometric programming (GP) approximation; in [21,23], power back-off-based procedures are proposed; in [22,25,26], solutions are proposed that make use of existing rate-adaptive DSM algorithms; in [27], power consumption is reduced and stability is improved by using a band-preference method. All the above research contributions on improving the power efficiency of DSL systems by the usage of DSM are understood to fall under a common term referred to as 'Green DSL'.…”

Section: Introductionmentioning

confidence: 99%

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Fair greening of broadband access: spectrum management for energy-efficient DSL networks

Tsiaflakis

Chiang

et al. 2011

J Wireless Com Network

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Dynamic spectrum management (DSM) is recognized as a promising technology to reduce power consumption in DSL access networks. However, the correct formulation of power-aware DSM problem statements requires a proper understanding of greening, i.e., reducing power consumption. In this paper, we, therefore, investigate greening and show that it can be decomposed into two dimensions: the price of greening and the fairness of greening. We first analyze the price of greening, providing theoretical bounds on the power-rate trade-off and identifying the typical trends that can be expected in practice, with some particularly promising results. Then, we introduce the fairness dimension, where we show that fairness becomes crucial when reducing power consumption. We propose four different fair greening policies that can be used to obtain a favorable trade-off between fast, fair and green DSL operation. Finally, we evaluate and quantify the corresponding trade-offs for realistic DSL access networks.

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Section: Fair Greening By Constraintsmentioning

confidence: 99%

Section: A Green Dsl Frameworkmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Fair greening of broadband access: spectrum management for energy-efficient DSL networks

Tsiaflakis

Chiang

et al. 2011

J Wireless Com Network

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“…The line-driver (LD) power consumption accounts for the largest part in the DSL power budget and scales with the transmit power (TP) [1][2][3]. With few exceptions [2,4,5], previous study has therefore focussed on minimizing the transmit sumpower [3,[6][7][8] through power spectral optimization, also known as dynamic spectrum management (DSM) [9].…”

Section: Introductionmentioning

confidence: 99%

Modeling and optimization of the line-driver power consumption in xDSL systems

Wolkerstorfer

Trautmann

Nordström

et al. 2012

EURASIP J. Adv. Signal Process.

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Optimization of the power spectrum alleviates the crosstalk noise in digital subscriber lines (DSL) and thereby reduces their power consumption at present. In order to truly assess the DSL system power consumption, this article presents realistic line driver (LD) power consumption models. These are applicable to any DSL system and extend previous models by parameterizing various circuit-level non-idealities. Based on the model of a class-AB LD we analyze the multi-user power spectrum optimization problem and propose novel algorithms for its global or approximate solution. The thereby obtained simulation results support our claim that this problem can be simplified with negligible performance loss by neglecting the LD model. This motivates the usage of established spectral optimization algorithms, which are shown to significantly reduce the LD power consumption compared to static spectrum management.

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Power-efficient copper access

Guenach¹,

Nuzman

Maes³

et al. 2010

Bell Labs Tech. J.

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Growth of high-throughput applications, such as video services, peer-to-peer (P2P) communication, and online storage, are driving upgrades to the capacity of access networks. At the same time, the quality of service (QoS) requirements of many of these applications require more sophisticated access equipment with rich features. These features normally come at the expense of higher power consumption. The challenge today is to build access network hardware and software that is capable of reducing power consumption while meeting the increased QoS and capacity requirements.

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Dynamic spectrum management for energy-efficient transmission in DSL

Cited by 27 publications

References 7 publications

Fair greening of broadband access: spectrum management for energy-efficient DSL networks

Fair greening of broadband access: spectrum management for energy-efficient DSL networks

Modeling and optimization of the line-driver power consumption in xDSL systems

Power-efficient copper access

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