Artificial noise saves energy

Ecological and economic factors are prompting telecommunications companies to deploy energy-saving systems. The broadband DSL access network consumes about 20 billion kilowatt-hours of energy per year worldwide - equivalent to four percent of Germany's annual energy consumption. The use of a low-power mode (L2 mode) in standard ADSL2/ADSL2+ systems could significantly reduce the amount of electricity consumed by the DSL network...

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