Artificial noise may save €15 million on energy bills

The global broadband DSL access network consumes about 20 billion kilowatt-hours of energy per year but a new energy conservation solution developed at the Fraunhofer Institute for Communication Systems ESK may change this.

Broadband access always runs on full power leading to high DSL network electricity consumption, which can be reduced by using a low-power mode (L2 mode) in standard ADSL2/ADSL2+ systems.

However, the energy saving technology has not been in use because of interference to systems not using it, but the scientists claim artificial or virtual noise may be the answer to this problem.

According to the scientists, the artificial noise simulates typical cable bundle interference to the broadband receivers, making the system register normal interference even if the device next door is in low-power mode.

"Network operators could reduce their electricity consumption by several million kilowatt-hours per year which, in Germany alone, would mean an annual saving of 15 million euros on operating costs," said the scientists.

Mobile phones are being used as remote devices for controlling how street lights are used in a carbon reduction initiative in a German village.ADNFCR-2541-ID-19237511-ADNFCR

Saturday 4th July 2009

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