Bell Labs achieves 10 Gbps over G.fast DSL2015-04-17 09:55 by Daniela
Tags: Bell Labs, G.fast, DSL
Researchers at Bell Labs have achieved speed of 10 Gbps over copper lines using G.fast technology. This is a breakthrough because G.fast provides speeds of up to 1 Gigabits of data per second (Gbps). In comparison, typical broadband to the home now offers only 10 Mbps.
Bell's technology relies on the 2 pairs of twisted copper wires that are used for G.fast. The typical speed of 1 Gbps per two lines is multiplied when the lines are bundled together. This causes cross-talk between signals, so by using the crosstalk to carry information, the total capacity is boosted up to 10 Gbps.
As with any other technology, there are some limitations. The speed of 10 Gbps can be achieved at a distance of only about 50 m. Over longer distances the dropoffs become substantial. However, that's enough to get the service from a nearby street cabinet.
The benefits of the new technology are expected to be seen in the near future. The development of DSL standards would allow people without access to fiber optic lines to have a broadband connection over their existing copper wires at home, and achieve Internet speeds of several Gbps.
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