Ericsson claims 500Mbps speeds over copper
Updated:2009/3/18 11:48
Ericsson has successfully demonstrated data-transfer speeds of more than 500 megabits per second over copper, the communications company said Monday.
The data-transfer rates were achieved using a version of digital subscriber line (DSL) technology called "vectorized" VDSL2, Ericsson said in a statement. The technology, also called "crosstalk cancellation," provides the high transmission rates through a twisted pair of copper cables by reducing the noise coming from other pairs in the same cable bundle. VDSL2 has traditionally offered speeds of around 100Mbps.
According to Ericsson, a benefit of vectorized VDSL2 lies in improved power management and lower power consumption, as the lines in a cable are decoupled in terms of interference. Claiming that the technology can work on existing copper lines, the company is pitching it at enterprise users and residential ISPs, as well as telecommunications companies building backhaul for mobile networks.
VDSL2 is a technology that some, such as BT, have mooted as a part of a nationwide, fiber-to-the-cabinet, next-generation access rollout. In this scenario, fiber connectivity would go as far as the street cabinet, while VDSL2 would then provide a high-speed connection between the cabinet and the customer premises. In August 2008, U.K. telecoms regulator Ofcom said this approach could make 50Mbps connections a reality for the majority of the country.
Ericsson's vectorized VDSL2 tests produced aggregated rates of more than 500Mbps over a distance of 500 meters, with six lines bonded into one cable bundle.
"This demonstration confirms Ericsson's leadership in broadband-access technology and our commitment to the continued research and development of DSL technology to improve operators' business with new access solutions," said Ericsson's chief technology officer, Håkan Eriksson, in the statement. "It also proves Ericsson's abilities to provide future mobile backhauling, which will enable quick and cost-effective introduction of long-term evolution (LTE) solutions."
Ericsson also said in its statement that vectorized VDSL2 could be used by operators to "enhance fiber-access deployments with copper access in the last mile and thereby maximize the reuse of existing infrastructure."
While standards for VDSL2 and line bonding have already been established, vectoring will be standardized by the end of this year, Ericsson claimed in its statement.
Source:ZDNet
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Ericsson shows off 550 Mbps broadband over copper
Updated:2009/3/19 10:18
BOFFINS WORKING FOR ERICSSON have showed off a broadband line that reaches speeds of 500Mbps using ordinary copper cables.
Based around Vectorized VDSL2 technology, the system is a Nintendo bit faster than the 2Mbps that most British punters have to put up with. To be fair, Ericsson joined six copper lines over 500m to manage this speed, but it still means that each wire was sending around 83 Mbps.
ADSL2+ can just manage 24Mbps and Virgin Media's own cable connection tops out at 50Mbps and both of these need crosstalk software to reduce the noise on the copper cables.
However if BT ever adopted it, it could save a fortune because it would not have to replace existing copper cables with expensive fibre optics. Even with a 83 Mbps speed, HDTV and video on demand is possible.
Ericsson, however, seems to think that VDSL2 will be better for fibre extensions and could be used to combine fibre-optical with last-mile copper depending on the environment.
Source:theinquirer
Updated:2009/3/18 11:48
Ericsson has successfully demonstrated data-transfer speeds of more than 500 megabits per second over copper, the communications company said Monday.
The data-transfer rates were achieved using a version of digital subscriber line (DSL) technology called "vectorized" VDSL2, Ericsson said in a statement. The technology, also called "crosstalk cancellation," provides the high transmission rates through a twisted pair of copper cables by reducing the noise coming from other pairs in the same cable bundle. VDSL2 has traditionally offered speeds of around 100Mbps.
According to Ericsson, a benefit of vectorized VDSL2 lies in improved power management and lower power consumption, as the lines in a cable are decoupled in terms of interference. Claiming that the technology can work on existing copper lines, the company is pitching it at enterprise users and residential ISPs, as well as telecommunications companies building backhaul for mobile networks.
VDSL2 is a technology that some, such as BT, have mooted as a part of a nationwide, fiber-to-the-cabinet, next-generation access rollout. In this scenario, fiber connectivity would go as far as the street cabinet, while VDSL2 would then provide a high-speed connection between the cabinet and the customer premises. In August 2008, U.K. telecoms regulator Ofcom said this approach could make 50Mbps connections a reality for the majority of the country.
Ericsson's vectorized VDSL2 tests produced aggregated rates of more than 500Mbps over a distance of 500 meters, with six lines bonded into one cable bundle.
"This demonstration confirms Ericsson's leadership in broadband-access technology and our commitment to the continued research and development of DSL technology to improve operators' business with new access solutions," said Ericsson's chief technology officer, Håkan Eriksson, in the statement. "It also proves Ericsson's abilities to provide future mobile backhauling, which will enable quick and cost-effective introduction of long-term evolution (LTE) solutions."
Ericsson also said in its statement that vectorized VDSL2 could be used by operators to "enhance fiber-access deployments with copper access in the last mile and thereby maximize the reuse of existing infrastructure."
While standards for VDSL2 and line bonding have already been established, vectoring will be standardized by the end of this year, Ericsson claimed in its statement.
Source:ZDNet
----------
Ericsson shows off 550 Mbps broadband over copper
Updated:2009/3/19 10:18
BOFFINS WORKING FOR ERICSSON have showed off a broadband line that reaches speeds of 500Mbps using ordinary copper cables.
Based around Vectorized VDSL2 technology, the system is a Nintendo bit faster than the 2Mbps that most British punters have to put up with. To be fair, Ericsson joined six copper lines over 500m to manage this speed, but it still means that each wire was sending around 83 Mbps.
ADSL2+ can just manage 24Mbps and Virgin Media's own cable connection tops out at 50Mbps and both of these need crosstalk software to reduce the noise on the copper cables.
However if BT ever adopted it, it could save a fortune because it would not have to replace existing copper cables with expensive fibre optics. Even with a 83 Mbps speed, HDTV and video on demand is possible.
Ericsson, however, seems to think that VDSL2 will be better for fibre extensions and could be used to combine fibre-optical with last-mile copper depending on the environment.
Source:theinquirer
