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Thursday, March 19, 2009
Ericsson Achieves First 0.5Gbps Data Rate With New VDSL2-based Broadband Technology

Ericsson has performed the world's first live demonstration of a VDSL2-based technology achieving data transfer rates of more than 0.5Gbps.

The Ericsson demonstration achieved data rates of more than 0,5 Gbps over twisted copper pairs using the latest technology for line bonding and crosstalk cancellation for DSL, also known as "vectorized" VDSL2. The technology is suitable for fiber extensions, combining fiber and last-mile copper for backhauling.

This VDSL2-based technology offers unprecedented speeds on existing copper lines, opening up new opportunities for operators to provide customers with broadband services such as IPTV. With this technology, operators can enhance fiber access deployments with copper access in the last mile and thereby maximize the reuse of existing infrastructure.

The new technology also makes it possible to use existing copper networks as a backhaul for radio base stations, accelerating future rollout of HSPA and LTE-based high-speed mobile broadband services.

Crosstalk cancellation, also known as vectorized VDSL2, enables extremely high end-to-end transmission rates, improving VDSL2 performance by reducing noise originating from the other copper pairs in the same cable bundle. This increases capacity and reach, boosting the number of customers that can be connected. Vectoring technology also decouples the lines in a cable (from an interference point of view), substantially improving power management, which can reduce power consumption.

Line bonding means bundling several lines into one and assumes that several copper lines are available at the site, which is typically the case. The demonstration showed aggregated rates of above 0.5Gbps at 500m, bonding six lines. Standards for VDSL2 and line bonding are available today, while the standardization of Vectoring is ongoing and is expected by the end of 2009.

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