Sunday, March 15, 2009

Ericsson Claims 500 Mbps VDSL2

Ericsson has demonstrated a VDSL2-based technology that achieves data transfer rates of more than 500 Mbps (0.5 Gbps) over twisted copper pairs. The technology uses line bonding and crosstalk cancellation for DSL, also known as "vectorized" VDSL2. The demonstration showed aggregated rates of above 0.5Gbps at 500m, bonding six lines.

Ericsson said crosstalk cancellation (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 technology is suitable for fiber extensions, combining fiber and last -mile copper for backhauling.

HÃ¥kan Eriksson, CTO at Ericsson, says: "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. 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."