Ericsson claims first 0.5Gbps data rate over VDSL2
Ericsson claims to have performed the first live demonstration of a VDSL2-based broadband technology achieving data transfer rates of more than 0.5Gbps over twisted copper pairs using the technology for line bonding and crosstalk cancellation for DSL, known also as ‘vectorised’ VDSL2.
Achieving 0.5Gbps speeds over existing copper lines open-up new opportunities for operators to provide customers with broadband services such as IPTV, Ericsson says; the new technology also makes possible use of 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 enables very 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, while the standardisation of Vectoring is ongoing, expected by the end of 2009.