The new ‘Zero Touch Vectoring’capability eliminates the need to upgrade every CPE in a copper node whenever the first customer opts for faster broadband access delivered over a VDSL2 vectored line. Previously, a carrier choosing to deploy VDSL2 Vectoring was required to upgrade every modem on the network in order to properly handle the crosstalk elimination.
Alcatel-Lucent introduced the first commercial VDSL2 Vectoring solution in September 2011, delivering 100 Mbps over existing copper loop lengths of 400 meters. VDSL2 vectoring uses digital signal processing to remove crosstalk between copper pairs in a bundle, similar to noise cancellation in headphones. From line cards at the central office or DSLAM, the system measures the crosstalk from all the lines in the bundle and then generates an anti-phase signal to cancel out the noise. Alcatel-Lucent developed its own chipset and software. The VDSL2 vectoring is delivered via a 48-port Board Level Vectoring card, a 48-port System Level Vectoring card, and a Vector Processing card supporting up to 384 ports.Alcatel-Lucent said it now has 6 commercial contracts for VDSL2 vectoring. The first live network is with Telekom Austria, which is using the technology in a suburb of Vienna.
Dave Geary, head of Alcatel-Lucent’s Wireline activities, said: “Trials with leading service providers have shown that VDSL2 Vectoring can effectively deliver the kinds of speeds it promised, and we are now starting to engage in mass-market deployments. With our Zero-Touch Vectoring and other innovations we are eliminating the final barriers that service providers around the world have faced – enabling them to deliver higher bandwidths to more subscribers, now.”
