07 Dec Ron Sterenson, VP R&D to Present at Globecom
Ron Sterenson, co-founder and VP of R&D at Sckipio Technologies will be presenting a 16-port vectoring demo of G.fast at Globecom in Austin, Texas, December 11, 2014. Come check out the live demo at Globecom.
ID-26: Title: G.fast Transceivers with 16-port Vectoring
Track: Enabling Technologies
Presentation: 4:20-4:40 pm
Authors: Rami Verbin firstname.lastname@example.org Israel Sckipio Technologies
Abstract: In December the ITU-T is going to approve a new communications standard, G.9701 – also known as G.fast. This new broadband standard is designed to deliver ultra broadband performance over short copper lines, up to 400m, shorter than traditional xDSL. Using a spectrum of 2-106Mhz, the G.fast transceivers are designed to deliver up to 1Gbps. The G.fast technology allows the telephone companies to enhance their broadband services avoiding the need to deploy fiber all the way to the customer’s house. The result is lower CAPEX and much faster return on investment.
The existing copper pairs were never planned for use up to 106MHz. The result is very high cross-talk between the different lines in the binder. This cross-talk may in some cases be even higher than the signal level received over the direct channel. To be able to support the very high target bit-rates, G.fast is implementing cross-talk cancellation scheme known as “vectoring”. Implementing vectoring over large number of ports, very wide bandwidth and high cross-talk is a challenging task. The channel matrix in the higher frequencies is typically bad conditioned which makes it even harder to invert. Furthermore, the wide bandwidth and the large number of ofdm carriers results in tough HW requirements from number of different aspects, i.e., processing power, memory size and high speed communication needed for exchanging information between the different ports.
The main goal of the demonstration is to prove the viability of G.fast modems in a real-world environment. The demonstration will include 16 consumer premises equipment (CPE) devices (essentially G.fast to Ethernet bridges) connected to a single 16-port DPU device via a 50 meter CAT-3/0.5mm binder. The DPU device is using four 4-port G.fast chipsets exchanging high speed information between them to implemented vectoring internally, without a need for any additional hardware. Performance with and without vectoring will be demonstrated to indicate the effectiveness of the cross-talk mitigation scheme.