ADTRAN offers frequency division vectoring for VDSL2, G.fast

ADTRAN, Inc. (NASDAQ:ADTN) has unveiled Frequency Division Vectoring (FDV), which it says will enable G.fast and VDSL2 vectoring technologies to work in tandem across a single subscriber line.

The patent-pending technology will enable service providers to introduce G.fast selectively within an existing fiber to the cabinet (FTTC) network without disturbing the existing VDSL2 customer base.

G.fast is hailed as a means of enabling service providers to offer data rates between 100 Mbps and 1 Gbps over existing copper infrastructure, particularly in applications where the installation of fiber is either impossible or prohibitively expensive (watch the video ''ADTRAN makes the chase for VDSL2, G.fast alongside FTTH"). ADTRAN believes FDV will hasten the deployment of G.fast technology when it becomes available. The ITU-T is expected to finalize its G.fast standards later this year.

"While G.fast and VDSL2 have always been seen as complementary technologies, the limitations of G.fast have been exposed when forced to operate in a VDSL2-compatible mode at higher rates," said Jeff Heynen, principal analyst, broadband access and pay TV, Infonetics. "As service providers look to build out their G.fast adoption strategies, ADTRAN’s FDV technology has a key performance impact by allowing G.fast and vectored VDSL2 technologies to work in concert to boost performance. Service providers can now maximize a broader market opportunity without wasting unused bandwidth in their networks or prematurely forcing subscribers served by 100-Mbps VDSL2 to move to G.fast."

ADTRAN did not reveal when it would offer FDV or G.fast technology commercially.

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