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   G.Fast DSL

G.fast a digital subscriber line protocol standard that is used in short local loops (less than 500 meters) that can have data rates of up to 1 Gbps. The G.fast ITU specifications are G.9700 and G.9701. G.fast DSL uses discrete multi-tone (DMT) modulation with a 106 MHz profile. The power density of the G.fast signal can be adjusted to minimize interference with the FM radio frequency band. G.fast uses TDD to enable flexible uplink and downlink speeds from 10/90 to 90/10 duplex transmission rates. G.fast reduced wire pair crosstalk by using vectoring cancellation.

 

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