Systems and methods for adaptive VDSL with variable sampling...

Details Systems and methods for adaptive VDSL with variable sampling... Systems and methods for adaptive VDSL with variable sampling...

2008-04-01

2008-04-01

Fan, Chieh M. (Department: 2611)

Pulse or digital communications

Equalizers

C375S222000, C375S219000

Reexamination Certificate

active

11282109

ABSTRACT:
A method and system for enhancing reach-performance of a multi-carrier VDSL System estimates loop length, estimates maximum available bandwidth that can be utilized at that particular loop length, optimally selects an FFT size and sampling rate, and decides whether to apply a time domain equalization to its receiver and if so, selects a cyclic extension size. To minimize the implementation complexity, the sampling frequencies at receiver and transmitter are lowered to match the actual usable bandwidth. The FFT/IFFT sizes in the implementation are also required to set appropriately accordingly.

REFERENCES:
patent: 6678318 (2004-01-01), Lai
patent: 6690717 (2004-02-01), Kim et al.
patent: 7010027 (2006-03-01), Mestdagh et al.
patent: 7072391 (2006-07-01), Oksman et al.
patent: 2002/0006167 (2002-01-01), McFarland

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