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US 8,559,292 B2Granted
Determining of coupling coefficients in a vector transmission system
AssigneeLantiq Deutschland GmbH
InventorHeinrich Schenk
Life of this patent
Estimating the term…
Abstract
Embodiments related to determining of coupling coefficients in a Vector transmission system are described and depicted.
Claims11
A method comprising:
- assigning each subcarrier of a plurality of subcarriers to one of a plurality of channels;
- for each channel of the plurality of channels, generating a Discrete Multi-tone Transmission DMT symbol by modulating the subcarrier assigned to a respective channel with a non-zero subcarrier symbol and modulating the subcarriers which are not assigned to the respective channel with a zero subcarrier symbol, wherein each channel of the plurality of channels includes a plurality of zero subcarrier symbols;
- and
- transmitting the respective DMT symbol for each of the plurality of channels.
1 more element
A device comprising:
- an output to transmit a Far End Cross Coupling FEXT training signal over a first channel;
- and
- a modulation entity to generate the FEXT training signal,
- wherein the modulation entity is operable to selectively modulate a non-zero subcarrier symbol or a zero subcarrier symbol on each subcarrier of a plurality of subcarriers, the modulation entity further operable to generate the FEXT training signal by modulating a non-zero subcarrier symbol on each subcarrier indicated by information and to modulate a plurality of zero subcarrier symbols on each remaining subcarrier associated with the FEXT training signal.
1 more element
A device comprising:
- an input to receive a Far End Cross Coupling FEXT training signal, which includes a predetermined non-zero subcarrier symbol and a plurality of zero subcarrier symbols, that is transmitted over a first channel;
- and
- an entity operable to demodulate the FEXT training signal and to measure FEXT coupling for each subcarrier of a plurality of subcarriers which is indicated by first information to be assigned as a currently active subcarrier for the first channel.
Dependencies are inferred from the claim text.