Near-end crosstalk cancellation
AssigneeGenesis Technical Systems Corp.
InventorsDavid W. LINNEY, Stephen Peter COOKE, Peter KHOURY
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Abstract
The present disclosure relates to near-end crosstalk (NEXT) cancellation. A transmit communication signal is transmitted over a first Digital Subscriber Line (DSL) connection using a first group of frequencies and a receive communication signal is received over a second DSL connection using a second group of frequencies that at least partially overlaps the first group of frequencies. A crosstalk correlation between the first and second communication signals is determined. Based on the crosstalk correlation, a crosstalk cancellation signal is generated. The crosstalk cancellation signal is subtracted from the second communication signal, with the intention of reducing NEXT.
Claims24
A communication device comprising:
- a transmitter to transmit a first communication signal over a first Digital Subscriber Line (DSL) connection using a first group of frequencies;
- a receiver to receive a second communication signal over a second DSL connection using a second group of frequencies that at least partially overlaps the first group of frequencies;
- a Near-End Crosstalk (NEXT) canceller, coupled to the transmitter and to the receiver, to determine a crosstalk correlation between the first communication signal and the second communication signal, to generate a crosstalk cancellation signal based on the crosstalk correlation, and to subtract the crosstalk cancellation signal from the second communication signal.
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A method comprising:
- determining a crosstalk correlation between a first communication signal that is transmitted over a first Digital Subscriber Line (DSL) connection using a first group of frequencies and a second communication signal that is received over a second DSL connection using a second group of frequencies that at least partially overlaps the first group of frequencies;
- generating a crosstalk cancellation signal based on the crosstalk correlation;
- subtracting the crosstalk cancellation signal from the second communication signal.
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Dependencies are inferred from the claim text.