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Low complexity frequency domain echo canceller for DMT transceivers

  • US 6,377,683 B1
  • Filed: 05/29/1998
  • Issued: 04/23/2002
  • Est. Priority Date: 05/29/1998
  • Status: Expired due to Term
First Claim
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1. An echo canceling method for use in a full-duplex DMT transceiver comprising the steps:

  • calculating a transmit echo frequency characteristic;

    transmitting a data signal;

    receiving a composite signal consisting of a data signal from a distant end transmitter and a transmit echo signal;

    transforming the received composite signal to a received composite frequency signal;

    generating a replica of the transmit echo signal using the transmit echo frequency characteristic; and

    subtracting the replica from the received composite frequency signal.

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