Half-duplex echo canceler training using a pilot signal

  • US 5,828,657 A
  • Filed: 09/29/1995
  • Issued: 10/27/1998
  • Est. Priority Date: 09/29/1995
  • Status: Expired due to Term
First Claim
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1. Data communications equipment apparatus comprising:

  • an echo canceler that is trained during an echo-canceler training phase of a half duplex training sequence with a far-end data communications equipment while the communication channel is operating in a linear mode; and

    a filter that filters a received signal during the echo-canceler training phase to remove a pilot signal transmitted by the far-end data communications equipment before application of the received signal to the echo canceler to train the echo canceler on an echo signal component thereof.

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