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
Patent Images

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.

View all claims

    Thank you for your feedback