Method and apparatus for generating a line impairment learning signal for a data communication system

  • US 6,332,009 B2
  • Filed: 11/13/1997
  • Issued: 12/18/2001
  • Est. Priority Date: 09/03/1997
  • Status: Expired due to Term
First Claim
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1. A line impairment learning method for use in a data communication system having a first device configured to transmit data to a second device over a communication channel, said method comprising the steps of:

  • defining a learning sequence descriptor having a training symbol order;

    receiving, at said first device, information indicative of said learning sequence descriptor;

    generating a learning signal for transmission from said first device to said second device over said communication channel, said learning signal comprising a number of segments, each of said segments being associated with a sequence of pulse code modulation (PCM) symbols configured in accordance with said learning sequence descriptor;

    wherein said training symbol order is indicative of an assignment of a plurality of PCM training symbols to said number of segments, receiving, at said second device, said learning signal; and

    performing, at said second device, a line impairment analysis responsive to said learning signal and said learning sequence descriptor.

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