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Measuring an error rate in a communication link

  • US 20040107391A1
  • Filed: 04/09/2003
  • Published: 06/03/2004
  • Est. Priority Date: 12/03/2002
  • Status: Active Grant
First Claim
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1. An error rate detector comprising:

  • a memory adapted to receive a sequence transmitted over a communications link and to maintain a running history of a selected size for the received sequence;

    a sequence generator adapted to generate an independent test sequence;

    a comparator, responsive to the memory and the sequence generator, the comparator adapted to compare the received sequence with the test sequence;

    an error rate calculator, responsive to the comparator, for generating a measure of the error rate of the communication link; and

    a synchronization monitor, responsive to the comparator, and adapted to provide a signal to reload the sequence generator based on the stored history in the memory when a measure of the synchronization between the received sequence and the test sequence reaches a selected level.

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