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Link quality prediction

  • US 7,440,412 B2
  • Filed: 03/13/2006
  • Issued: 10/21/2008
  • Est. Priority Date: 03/13/2006
  • Status: Active Grant
First Claim
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1. A method of predicting link quality of a link, comprising:

  • receiving multi-carrier modulated signals over a period of time;

    estimating an signal to noise ratio (SNR) for each received sub-carrier;

    constructing a sequence of the SNRs;

    estimating link packet error rate (PER) based upon knowledge of encoding used during transmission and the sequence;

    wherein estimating link PER based upon knowledge of encoding used during transmission, and the sequence comprises;

    convolving the sequence with codewords, wherein the codewords are constructed based upon knowledge of the encoding at a transmitter;

    generating a sequence of probability of error values by mapping each output of the convolution;

    estimating link PER by summing the probability of error values.

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