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Timing control in orthogonal frequency division multiplex systems based on effective signal-to-noise ratio

  • US 20060245347A1
  • Filed: 04/29/2005
  • Published: 11/02/2006
  • Est. Priority Date: 04/29/2005
  • Status: Active Grant
First Claim
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1. A method comprising:

  • using a current time reference to decode a plurality of orthogonal frequency division multiplex (OFDM) symbols in a plurality of time slots;

    measuring a packet error rate of the decoded OFDM symbols;

    determining an effective signal-to-noise ratio (SNR) metric from pilot tones of the demodulated OFDM symbols;

    based on the determined effective SNR metric, predicting a supportable packet error rate;

    comparing the measured packet error rate and the predicted packet error rate; and

    based on said comparing, adjusting the current time reference before decoding a next OFDM time slot.

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