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Packet detection in the presence of platform noise in a wireless network

  • US 7,636,404 B2
  • Filed: 12/30/2005
  • Issued: 12/22/2009
  • Est. Priority Date: 11/21/2005
  • Status: Expired due to Fees
First Claim
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1. A method for use in a wireless device comprising:

  • performing a correlation operation using a signal at an input of a wireless receiver to generate a correlation result;

    comparing said correlation result to a threshold value;

    making a packet arrival decision based on a result of said comparison; and

    occasionally updating said threshold value to enhance packet detection performance in the wireless receiver, wherein occasionally updating said threshold value includes determining a new threshold value to achieve a tradeoff between packet detection false alarm rate and missed packet detection rate within the wireless receiver;

    wherein determining a new threshold value to achieve a tradeoff between packet detection false alarm rate and missed packet detection rate within the wireless receiver includes;

    determining a threshold value (ThFA) that will achieve a target false alarm rate in said wireless receiver;

    determining a threshold value range based on ThFA; and

    searching said threshold value range for a value that achieves a best packet detection rate in the wireless receiver.

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