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Spread spectrum receiver performance improvement

  • US 6,606,349 B1
  • Filed: 02/04/1999
  • Issued: 08/12/2003
  • Est. Priority Date: 02/04/1999
  • Status: Expired due to Term
First Claim
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1. A method for improving reception of spread spectrum communications, the method comprising:

  • receiving a spread spectrum signal;

    determining the strength of the spread spectrum signal;

    correlating the spread spectrum signal with a particular PN code to produce a correlated output;

    adjusting a threshold value based on the signal strength of the spread spectrum signal to a first predetermined threshold level;

    comparing the correlated output to the threshold value to determine whether the particular PN code is present in the spread spectrum signal;

    adjusting the threshold value of the spread spectrum signal to a next predetermined threshold level if a final threshold level is not equal to the next predetermined threshold level; and

    switching between active and passive antenna operation mode depending on the signal strength.

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