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Method and Receiver for Identifying a Leading Edge Time Period in a Received Radio Signal

  • US 20090170458A1
  • Filed: 07/19/2005
  • Published: 07/02/2009
  • Est. Priority Date: 07/19/2005
  • Status: Abandoned Application
First Claim
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1. A method for identifying a leading edge time period of a received radio signal, comprising:

  • identifying a greatest energy time period in a sequence of time periods, the received radio signal having a greatest average energy in the greatest energy time period;

    identifying a least energy time period in the sequence of time periods, the received radio signal having a least average energy in the least energy time period;

    setting a threshold energy based on the greatest average energy and the least average energy;

    determining a number of window time periods based on a characteristic of a radio channel used by the received radio signal; and

    identifying as a leading edge time period an earliest time period that precedes the greatest energy time period within the number of window time periods, and the received radio signal in the leading edge time period having an average energy greater than or equal to the threshold energy.

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