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Method and system to correct for Doppler shift in moving nodes of a wireless network

  • US 20070213085A1
  • Filed: 03/13/2006
  • Published: 09/13/2007
  • Est. Priority Date: 03/13/2006
  • Status: Abandoned Application
First Claim
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1. A method to reduce Doppler induced errors in mobile nodes of a wireless network, the method comprising:

  • receiving a Doppler shifted signal having a Doppler shifted transmission frequency at a mobile node moving at a velocity;

    measuring an acceleration of the mobile node in three directions;

    generating an array of Doppler shifted frequency estimates based on the measured acceleration and a previously generated pseudo-transmission frequency;

    generating a current pseudo-transmission frequency based on the array of Doppler shifted frequency estimates; and

    tracking the Doppler shifted transmission frequency of the received signal to the current pseudo-transmission frequency.

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