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Antenna array calibration for wireless communication systems

  • US 8,498,669 B2
  • Filed: 04/04/2006
  • Issued: 07/30/2013
  • Est. Priority Date: 06/16/2005
  • Status: Active Grant
First Claim
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1. A method of calibrating an antenna array in a wireless network, comprising:

  • receiving first channel estimate information corresponding to transmissions to a first access terminal;

    determining second channel estimate information corresponding to transmissions from the first access terminal;

    receiving third channel estimate information corresponding to transmissions to a second access terminal;

    determining fourth channel estimate information corresponding to transmissions from the second access terminal; and

    determining a calibration ratio based upon the first, second, third, and fourth channel estimate information for at least the first and second access terminals,wherein determining the calibration ratio comprises;

    determining a first calibration ratio based upon the first and second channel estimate information;

    determining second calibration ratio based upon the third and fourth channel estimate information; and

    determining the calibration ratio based upon combining the first and second calibration ratios.

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