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Active cancellation of interference in a wireless communication system

  • US 8,755,756 B1
  • Filed: 04/28/2010
  • Issued: 06/17/2014
  • Est. Priority Date: 04/29/2009
  • Status: Expired due to Fees
First Claim
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1. A method of performing active interference cancellation in a system including multiple radios, wherein signals from a first radio are received as interference at a second radio, the method comprising:

  • providing interference conditioning, which manipulates an interference reference of the interference at the first radio to approximate an interference observed at the second radio, the first radio coupled to the second radio;

    tuning the interference conditioning using a least mean square (LMS) technique; and

    removing the interference based on the tuning,wherein the tuning the interference conditioning using the LMS technique is performed for a block of samples from the first radio, and wherein the tuning includes adjusting a step size according to a block size.

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