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Interference detection, identification, extraction and reporting

  • US 6,704,378 B2
  • Filed: 03/08/2002
  • Issued: 03/09/2004
  • Est. Priority Date: 04/28/1999
  • Status: Expired due to Term
First Claim
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1. A method of detecting and eliminating narrowband interference in a wideband communication signal having a frequency bandwidth with narrowband channels disposed therein, wherein guard bands having guard band frequencies adjacent the frequency bandwidth, the method comprising:

  • scanning at least some of the narrowband channels to determine signal strengths in at least some of the narrowband channels;

    determining a threshold based on the signal strengths in at least some of the narrowband channels;

    scanning the guard band frequencies to determine guard band signal strengths; and

    filtering a guard band frequency when the guard band signal strength exceeds the threshold.

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