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Method for Interference Estimation for Orthogonal Pilot Patterns

  • US 20080298227A1
  • Filed: 05/31/2007
  • Published: 12/04/2008
  • Est. Priority Date: 05/31/2007
  • Status: Active Grant
First Claim
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1. A method of accurately estimating inter-cell interference in a received signal transmitted in a given sector in an OFDM communication system receiver, comprising, when pilot and data subcarriers are subject to the same interference and the propagation channel is approximately constant across subcarriers spanned by a predetermined number of consecutive pilot signals that are orthogonal across sectors:

  • processing the received signal to generate a first set of propagation channel samples that remove the effects of orthogonal pilot patterns;

    generating a propagation channel estimate from the first set of propagation channel samples;

    processing the received signal to generate a second set of propagation channel samples that include the effects of orthogonal pilot patterns;

    estimating inter-cell interference in the received signal by subtracting the propagation channel estimate from the second propagation channel samples.

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