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CHANNEL ESTIMATION USING FREQUENCY SMOOTHING

  • US 20080219339A1
  • Filed: 09/11/2007
  • Published: 09/11/2008
  • Est. Priority Date: 03/09/2007
  • Status: Active Grant
First Claim
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1. A method for supplying a frequency-smoothed communications training signal, the method comprising:

  • generating a frequency-smoothed unbiased training signal in a quadrature modulation transmitter, the frequency-smoothed unbiased training signal including;

    a plurality of pilot signal products;

    where each pilot signal product includes complex plane information represented by a reference frequency subcarrier, multiplying complex plane information represented by mirror frequency subcarrier; and

    ,where the sum of the plurality of pilot signal products is equal to zero; and

    ,supplying the frequency-smoothed unbiased training signal within a single symbol period.

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