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METHOD OF PROVIDING A DATA SIGNAL FOR CHANNEL ESTIMATION AND CIRCUIT THEREOF

  • US 20080304605A1
  • Filed: 07/31/2008
  • Published: 12/11/2008
  • Est. Priority Date: 10/31/2006
  • Status: Active Grant
First Claim
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1. A method of providing a data signal in a frequency domain corrected for distortion, comprising:

  • converting a received signal having pilots to a first signal having the pilots in the frequency domain;

    extracting the pilots from the first signal to obtain extracted pilots to form a second signal;

    using the second signal to provide a first estimate of a channel;

    converting the first estimate to the time domain;

    removing noise from the first estimate in the time domain to provide a second estimate of the channel in the time domain;

    determining an autocorrelation of the channel in the frequency domain using the second estimate of the channel;

    determining extension signals using the autocorrelation;

    appending the extension signals to the first estimate of the channel to obtain a third estimate of the channel; and

    using the third estimate to provide the data signal in the frequency domain.

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