Poppler spread/velcocity estimation in mobile wireless communication device and methods thereof

Poppler spread/velcocity estimation in mobile wireless communication device and methods thereof

  • CN 1,529,970 B
  • Filed: 04/18/2002
  • Issued: 11/28/2012
  • Est. Priority Date: 05/31/2001
  • Status: Active Grant
First Claim
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1. the method for an estimating Doppler broadening in mobile radio communication apparatus, it comprises:

  • The value that the auto-correlation of the impulse response of the channel that estimation first and second postpones is estimated, the amplitude of said second delay is bigger than the amplitude of said first delay;

    Confirm first ratio between first difference and second difference,Difference between the estimated value that said first difference is first delay place and the estimated value of second delay place,Said second difference is the difference between first sum of products, second product, and said first product is second to postpone square to state with the first delay place product of estimated value, and said second product is the product that estimated value is stated in first delay square and the second delay place;

    If said first ratio is greater than 0, then;

    Confirm the square root of first ratio;

    AndConfirm the proportional Doppler broadening of square root with said first ratio.

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