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Device and method for determining the deviation of the carrier frequency of a mobile radio device from the carrier frequency of a base station

  • US 8,331,492 B2
  • Filed: 01/03/2005
  • Issued: 12/11/2012
  • Est. Priority Date: 07/04/2002
  • Status: Expired due to Fees
First Claim
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1. A device for determining the discrepancy between the carrier frequency of a mobile radio and the carrier frequency of at least one base station, with a sequence of complex pilot symbols which is known in the mobile radio being transmitted by radio from each base station to the mobile radio, comprising:

  • a first unit configured to calculate terms, with one term being formed from at least two different pilot symbols in the sequence received by the mobile radio, and in which case the phase difference between the two pilot symbols can be determined from the one term;

    a second unit configured to form groups from the terms, with at least one term being assigned to one group on the basis of features of the pilot symbols on which the at least one term is based; and

    a third unit configured to calculate the frequency discrepancy on the basis of the terms in at least one group.

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