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Adaptive channel prediction apparatus and method for performing uplink pre-equalization depending on downlink channel variation in OFDM/TDD mobile communication system

  • US 20070211747A1
  • Filed: 02/21/2007
  • Published: 09/13/2007
  • Est. Priority Date: 02/21/2006
  • Status: Active Grant
First Claim
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1. An adaptive channel prediction method for performing uplink pre-equalization based on downlink channel variation in an OFDM/TDD mobile communication system, the method comprising the steps of:

  • setting N number of Doppler frequency ranges according to uplink channel variation degrees, and establishing channel prediction schemes corresponding to the respective Doppler frequency ranges;

    measuring a Doppler frequency from a signal received over a downlink channel;

    determining the Doppler frequency range, within which the measured Doppler frequency is included, from among the N number of Doppler frequency ranges, and selecting the channel prediction scheme established corresponding to the determined Doppler frequency; and

    performing the uplink pre-equalization by using the selected channel prediction scheme.

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