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TERMINAL APPARATUS, BASE STATION, RADIO COMMUNICATION METHOD AND PROGRAM STORAGE MEDIUM

  • US 20090154411A1
  • Filed: 09/15/2008
  • Published: 06/18/2009
  • Est. Priority Date: 12/18/2007
  • Status: Abandoned Application
First Claim
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1. A terminal apparatus comprising:

  • a reception unit configured to receive a signal from a base station;

    a channel estimation unit configured to estimate a state of a channel based on a received signal to obtain an estimated state value of the channel;

    a storage configured to store a codebook including a plurality of channel state values;

    an index of search number acquisition unit configured to acquire index of search number representing a number of candidates to be selected from among the channel state values in the codebook for a correlation calculation with the estimated state value;

    a candidate selecting unit configured to select candidates for which the correlation calculation with the estimated state value should be performed from among the channel state values according to the index of search number;

    a correlation calculation unit configured to calculate a correlation between the estimated state value and each of selected candidates;

    a selection unit configured to select a candidate having a highest correlation value from among the selected candidates; and

    a reporting unit configured to report a selected candidate to the base station.

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