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Wireless communications system, wireless communications apparatus, wireless communications method and computer program for wireless communication

  • US 8,249,002 B2
  • Filed: 10/30/2008
  • Issued: 08/21/2012
  • Est. Priority Date: 11/05/2003
  • Status: Active Grant
First Claim
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1. A wireless communication apparatus for transmitting a signal by multiplexing the signal using a plurality of antennas, the apparatus comprising:

  • a channel information acquirer which obtains channel information representing a characteristic of a channel linking the apparatus to a receiver;

    a matrix determiner which determines a weighting coefficient matrix for transmit antennas based on the obtained channel information;

    a training signal sender which sends training signals for channel estimation at the receiver, the training signals being weighted by weights included in the weighting coefficient matrix determined by the matrix determiner.

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