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WIRELESS TRANSMISSION APPARATUS AND PRECODING METHOD

  • US 20120014279A1
  • Filed: 02/23/2010
  • Published: 01/19/2012
  • Est. Priority Date: 02/24/2009
  • Status: Active Grant
First Claim
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1. A radio transmission apparatus for transmitting a plurality of streams to a radio reception apparatus, the radio transmission apparatus comprising:

  • a determining section that determines the number of spatial multiplexing streams based on a desired number of multiple paths and the number of receiving antenna ports of the radio reception apparatus, the desired number of multiple paths being calculated based on a detected number of multiple paths, the number of receiving antenna ports and a desired error rate of the plurality of streams;

    a dividing section that divides transmission data into the determined number of spatial multiplexing streams;

    a calculating section that calculates transmission weights based on the desired number of multiple paths, the determined number of spatial multiplexing streams and a channel estimation value; and

    a precoding section that performs a precoding on the determined number of streams using the calculated transmission weights.

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