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PRE-CODING METHOD FOR SPATIAL MULTIPLEXING IN MULTIPLE INPUT AND OUTPUT SYSTEM

  • US 20110280188A1
  • Filed: 11/02/2009
  • Published: 11/17/2011
  • Est. Priority Date: 11/02/2008
  • Status: Active Grant
First Claim
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1. A method for performing spatial multiplexing precoding in a transmitting device that includes a plurality of antennas, the method comprising:

  • performing a beam searching process for beamforming with a receiving device that includes a plurality of antennas;

    transmitting a first packet comprising at least one training sequence to the receiving device after performing the beam searching process;

    receiving a second packet comprising feedback information for precoding from the receiving device, wherein the feedback information is determined using the training sequence; and

    performing spatial multiplexing precoding for data streams to be transmitted to the receiving device, by using a precoding matrix obtained based on the feedback information.

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