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Apparatus and method for implementing SDMA in multi-user multi-antenna system

  • US 7,830,840 B2
  • Filed: 04/25/2007
  • Issued: 11/09/2010
  • Est. Priority Date: 04/25/2006
  • Status: Active Grant
First Claim
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1. A method for implementing Spatial Division Multiple Access (SDMA) in a multi-user multi-antenna system, comprising:

  • selecting SDMA users from among total users according to channel state information of the total users; and

    determining the number of transmission streams to be allocated to each of the SDMA users by a tree search method,wherein the determination comprises selecting a tree search method for determining the number of transmission streams for each SDMA user, and determining the number of transmission streams for each SDMA user by the selected tree search method.

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