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Method and system for communication channel optimization in a multiple-input multiple-output (MIMO) communication system

  • US 8,374,275 B2
  • Filed: 06/23/2007
  • Issued: 02/12/2013
  • Est. Priority Date: 06/23/2007
  • Status: Active Grant
First Claim
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1. A transmission method in a multiple-input multiple-output (MIMO) communication system, the method comprising the steps of:

  • receiving feedback data representing channel state information from respective receivers of the MIMO communication system;

    grouping the receivers into one or more groups based on the received feedback data;

    obtaining a precoding matrix for each group of receivers, wherein the precoding matrix is obtained based on the received feedback data such that precoding vectors or sub-matrices in the precoding matrix associated with respective receivers of said each group of receivers are orthogonal to each other; and

    applying the precoding matrix to input signals for transmission to said each group of receivers.

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