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FEEDBACK CHANNEL DESIGN FOR MULTIPLE-INPUT MULTIPLE-OUTPUT COMMUNICATION SYSTEMS

  • US 20070195908A1
  • Filed: 02/20/2007
  • Published: 08/23/2007
  • Est. Priority Date: 02/21/2006
  • Status: Active Grant
First Claim
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1. A method of sending feedback from an access terminal (AT) to a base transceiver station (BTS) of a radio network configured to communicate with the access terminal using multiple-in multiple-out (MIMO) technique, the method comprising:

  • determining MIMO rank information of a first forward link between the BTS and the AT;

    determining MIMO spatial signature information of the forward link; and

    simultaneously transmitting(1) the MIMO rank information and the MIMO spatial signature information on an In-Phase signal component of a reverse link between the BTS and the AT, and(2) data rate control (DRC) information for a forward link on a Quadrature signal component of the reverse link.

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