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Method and apparatus for utilizing channel state information in a wireless communication system

  • US 7,949,060 B2
  • Filed: 09/04/2009
  • Issued: 05/24/2011
  • Est. Priority Date: 03/23/2001
  • Status: Expired due to Fees
First Claim
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1. A method for reporting channel state information (CSI) in a multiple-input multiple-output (MIMO) communication system, comprising:

  • receiving a plurality of signals via a plurality of receive antennas, wherein the received signal from each receive antenna comprises a combination of one or more signals transmitted from the transmitter unit;

    processing the received signals to derive channel state information (CSI) indicative of characteristics of a plurality of transmission channels used for data transmission;

    transmitting the CSI back to the transmitter unit; and

    transmitting differential updates to the CSI back to the transmitter unit.

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