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MIMO WLAN system

  • US 9,013,974 B2
  • Filed: 08/13/2014
  • Issued: 04/21/2015
  • Est. Priority Date: 10/25/2002
  • Status: Expired due to Term
First Claim
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1. A method of transmitting and receiving pilots in a wireless multiple-input multiple-output (MIMO) communication system, comprising:

  • transmitting a MIMO pilot on a forward channel from a plurality of antennas and on a first communication link via a plurality of transmission channels, wherein the MIMO pilot comprises a plurality of pilot transmissions sent from the plurality of antennas, and wherein the pilot transmission from each antenna is configured to be identifiable by a communicating entity receiving the MIMO pilot; and

    receiving a steered pilot on a reverse channel via a plurality of eigenmodes of a second communication link from the communicating entity, wherein at least some of the plurality of eigenmodes are used for data transmission, and wherein the steered pilot is generated based on the MIMO pilot and a channel response matrix for the plurality of transmission channels.

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