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Method and precoder information feedback in multi-antenna wireless communication systems

  • US 9,401,750 B2
  • Filed: 11/25/2015
  • Issued: 07/26/2016
  • Est. Priority Date: 05/05/2010
  • Status: Active Grant
First Claim
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1. A wireless communication device configured for sending precoder matrix information to a base station, the device comprising:

  • a transmitter configured for sending the precoder matrix information to the base station, the precoder matrix information comprising;

    a first representation of a first matrix chosen from a first codebook and a second representation of a second matrix chosen from a second codebook, the first matrix having at least two column vectors, the first representation and the second representation together conveying a precoder matrix of one or more vectors associated with one or more spatial layers; and

    the precoder matrix comprising a first sub-precoder matrix including a first set of weights on a first subset of transmit antennas of the base station and a second sub-precoder matrix including a second set of weights on a second subset of transmit antennas of the base station, the first and the second subsets of transmit antennas of the base station being non-overlapping, the first sub-precoder matrix and the second sub-precoder matrix comprising one or more column vectors of the first matrix corresponding to the first representation multiplied by one or more entries of the second matrix corresponding to the second representation.

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