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Unitary precoding based on randomized FFT matrices

  • US 9,106,287 B2
  • Filed: 05/02/2014
  • Issued: 08/11/2015
  • Est. Priority Date: 10/28/2005
  • Status: Active Grant
First Claim
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1. A method that facilitates providing channel related feedback for precoding in a wireless communication system, comprising:

  • using a set of unitary matrices, each of the unitary matrices being generated by a processor based upon a diagonal matrix associated with a random phase and a Discrete Fourier Transform (DFT) matrix;

    selecting a particular unitary matrix from the set of unitary matrices based upon an estimate, provided by a feedback evaluator, of a forward link channel; and

    transmitting an index associated with the particular unitary matrix via a reverse link channel.

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