Unitary precoding based on randomized FFT matrices

Unitary precoding based on randomized FFT matrices

  • CN 101,529,736 A
  • Filed: 10/30/2006
  • Published: 09/09/2009
  • Est. Priority Date: 10/28/2005
  • Status: Active Application
First Claim
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1. method that helps to be provided for the channel related feedback of precoding in the wireless communication system, it comprises:

  • One group of unitary matrix of construction, each in the described unitary matrix are based on diagonal matrix and discrete Fourier transform (DFT) (DFT) matrix and produce;

    Estimation based on forward link channel is selected particular unitary matrix from described group of unitary matrix;

    AndTransmit the index that is associated with described particular unitary matrix via reverse chain channel.

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