Method and apparatus for information feedback and precoding

  • US 9,042,474 B2
  • Filed: 04/07/2010
  • Issued: 05/26/2015
  • Est. Priority Date: 04/07/2010
  • Status: Active Grant
First Claim
Patent Images

1. A method for processing communication data at a user equipment in a wireless communication system, comprising:

  • deriving a spatial correlation matrix R of multiple transmit antennas of a base station based on an obtained downlink channel transmission matrix H;

    transforming a precoding codebook F according to the spatial correlation matrix R;

    selecting a precoding matrix Fs based on the transformed precoding codebook; and

    feeding back information about the spatial correlation matrix R and information about the selected precoding matrix Fs to the base station, wherein the information about the selected precoding matrix Fs includes an index of the selected precoding matrix Fs in the precoding codebook, and the information about the spatial correlation matrix R includes an index of the spatial correlation matrix R in a spatial correlation matrix codebook.

View all claims
    ×
    ×

    Thank you for your feedback

    ×
    ×