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ANTENNA COMBINING FOR MASSIVE MIMO SCHEME

  • US 20160173252A1
  • Filed: 02/21/2014
  • Published: 06/16/2016
  • Est. Priority Date: 08/09/2013
  • Status: Active Grant
First Claim
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1. A method for a base station to operate in a wireless communication system employing a massive MIMO (Multiple Input Multiple Output) scheme, the method comprising:

  • receiving first pilot signals transmitted via each of multiple antennas of a user equipment (UE);

    selecting one or more reference codebooks based on channel qualities of the received first pilot signals;

    selecting one or more sub-channels for each of the reference codebooks;

    determining one or more virtual channels, wherein each of the virtual channels comprises one reference codebook among the one or more reference codebooks and the one or more sub channels selected for the one reference codebook, wherein the sub-channels are selected to minimum distance between corresponding virtual channel and corresponding reference codebook;

    transmitting antenna combining information to the UE, wherein the antenna combining information combines the multiple antennas of the UE into one or more antenna groups corresponding to the one or more virtual channels; and

    receiving second pilot signals transmitted by the UE based on the antenna combining information.

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