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System and method for discrete gain control in hybrid MIMO RF beamforming for multi layer MIMO base station

  • US 8,837,650 B2
  • Filed: 11/22/2013
  • Issued: 09/16/2014
  • Est. Priority Date: 05/29/2012
  • Status: Expired due to Fees
First Claim
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1. A system comprising:

  • a multiple-input-multiple-output (MIMO) receiving system;

    a plurality of beamforming tunable receiving antennas configured to receive a plurality of transmitted layers;

    a MIMO baseband module; and

    a control module configured to select for the beamforming antennas a single set of discrete weights for tuning said antennas for all of the transmitted layers,wherein said selection is carried out based on a predefined quality metric, being an extended Maximal Ratio Combining (MRC) metric, measured by the MIMO baseband module for each antenna, and using average of various signals measured separately for each antenna to determine gain or attenuation independently of phase selection.

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