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Calibration of transmit and receive chains in a MIMO communication system

  • US 20050227628A1
  • Filed: 04/02/2004
  • Published: 10/13/2005
  • Est. Priority Date: 04/02/2004
  • Status: Active Grant
First Claim
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1. A method of calibrating transmitter units and receiver units at a wireless entity in a multiple-input multiple-output (MIMO) communication system, comprising:

  • obtaining a plurality of first overall gains for a first receiver unit and a plurality of transmitter units, one first overall gain for each transmitter unit, each first overall gain indicative of a combined response for the first receiver unit and the associated transmitter unit, wherein the first receiver unit is one of a plurality of receiver units;

    obtaining a plurality of second overall gains for a first transmitter unit and the plurality of receiver units, one second overall gain for each receiver unit, each second overall gain indicative of a combined response for the first transmitter unit and the associated receiver unit, wherein the first transmitter unit is one of the plurality of transmitter units;

    determining a gain of each of the plurality of transmitter units based on the plurality of first overall gains; and

    determining a gain of each of the plurality of receiver units based on the plurality of second overall gains.

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