Patent ID: 8125942

Claim:
A method comprising: in a MIMO wireless communication system, detecting a plurality of received signal strength indicator values from a plurality of receiving circuits; determining if there is a significant difference between the plurality of received signal strength indicator values from the plurality of receiving circuits indicating that one or more of the plurality of receiving circuits is not connected to an antenna via performing one or more of: comparing a received signal strength indicator value with a received signal strength indicator value of one or more receiving circuits known to be connected to an antenna; and comparing a received signal strength indicator value with previously a previously measured reference value representative of a not connected state; and responsive to determining the significant difference: recognizing that a receiving circuit from which a smaller received signal strength indicator value has been detected is not connected to at least one of the plurality of antennas; and setting to operation stop the receiving circuit recognized to be not connected to at least one of a plurality of antennas.