Patent ID: 7991412

Claim:
A wireless communication device that is provided with a plurality of antennas and has multiple-input, multiple-output (MIMO) functions that receive a plurality of spatially multiplexed signal sets, perform an inverse matrix computation using SN ratios of the plurality of the signal sets, based on a transfer function of a transmission path of the plurality of the signal sets, decode a first encoded signal in which is encoded the plurality of the signal sets on which the inverse matrix computation was performed, and output a decoded signal, the wireless communication device comprising: an SN ratio estimation portion that estimates the SN ratios of the plurality of the signal sets that are used in performing the inverse matrix computation; an encoder that generates a second encoded signal by encoding the decoded signal; a transfer function update portion that updates the transfer function based on the second encoded signal that is generated by the encoder; and a control portion that, in a case where one of the SN ratio that is estimated by the SN ratio estimation portion and the difference between the first encoded signal and the second encoded signal does not meet a specified standard, shifts the state of the wireless communication device to a reduced power consumption state in which the amount of electric power that is consumed is reduced.