Patent ID: 8520642

Claim:
A wireless communication system for carrying out a spatial multiplexing communication between a transmitter having a plurality of antennas, and a receiver having a plurality of antennas, the wireless communication system comprising: channel information matrix acquiring means for acquiring a channel information matrix having transmission functions of the pairs of antennas between the sender side and the receiver side as elements; weighting factor matrix arithmetically operating means for obtaining a weighting factor matrix based on the channel information matrix thus acquired; weighting processing means for executing weighting processing based on the weighting factor matrix for transmission signals which are transmitted from the transmitter; transmission signal normalizing means for executing processing for normalizing each of the transmission signals weighted by the weighting processing means so that each of electric powers of the transmission signals from the respective transmitting antennas becomes a specified value; matrix product arithmetically operating means for multiplying each of the transmission signals which are transmitted from the transmitter by a predetermined matrix, thereby weighting each of the transmission signals; detecting means for detecting whether there is presence or absence of an abnormality in the processing executed by the weighting processing means or the normalizing means; and transmitting means for transmitting one of the transmitting signal for which the weighting processing means executes the weighting processing, and the transmission signal obtained by the matrix product arithmetically operating means from the transmitter to the receiver in accordance with the detection result obtained from the detecting means.