Patent ID: 8243840

Claim:
A method for transmitting/receiving data in a spatial multiplexing Multiple Input Multiple Output (MIMO) communication system, the method comprising: calculating a processing matrix of a transmission unit for transmitting data, a processing matrix of a reception unit for receiving the data, a channel matrix formed by a plurality of transmission antennas and a plurality of reception antennas, and a parameter of the transmission data as a weight of the transmitter found through Zero-Forcing at a receiver, when the data to be transmitted to the plurality of reception antennas via the plurality of transmission antennas is generated; determining a minimum value of a Minimum Mean Square Error (MMSE) according to a weighted symbol of the transmission data, the calculated processing matrix of the transmission unit, the calculated processing matrix of the reception unit, the channel matrix, the parameter of the transmission data, and Gaussian noise; and transmitting/receiving the data using an MMSE multiplexing scheme based on the determined minimum MMSE value; wherein the MMSE multiplexing scheme is used for the spatial multiplexing MIMO communication system; and wherein the processing matrix of the transmission unit and the processing matrix of the reception unit are calculated according to the channel matrix formed by the plurality of transmission antennas and the plurality of reception antennas.