Patent ID: 7787556

Claim:
A method for signal detection in a digital wireless communication system with multiple antennas, wherein at least two transmitted signals are detected in a Multiple Input Multiple Output system, the transmitted signals are transmitted from distinct transmitting antennas at a transmitting end and arrive at a receiving end after passing through a channel, wherein, the method comprises the steps of: receiving the transmitted signals from at least two receiving antennas at the receiving end, and acquiring a channel matrix H composed of channel coefficients between the transmitting and receiving antennas; computing a factor matrix of an estimate error covariance matrix for a part of all the transmitted signals by using the channel matrix H, and recursively obtaining a factor matrix of an estimate error covariance matrix for a number of transmitted signals by using the channel matrix H and the computed factor matrix of the estimate error covariance matrix for the part of transmitted signals, wherein the number of transmitted signals include the part of transmitted signals and are of a greater number than the part of transmitted signals; detecting the number of transmitted signals, which include the part of transmitted signals and are of a greater number than the part of transmitted signals, by using the obtained factor matrix.