RADIO COMMUNICATION SYSTEM, RECEPTION DEVICE AND DEMODULATION METHOD

摘要

It is possible to provide a reception device capable of demodulating a signal with a very simple configuration. The reception device (1) includes N reception antennas (11-1 to 11-N). Each of the reception antennas (11-1 to 11-N) receives a signal. A channel coefficient estimation device (12) estimates a channel coefficient from the signal received by each of the reception antennas (11-1 to 11-N) and outputs it. A QR decomposition device (13) performs QR decomposition by inputting a channel matrix having channel coefficients as elements and outputs Q matrix and R matrix. A QH operation device (14) multiplies the complex conjugate transposed matrix of the Q matrix by inputting the Q matrix and the reception signal and outputs converted signal z. A transmission sequence estimation device (15) inputs the converted signal z and the R matrix and estimates the transmission sequence.