A transmission device including a plurality of transmission antennas (b01, b02, b0N) and configured to spatially multiplex and transmit a plurality of signals addressed to a plurality of reception devices (MT1, MT2), the transmission device comprising: a multiplexed signal generator (2b, 3b) configured to generate interference subtracted signals each of which is generated by subtracting a corresponding interference signal respectively from each of the plurality of signals addressed to the plurality of reception devices (MT1, MT2), and to generate a transmission signal by multiplexing the interference subtracted signals addressed to the plurality of reception devices (MT1, MT2); and a wireless transmitter (b151, b152, b15N) configured to transmit the transmission signal, characterized in that the multiplexed signal generator (2b, 3b) is configured to determine whether to set each one of the plurality of reception devices (MT1, MT2) to a first reception device (MT1, MT2) or a second reception device (MT1, MT2), a power suppression process of suppressing a power of the interference subtracted signal being performed for the first reception device (MT1, MT2), the power suppression process being not performed for the second reception device (MT1, MT2), generate and output transmission mode information for identifying each of the plurality of reception devices (MT1, MT2) as the first reception device (MT1, MT2) or the second reception device (MT1, MT2), generate a first signal by suppressing the power of the interference subtracted signal addressed to the first reception device (MT1, MT2) and a second signal by not suppressing the power of the interference subtracted signal addressed to the second reception device (MT1, MT2), and generate the transmission signal by multiplexing the first signal and the second signal. a multiplexed signal generator (2b, 3b) configured to generate interference subtracted signals each of which is generated by subtracting a corresponding interference signal respectively from each of the plurality of signals addressed to the plurality of reception devices (MT1, MT2), and to generate a transmission signal by multiplexing the interference subtracted signals addressed to the plurality of reception devices (MT1, MT2); and a wireless transmitter (b151, b152, b15N) configured to transmit the transmission signal, characterized in that the multiplexed signal generator (2b, 3b) is configured to determine whether to set each one of the plurality of reception devices (MT1, MT2) to a first reception device (MT1, MT2) or a second reception device (MT1, MT2), a power suppression process of suppressing a power of the interference subtracted signal being performed for the first reception device (MT1, MT2), the power suppression process being not performed for the second reception device (MT1, MT2), generate and output transmission mode information for identifying each of the plurality of reception devices (MT1, MT2) as the first reception device (MT1, MT2) or the second reception device (MT1, MT2), generate a first signal by suppressing the power of the interference subtracted signal addressed to the first reception device (MT1, MT2) and a second signal by not suppressing the power of the interference subtracted signal addressed to the second reception device (MT1, MT2), and generate the transmission signal by multiplexing the first signal and the second signal. determine whether to set each one of the plurality of reception devices (MT1, MT2) to a first reception device (MT1, MT2) or a second reception device (MT1, MT2), a power suppression process of suppressing a power of the interference subtracted signal being performed for the first reception device (MT1, MT2), the power suppression process being not performed for the second reception device (MT1, MT2), generate and output transmission mode information for identifying each of the plurality of reception devices (MT1, MT2) as the first reception device (MT1, MT2) or the second reception device (MT1, MT2), generate a first signal by suppressing the power of the interference subtracted signal addressed to the first reception device (MT1, MT2) and a second signal by not suppressing the power of the interference subtracted signal addressed to the second reception device (MT1, MT2), and generate the transmission signal by multiplexing the first signal and the second signal.