A kind of signal transmitting method and device

The invention discloses a kind of signal transmitting method and devices, for in the full-duplex wireless communication systems that millimere-wave band is carrier frequency, the transmitting signal for eliminating transmitting antenna array receives the interference of signal to receiving antenna array in same transceiver, eliminates the self-interference between transmitting antenna array and receiving antenna array.The signal transmitting method, comprising: determine the position of receiving antenna array；Signal is emitted using beamforming technique by transmitting antenna array, wherein use beamforming technique when emitting signal using the position of the receiving antenna array as null position, and the transmitting antenna array and the receiving antenna array are located in same transceiver.