The millimeter-wave array has many antenna elements and the beamforming algorithm in the frequency selective channel generally has a high complexity.In this paper,a low complexity iterative beamforming method in the frequency selective channel for the millimeter wave phased array is proposed.The method first obtains the beamforming vector which is adapted to the millimeter-wave phase array at one end of the communication,and then obtains the beamforming vector at the other end in the same way,and iterates i...