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With the densification of Internet of Things (IoT), the IoT application will benefit a lot from a wide range of unused bandwidths Millimeter wave (mm wave) frequencies. Through the general theoretical background, this paper puts forward several conventional beamforming algorithms in the mm wave environment, and analyzes the feasibility of these algorithms based on resolution by simulation. It is found that considering the position deviation of the virtual antenna array in M2M communication, the main lobe of the CBF, MVDR, LMS, MUSIC algorithm obtains the maximum value in the DOA, while the beam pattern of the CBF, MVDR, LMS algorithms have a large deviation from the directions except DOA. The beam pattern of MUSIC algorithm is almost the same as the expected response of the uniform array. The simulation results show that MUSIC algorithm can be used in the mm wave environment of high-performance IoT communication.

The Feasibility of Conventional Beamforming Algorithm Based on Resolution for Internet of Things in Millimeter Wave Environment