An Efficient Hybrid Precoding Scheme for mmWave Massive MIMO Systems

With the explosive increase of data traffic, existing communication network fails to satisfy enormous data and high-rate communication scenarios. As alternative techniques for the next generation communication networks (5G), millimeter wave (mmWave) and massive multiple-input multiple-output (MIMO) have aroused great interest in the research community. In order to improve the hybrid precoding performance based on mmWave massive MIMO, in this paper, we propose an efficient scheme for hybrid precoding with near-optimal performance and low complexity. Here, by dividing the system data rate optimization problem into each sub-antenna optimization, it is observed that we can simply search a precoding vector close to the optimal solution. In addition, simulation results demonstrate that the proposed strategy is a near-optimal method for hybrid precoding based on the mmWave massive MIMO system, and the robustness of the proposed mean is verified among extensive simulation.