Low-Complexity OFDM-Based Hybrid Precoding for Multiuser Massive MIMO Systems

摘要

A low-complexity fully connected hybrid precoding design is proposed for multiuser massive MIMO systems over frequency-selective fading channels. Digital precoding and analog precoding are adaptively designed based on instantaneous channel state information (CSI) and statistical CSI to maximize transmission efficiency. Furthermore, a dynamic partially connected structure and a novel beamforming algorithm are proposed to reduce the power consumption. Our simulation shows a satisfying performance compared with other proposed schemes.