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.

中文翻译：

---

用于多用户大规模 MIMO 系统的低复杂度基于 OFDM 的混合预编码

针对频率选择性衰落信道上的多用户大规模 MIMO 系统，提出了一种低复杂度的全连接混合预编码设计。数字预编码和模拟预编码基于瞬时信道状态信息 (CSI) 和统计 CSI 自适应设计，以最大限度地提高传输效率。此外，提出了一种动态部分连接结构和一种新颖的波束成形算法来降低功耗。与其他提出的方案相比，我们的模拟显示出令人满意的性能。