毫米波无线通信系统混合波束成形综述  

Overview of Hybrid Beamforming for Millimeter Wave Systems

作　　者：束锋[1,2,3] 杨淑萍[1] 许正文 秦耀璐 王进[1] 周小波[1] 刘婷婷[1] Shu Feng Yang Shuping Xu Zhengwen Qin Yaolu Wang Jin Zhou Xiaobo Liu Tingting(School of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China Na- tional Key Laboratory of Electromagnetic Environment, China Research Institute of Radiowave Propagation, Qingdao, 266107, China National Mobile Communications Research Laboratory, Southeast University, Nanjing, 210096, China)

机构地区：[1]南京理工大学电子工程与光电技术学院,南京210094 [2]电子科技集团公司第二十二研究所电波环境特性及模块化技术国防科技重点实验室,青岛266107 [3]东南大学移动通信国家重点实验室,南京210096

出　　处：《数据采集与处理》2017年第3期454-462,共9页Journal of Data Acquisition and Processing

基　　金：国家自然科学基金(61472190)资助项目

摘　　要：毫米波频段拥有大量未充分使用的频谱资源,能有效缓解低频段频谱拥塞,并且由于毫米波波长较短,能极大地减小大规模天线系统的物理尺寸,使得毫米波通信成为5G无线通信系统潜在的关键技术之一。考虑到毫米波传播路径损耗严重,毫米波系统需采用波束成形技术改善传输质量。在毫米波大规模多输入多输出(Multiple-input multiple-out,MIMO)系统中,由于数字波束成形高功耗、高成本问题,混合数模波束成形成为重要的替代方案。本文首先阐述了毫米波混合波束成形的研究现状,而后给出了系统模型,最后介绍了信道估计、码本设计和低复杂度设计等混合波束成形的关键技术。The large underutilized spectrum of Millimeter wave （mmWave） can efficiently alleviate the spectrum shortage at lower frequency bands, and the physical size of large-scale antennas systems can be greatly reduced due to the shorter wavelength at mmWave frequencies, which enables mmWave commu- nication to be one of the potentially crucial techniques for 5 G wireless communication systems. Consider- ing the severe path loss of mmWave frequencies, beamforming needs to be utilized in an mmWave system for improving the transmission quality. Due to the high power consumption and high cost of fully digital beamforming methods in mmWave massive MIMO systems, hybrid digital and analog beamforming be- come an important alternative scheme. Here, we first introduce the current research state of hybrid beamforming schemes for mmWave MIMO systems. Then the system model is built. Finally, the crucial technologies of hybrid beamforming, i. e. , channel estimation, codebook design and low-complexity de- sign are described.

关 键 词：毫米波系统 大规模天线系统 信道估计 混合波束成形 

分 类 号：TN929.5[电子电信—通信与信息系统]