National Science Library, Chinese Academy of Sciences
  登录 机构网站 ENGLISH
您当前的位置是:首页->详细浏览

期刊名称: IEEE ACCESS
Volume:4    Page:247-267
ISSN:2169-3536

Hybrid MIMO Architectures for Millimeter Wave Communications: Phase Shifters or Switches?期刊论文

作者: Mendez-Rial R Rusu C Gonzalez-Prelcic N Alkhateeb A Heath RW
DOI:10.1109/ACCESS.2015.251426I

服务链接:
页码: 247-267
被引频次: 177
出版者: IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
期刊名称: IEEE ACCESS
ISSN: 2169-3536
语言: English
摘要: Hybrid analog/digital multiple-input multiple-output architectures were recently proposed as an alternative for fully digital-precoding in millimeter wave wireless communication systems. This is motivated by the possible reduction in the number of RF chains and analog-to-digital converters. In these architectures, the analog processing network is usually based on variable phase shifters. In this paper, we propose hybrid architectures based on switching networks to reduce the complexity and the power consumption of the structures based on phase shifters. We define a power consumption model and use it to evaluate the energy efficiency of both structures. To estimate the complete MIMO channel, we propose an open-loop compressive channel estimation technique that is independent of the hardware used in the analog processing stage. We analyze the performance of the new estimation algorithm for hybrid architectures based on phase shifters and switches. Using the estimate, we develop two algorithms for the design of the hybrid combiner based on switches and analyze the achieved spectral efficiency. Finally, we study the tradeoffs between power consumption, hardware complexity, and spectral efficiency for hybrid architectures based on phase shifting networks and switching networks. Numerical results show that architectures based on switches obtain equal or better channel estimation performance to that obtained using phase shifters, while reducing hardware complexity and power consumption. For equal power consumption, all the hybrid architectures provide similar spectral efficiencies.
相关主题: hybrid architecture, NM CMOS, ORTHOGONAL MATCHING PURSUIT, ANALOG, PERFORMANCE, SIGNAL RECOVERY, switches, COMPUTER SCIENCE, INFORMATION SYSTEMS, NETWORKS, precoding, TELECOMMUNICATIONS, ENGINEERING, ELECTRICAL & ELECTRONIC, channel estimation, SYSTEMS, SELECTION, TECHNOLOGY, Millimeter wave,

相关文献推荐:

问图书管理员更多图书管理员

学科咨询馆员
学科馆员

电话:
邮件:
问图书馆员

图标说明

在线获取原文 原文传递 详细信息 图书在架状态 图书馆际互借 问图书馆员

常见问题

图书馆开放时间 图书馆位置 借阅要求 您在使用中发现的任何错误,都可以向我们 【报告错误】,非常感谢!

作者信息:×