毫米波MIMO系统中基于射频链路选择的高能效混合预编码设计

doi:10.7523/j.issn.2095-6134.2018.05.017

中国科学院大学学报 ›› 2018, Vol. 35 ›› Issue (5): 696-703.DOI: 10.7523/j.issn.2095-6134.2018.05.017

毫米波MIMO系统中基于射频链路选择的高能效混合预编码设计

孙霁含, 邱玲

中国科学技术大学中国科学院无线光电通信重点实验室, 合肥 230027

收稿日期:2017-06-23 修回日期:2017-10-23 发布日期:2018-09-15
通讯作者: 邱玲
基金资助:
国家自然科学基金（61672484）资助

Energy-efficient hybrid precoding design based on RF chains selection for millimeter wave MIMO systems

SUN Jihan, QIU Ling

Key Laboratory of Wireless-Optical Communications of Chinese Academy of Sciences, University of Science and Technology of China, Hefei 230027, China

Received:2017-06-23 Revised:2017-10-23 Published:2018-09-15

摘要/Abstract

摘要： 为减少射频链路开销的同时满足系统高容量需求，提出使用有限射频链路的毫米波混合数模预编码，以实现硬件成本和系统性能的折中。在多用户毫米波MIMO系统下，首次提出基于射频链路选择的高能效混合预编码算法。首先利用预设的模拟预编码码本将原三元耦合变量联合优化问题转变为稀疏数字预编码优化问题。由于问题非凸非线性，接着利用顺序凸近似与分数规划理论，设计一种迭代求解算法。仿真结果表明所提算法在能效上十分逼近于穷举法并显著优于其他算法。

关键词: 毫米波MIMO通信, 混合预编码, 射频链路选择, 能量效率

Abstract: In order to reduce the radio frequency (RF) chains cost and satisfy the high capacity demand for communication systems, millimeter wave hybrid precoding with limited RF chains is proposed to make a tradeoff between hardware cost and system performance. In this work, we study the energy-efficient hybrid precoding design problem based on RF chains selection for a millimeter wave multi-user multiple-input multiple-output (MIMO) system. First, we use the predesigned analog precoding codebook to reformulate the original problem as a sparse digital precoding problem. Then we solve it iteratively using successive convex approximation (SCA) method combined with fractional programming method. The simulation results show that our proposed algorithm gives the performance very close to that of the exhaustive search and better than those of the other existed algorithms.

Key words: millimeter wave MIMO communications, hybrid precoding, radio frequency chains selection, energy efficiency

中图分类号:

TN919

孙霁含, 邱玲. 毫米波MIMO系统中基于射频链路选择的高能效混合预编码设计[J]. 中国科学院大学学报, 2018, 35(5): 696-703.

SUN Jihan, QIU Ling. Energy-efficient hybrid precoding design based on RF chains selection for millimeter wave MIMO systems[J]. , 2018, 35(5): 696-703.

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毫米波MIMO系统中基于射频链路选择的高能效混合预编码设计

Energy-efficient hybrid precoding design based on RF chains selection for millimeter wave MIMO systems

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