通信学报 ›› 2021, Vol. 42 ›› Issue (5): 111-121.doi: 10.11959/j.issn.1000-436x.2021114

• 学术论文 • 上一篇    

基于连续干扰消除和交替方向乘子法的混合预编码设计

赵雄文, 刘瑶, 张钰, 耿绥燕, 秦鹏, 周振宇   

  1. 华北电力大学电气与电子工程学院,北京 102206
  • 修回日期:2021-03-01 出版日期:2021-05-01 发布日期:2021-05-01
  • 作者简介:赵雄文(1964- ),男,陕西清涧人,博士,华北电力大学教授、博士生导师,主要研究方向为无线通信与电力系统通信等
    刘瑶(1997- ),女,天津人,华北电力大学硕士生,主要研究方向为毫米波Massive MIMO预编码技术
    张钰(1995- ),女,安徽六安人,华北电力大学博士生,主要研究方向为5G毫米波通信中的预编码技术、非正交多址接入技术等
    耿绥燕(1966- ), 女,陕西绥德人,华北电力大学副教授,主要研究方向为短距离无线通信技术等
    秦鹏(1987- ),男,河南商丘人,博士,华北电力大学副教授,主要研究方向为网络通信技术等
    周振宇(1983- ),男,河北张家口人,博士,华北电力大学教授、博士生导师,主要研究方向为无线通信网络与新技术、物联网与现代传感技术、能源互联网信息通信技术等
  • 基金资助:
    国家自然科学基金资助项目(61931001);国家自然科学基金资助项目(61771194)

Design of hybrid precoding with successive interference cancellation and alternating direction method of multipliers

Xiongwen ZHAO, Yao LIU, Yu ZHANG, Suiyan GENG, Peng QIN, Zhenyu ZHOU   

  1. School of Electrical and Electronic Engineering, North China Electric Power University, Beijing 102206, China
  • Revised:2021-03-01 Online:2021-05-01 Published:2021-05-01
  • Supported by:
    The National Natural Science Foundation of China(61931001);The National Natural Science Foundation of China(61771194)

摘要:

为解决毫米波多天线系统大量移相器(PS)引起的高功耗问题,设计了一种新型动态连接结构,以最大化频谱效率为目标提出了连续干扰消除(SIC)和连续干扰消除-交替方向乘子(SIC-ADMM)2种混合预编码方案。SIC将总速率问题分解为不同射频链路的子速率问题,先对模拟部分进行逐次迭代,转化为低维度等效矩阵后再对数字部分进行求解。SIC-ADMM 是对 SIC 的改进,通过研究多变量子速率问题实现算法的快速收敛,并能有效地降低计算复杂度。仿真结果表明,所提方案在频谱效率和能量效率方面优于现有典型预编码方案,且更适用于大规模天线系统。此外,当关闭一定比例 PS 后,所提方案能够通过牺牲少量频谱效率换取能量效率的大幅提升。

关键词: 大规模天线系统, 混合预编码, 移相器, 频谱效率, 能量效率

Abstract:

To solve the problem of large power consumption caused by a large number of phase shifter (PS) in millimeter wave multi-antenna systems, a new type of dynamic connection structure was designed.With the goal of maximizing spectrum efficiency, two hybrid precoding schemes, successive interference cancellation (SIC) and successive interference cancellation-alternating direction multiplier (SIC-ADMM), were proposed.In SIC scheme, the sum-rate problem was decomposed into multiple sub-rate problems of different radio frequency links, the analog part was solved by iteration, and the digital part was solved by a low-dimensional equivalent matrix.Based on SIC scheme, an improved SIC-ADMM scheme was further proposed by studying the multi-variable sub-rate problem to achieve rapid convergence and reduce computational complexity effectively.The simulation results show that the proposed schemes have good spectrum and energy efficiencies by comparison with the existing schemes, and are more suitable for large-scale antenna systems.In addition, when a certain percentage of PS is turned off, the proposed scheme can greatly improve energy efficiency by sacrificing a small amount of spectrum efficiency.

Key words: massive antennas system, hybrid precoding, phase shifter, spectrum efficiency, energy efficiency

中图分类号: 

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