降低多用户MIMO系统PAPR的广义SLM算法

doi:10.12305/j.issn.1001-506X.2021.06.26

系统工程与电子技术 ›› 2021, Vol. 43 ›› Issue (6): 1673-1678.doi: 10.12305/j.issn.1001-506X.2021.06.26

降低多用户MIMO系统PAPR的广义SLM算法

韩康祺^1,², 钱骅², 裴旭明^1,², 康凯^2,^3,*

1. 中国科学院大学微电子学院, 北京 100049
2. 中国科学院上海高等研究院, 上海 201210
3. 中国科学院无线传感器网络与通信重点实验室, 上海 200050

收稿日期:2020-05-18 出版日期:2021-05-21 发布日期:2021-05-28
通讯作者: 康凯
作者简介:韩康祺(1995—), 女, 博士研究生, 主要研究方向为大规模MIMO、毫米波通信|钱骅(1976—), 男, 研究员, 博士研究生导师, 博士, 主要研究方向为无线通信、非线性信号处理、大数据信号处理|裴旭明(1984—), 男, 博士研究生, 主要研究方向为长期演进技术、5G通信系统|康凯(1977—), 男, 高级工程师, 博士, 主要研究方向为长期演进技术、5G通信系统
基金资助:
国家自然科学基金(61671436)

Generalized SLM algorithm applied to reduce PAPR of multi-user MIMO systems

Kangqi HAN^1,², Hua QIAN², Xuming PEI^1,², Kai KANG^2,^3,*

1. School of Microelectronics, University of Chinese Academy of Sciences, Beijing 100049, China
2. Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
3. Key Laboratory of Wireless Sensor Network & Communication, Chinese Academy of Sciences, Shanghai 200050, China

Received:2020-05-18 Online:2021-05-21 Published:2021-05-28
Contact: Kai KANG

摘要/Abstract

摘要：

针对在多用户多输入多输出(multi-user multiple input multiple output, MU-MIMO)系统中, 选择性映射(selected mapping, SLM)算法不适用于分布式用户, 并且边信息无法在用户之间共享的问题，提出一种适用于MU-MIMO系统的广义SLM算法。该算法通过改变相位旋转的作用对象, 将相位旋转进行前置, 来解决SLM引入带来的一系列问题。同时, 分析了在采用等增益传输波束成形的系统中, 使用广义SLM算法时系统的高峰均功率比(peak to average power ratio, PAPR)性能, 验证了该算法的有效性。仿真结果也表明了该算法可以有效降低MU-MIMO系统的PAPR。

关键词: 多用户多输入多输出, 正交频分复用, 峰均功率比, 选择性映射

Abstract:

Aiming at the problem that the selective mapping (SLM) algorithm is not suitable for distributed users and the side information cannot be shared among users in multi-user multiple input multiple output (MU-MIMO) system, a generalized SLM algorithm for MU-MIMO system is proposed. The proposed algorithm solves a series of problems caused by the introduction of SLM by changing the object of phase rotation and preposing the phase rotation. At the same time, the peak to average power ratio (PAPR) performance of the system using the generalized SLM algorithm in the system with equal gain transmission beamforming is analyzed, and the effectiveness of the algorithm is verified. Simulation results also show that the algorithm can effectively reduce the PAPR of MU-MIMO system.

Key words: multi-user multiple input multiple output (MU-MIMO), orthogonal frequency division multiplexing (OFDM), peak to average power ratio (PAPR), selected mapping (SLM)

中图分类号:

TN92

韩康祺, 钱骅, 裴旭明, 康凯. 降低多用户MIMO系统PAPR的广义SLM算法[J]. 系统工程与电子技术, 2021, 43(6): 1673-1678.

Kangqi HAN, Hua QIAN, Xuming PEI, Kai KANG. Generalized SLM algorithm applied to reduce PAPR of multi-user MIMO systems[J]. Systems Engineering and Electronics, 2021, 43(6): 1673-1678.

图/表 4

参考文献 24

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降低多用户MIMO系统PAPR的广义SLM算法

Generalized SLM algorithm applied to reduce PAPR of multi-user MIMO systems

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