毫米波MIMO系统中迭代最小均方误差混合波束成形算法

doi:10.11959/j.issn.1000-0801.2017205

电信科学 ›› 2017, Vol. 33 ›› Issue (8): 77-84.doi: 10.11959/j.issn.1000-0801.2017205

毫米波MIMO系统中迭代最小均方误差混合波束成形算法

申敏^1,²,徐浩¹,何云²,周朋光¹

¹ 重庆邮电大学通信与信息工程学院，重庆 400065
² 重庆邮电大学新一代宽带移动通信重点实验室，重庆 400065

修回日期:2017-06-27 出版日期:2017-08-01 发布日期:2017-08-25
作者简介:申敏（1963-），女，重庆邮电大学通信与信息工程学院教授、博士生导师，主要研究方向为新一代宽带移动通信系统、通信核心芯片、协议与系统应用技术。|徐浩（1992-），男，重庆邮电大学通信与信息工程学院硕士生，主要研究方向为毫米波MIMO系统中混合波束成形技术。|何云（1979-），女，重庆邮电大学新一代宽带移动通信重点实验室工程师，主要研究方向为新一代宽带移动通信系统。|周朋光（1992-），男，重庆邮电大学通信与信息工程学院硕士生，主要研究方向为超密集网络技术。
基金资助:
国家科技重大专项基金资助项目(2016ZX03002010-003)

Alternating minimum mean square error hybrid beamforming algorithm in mmWave MIMO system

Min SHEN^1,²,Hao XU¹,Yun HE²,Pengguang ZHOU¹

¹ School of Communication and Information Engineering,Chongqing University of Posts and Telecommunications,Chongqing 400065,China
² Key Lab of New Generation Broadband Mobile Communication,Chongqing University of Posts and Telecommunications,Chongqing 400065,China

Revised:2017-06-27 Online:2017-08-01 Published:2017-08-25
Supported by:
The National Science and Technology Major Project of China(2016ZX03002010-003)

摘要/Abstract

摘要：

混合波束成形结构能有效解决毫米波MIMO系统中射频链路受限的问题，但要设计性能较优的混合波束成形算法仍然存在困难。为了实现更高的频谱利用率，提出了一种性能较优的迭代最小均方误差（Alt-MMSE）混合波束成形算法。该算法利用数字矩阵的正交特性，首先进行初始数字矩阵设计，然后通过最小化发送信号与接收信号的均方误差不断迭代更新数字矩阵，在每一次迭代过程中，通过更新后的数字矩阵得到模拟矩阵的相位信息。仿真结果表明，与OMP混合波束成形算法和基于矩阵分解的混合处理方案相比，该算法具有更优的性能且更接近于纯数字波束成形。

关键词: 毫米波MIMO, 最小均方误差, 混合波束成形, 射频链路

Abstract:

The two-stage hybrid beamforming architecture can solve the problem of limited number of RF chains effectively.However,it is still difficult to design a hybrid beamforming algorithm with better performance.In order to achieve higher spectral efficiency,an alternating minimum mean square error (Alt-MMSE) hybrid beamforming algorithm was proposed.Firstly,the initial digital matrix by using the orthogonal properties of the digital matrix was designed,and then the digital matrix by minimizing the square error of the transmitted signal and the received signal was updated.During each iteration,the phase of the analog matrix could be obtained from the updated digital matrix and the optimal fully digital matrix.The simulation results show that the proposed algorithm has better performance and is closer to fully digital beamforming than OMP hybrid beamforming algorithm and hybrid processing scheme based on matrix decomposition .

Key words: mmWave MIMO, minimum mean square error, hybrid beamforming, RF chain

中图分类号:

TN929.5

申敏,徐浩,何云,周朋光. 毫米波MIMO系统中迭代最小均方误差混合波束成形算法[J]. 电信科学, 2017, 33(8): 77-84.

Min SHEN,Hao XU,Yun HE,Pengguang ZHOU. Alternating minimum mean square error hybrid beamforming algorithm in mmWave MIMO system[J]. Telecommunications Science, 2017, 33(8): 77-84.

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仿真参数	参数内容
发射天线N_t/根	256
接收天线N_r/根	64
天线排布方式	均匀平面阵列
天线间距d /mm	λ/2
群簇数N_cl/个	5
散射体数N_ray/簇	10
AOA，AOD	拉普拉斯分布

毫米波MIMO系统中迭代最小均方误差混合波束成形算法

Alternating minimum mean square error hybrid beamforming algorithm in mmWave MIMO system

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