混合智能反射表面结构辅助的毫米波通信信道估计

doi:10.11959/j.issn.1000-436x.2021197

通信学报 ›› 2021, Vol. 42 ›› Issue (10): 189-196.doi: 10.11959/j.issn.1000-436x.2021197

混合智能反射表面结构辅助的毫米波通信信道估计

傅友华¹^,², 陈栋¹^,²

¹ 南京邮电大学电子与光学工程学院微电子学院，江苏南京 210023
² 射频集成与微组装技术国家地方联合工程实验室，江苏南京 210023

修回日期:2021-09-23 出版日期:2021-10-25 发布日期:2021-10-01
作者简介:傅友华（1978- ），女，贵州遵义人，博士，南京邮电大学副教授，主要研究方向为MIMO无线通信、中继协作通信等
陈栋（1996- ），男，江苏盐城人，南京邮电大学硕士生，主要研究方向为MIMO无线通信
基金资助:
国家自然科学基金资助项目(61771257)

Channel estimation for hybrid intelligent reflecting surface structure assisted mmWave communications

Youhua FU¹^,², Dong CHEN¹^,²

¹ College of Electronic and Optical Engineering ＆College of Microelectronics, Nanjing University of Posts and Telecommunications, Nanjing 210023, China
² National and Local Joint Engineering Laboratory of RF Integration and Micro-Assembly Technology, Nanjing 210023, China

Revised:2021-09-23 Online:2021-10-25 Published:2021-10-01
Supported by:
The National Natural Science Foundation of China(61771257)

摘要/Abstract

摘要：

为应对毫米波通信加入智能反射表面（IRS）进行辅助通信导致系统变复杂难以获得信道状态信息（CSI）这一挑战，采用了混合智能反射表面结构，即IRS由大量无源元件和有限的射频（RF）链构成，其中有限的RF链用来估计基站/终端和IRS之间的信道。基于该结构，提出一种信道估计方案。该方案根据有限的RF链，首先使用一种改进的多信号分类算法对信道的离开角和到达角同时进行估计，然后提出一种复数并联深度神经网络对路径增益进行估计。通过将所提方案和其他方法进行仿真比较，证明了所提方案的优越性。

关键词: 混合智能反射表面, 毫米波, 信道估计, 多信号分类算法, 深度神经网络

Abstract:

When adding intelligent reflecting surface (IRS) for assist communication in millimeter wave communication, the system becomes complicated and difficult to obtain channel state information (CSI).To solve these challenges, a hybrid intelligent reflecting surface structure was adopted, that is, the IRS was composed of a large number of passive elements and the limited radio frequency (RF) chains, where the limited RF chains were used to estimate the channel between the base station/terminal and the IRS.Based on the structure, a channel estimation scheme was proposed, which was based on the limited RF chains.First, an improved multiple signal classification algorithm was used to estimate the departure angle and arrival angle of the channel at the same time, and then a complex parallel deep neural network was proposed to estimate the path gain.Through simulation and comparison between the proposed scheme and other methods, the superiority of the proposed scheme is proved.

Key words: hybrid intelligent reflecting surface, millimeter wave, channel estimation, multiple signal classification algo-rithm, deep neural network

中图分类号:

TN928

傅友华, 陈栋. 混合智能反射表面结构辅助的毫米波通信信道估计[J]. 通信学报, 2021, 42(10): 189-196.

Youhua FU, Dong CHEN. Channel estimation for hybrid intelligent reflecting surface structure assisted mmWave communications[J]. Journal on Communications, 2021, 42(10): 189-196.

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混合智能反射表面结构辅助的毫米波通信信道估计

Channel estimation for hybrid intelligent reflecting surface structure assisted mmWave communications

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